Live webinar: 10 SEP IRA Traps Every Self-Employed Business Owner Must Know — My Solo 401k Financial Daily Webinar Series [9/4/2026]

Key Takeaways

• Any part-time employee who earns just $800 in three of the last five years triggers mandatory SEP IRA contributions at the exact same percentage the owner contributes for themselves — there is no flexibility under the SEP IRA’s statutory rules.
• SEP IRAs are legally prohibited from offering participant loans, while a Solo 401(k) permits borrowing up to 50% of the account balance, capped at $50,000, tax-free and penalty-free.
• The Mega Backdoor Roth strategy — which can move up to $72,000 into a Roth account in 2026 — is completely unavailable in a SEP IRA because the plan can only accept employer contributions.
• A Solo 401(k) with automatic enrollment qualifies for a $1,500 SECURE Act tax credit ($500/year for three years) — a dollar-for-dollar tax reduction that SEP IRAs cannot access.
• SECURE 2.0 authorized Roth SEP IRAs on paper, but as of the webinar date, Fidelity, Schwab, and Vanguard do not support Roth SEP IRA contributions on their platforms.
• A Solo 401(k) owner only files the informational Form 5500-EZ when the plan exceeds $250,000 in assets — while a SEP IRA triggers annual IRS reporting via Form 5498 on every contribution made.

SEP IRA vs Solo 401(k): Why “Simpler” Can Cost You More

The SEP IRA vs Solo 401(k) question comes up constantly among self-employed entrepreneurs, and the SEP IRA sometimes wins the first impression on the illusion of simplicity.

The problem is that simplicity at setup does not mean simplicity at scale. When the SEP IRA vs Solo 401(k) comparison moves past the setup form and into real-world use — hiring even part-time help, planning a Roth conversion, investing in real estate, or needing emergency capital — the SEP IRA’s structural traps surface fast. Most owners don’t discover them until they’ve already cost money.

This SEP IRA vs Solo 401(k) analysis walks through all ten traps identified in the webinar — plus two bonus traps most advisors never mention — with a direct comparison on each point.

SEP IRA vs Solo 401(k): Key Terms Defined

SEP IRA (Simplified Employee Pension Individual Retirement Account)

An IRA-based retirement plan funded exclusively with employer contributions. The employer contributes the same percentage of compensation for every eligible employee, including the owner.

Solo 401(k) (also: One-Participant 401(k), Self-Employed 401(k))

A qualified retirement plan available to self-employed individuals with no full-time non-owner, non-spouse W-2 employees. Accepts employee elective deferrals, employer profit-sharing contributions, and voluntary after-tax contributions.

Pro Rata Rule

The IRS rule that aggregates all traditional, SEP, and SIMPLE IRA balances when calculating the taxable portion of a Roth IRA conversion. A large pre-tax IRA balance inflates the taxable fraction of any non-deductible (after-tax) contribution converted to Roth.

Mega Backdoor Roth

A two-step strategy available only in 401(k) plans that allow voluntary after-tax contributions: (1) contribute after-tax dollars up to the overall plan limit, then (2) convert those funds to a Roth account. The 2026 overall limit is $72,000. Not available in any IRA-type plan, including a SEP IRA.

Unrelated Debt-Financed Income (UDFI) Tax

A tax imposed on income generated inside an IRA (including a SEP IRA) that is attributable to acquisition indebtedness — i.e., a mortgage used to purchase real estate held inside the plan. Solo 401(k) plans are exempt from UDFI on qualifying real estate.

Rule of 55

An exception allowing penalty-free withdrawals from a qualified plan (but not an IRA) if the participant separates from service at age 55 or older. Applies to Solo 401(k) plans; never applies to a SEP IRA.

Trap 1: Accidental Employees — The $800 Time Bomb

The SEP IRA carries strict statutory inclusion rules with no flexibility. Any assistant or part-time employee who earns as little as $800 in three of the last five years qualifies for mandatory employer contributions at the exact same percentage the business owner contributes for themselves.

How a Solo 401(k) Handles This

A Solo 401(k) can legally exclude part-time W-2 employees who did not work 1,000 hours in a single year or 500 hours in two consecutive years. As long as there are no full-time, non-owner, non-spouse W-2 employees, there is no eligibility conflict — no surprise mandatory contributions as the business scales.

Trap 2: The Backdoor Roth IRA Pro Rata Problem

The SEP IRA sabotages the backdoor Roth IRA strategy. The IRS pro rata rule treats all traditional, SIMPLE, and SEP IRA balances as a single aggregate when calculating the taxable portion of any non-deductible IRA conversion to Roth.

How a Solo 401(k) Handles This

Qualified 401(k) plans — including the Solo 401(k) — are completely exempt from the IRA pro rata rule. Solo 401(k) assets are never aggregated with personal IRAs when calculating the taxable ratio of a backdoor Roth IRA conversion. Rolling millions of pre-tax dollars into a Solo 401(k) does not affect the backdoor Roth IRA analysis at all.

Trap 3: No Mega Backdoor Roth — Up to $72,000 in 2026 Off the Table

A SEP IRA can only accept employer contributions. Because a voluntary after-tax contribution is not an employer contribution, the Mega Backdoor Roth strategy is completely unavailable in a SEP IRA — period.

The Mega Backdoor Roth Solo 401(k) strategy works by making voluntary after-tax contributions — up to the overall plan limit — and then converting those funds to a Roth account. For 2026, a self-employed individual could contribute up to $72,000 as a voluntary after-tax Solo 401(k) contribution and immediately transfer that amount to a Roth Solo 401(k) or a Roth IRA, where it grows entirely tax-free.

Trap 4: The Real Estate UDFI Tax Trap

Self-directed retirement investors who want to use debt financing on real estate held inside an IRA face a specific and costly tax: the Unrelated Debt-Financed Income (UDFI) tax. The IRS imposes this tax on income generated inside an IRA — including a SEP IRA — that is attributable to a mortgage used to purchase the property.

Non-recourse financing is required when a retirement account invests in real estate with a loan. Non-recourse lenders typically require 50% down, shorter terms, and higher interest rates — but even when those conditions are met, a SEP IRA will still owe UDFI tax on the debt-financed portion of any income earned.

How a Solo 401(k) Handles This

A Solo 401(k) is exempt from UDFI when the real estate is held inside the plan and subject to acquisition indebtedness. This exemption gives the self-directed real estate investor a major structural advantage — the same leveraged real estate transaction produces no UDFI tax inside a Solo 401(k) while generating a significant tax liability inside a SEP IRA.

Trap 5: No Participant Loans — Your Money Is Locked Up

Under IRS rules, an IRA cannot legally extend a loan or line of credit to its owner. A SEP IRA is an IRA. That means a business owner with their retirement savings in a SEP IRA cannot borrow against those funds for any reason — business emergency, cash-flow gap, or investment opportunity.

How a Solo 401(k) Handles This

A Solo 401(k) that includes loan provisions permits the plan participant to borrow up to 50% of the account balance, capped at $50,000. The loan must be repaid with equal payments of principal and interest over a five-year term (or longer if used to purchase a primary residence). The interest rate is prime plus 1% or a CD rate plus 2%. The loan proceeds are tax-free and penalty-free as long as the repayment schedule is followed.

Trap 6: The Defined Benefit Plan Contribution Cap

Many high-earning solopreneurs combine a defined contribution plan with a defined benefit plan to maximize annual tax deductions. The trap for SEP IRA owners: if they want to preserve the ability to maximize contributions to a defined benefit plan, they must cap their SEP IRA employer contributions at no more than 6% of compensation.

Normally, a self-employed individual can contribute 20–25% of compensation as an employer contribution. But pairing a SEP IRA with a defined benefit plan forces that 6% ceiling — potentially leaving hundreds of thousands of dollars in deferred compensation out of the defined benefit plan.

How a Solo 401(k) Handles This

A Solo 401(k) owner facing the same 6% employer-contribution ceiling can still fill additional contribution buckets: the employee elective deferral bucket and the voluntary after-tax bucket. In 2026, the overall limit is $72,000. A Solo 401(k) owner can keep employer contributions at 6% and still reach the $72,000 ceiling through those additional buckets — something a SEP IRA owner categorically cannot do.

Trap 7: Zero Tax Credits — $1,500 Left on the Table

Congress created two tax credits to encourage 401(k) adoption by businesses: a startup cost credit and an automatic enrollment contribution credit. The SEP IRA is excluded from both.

A Solo 401(k) that includes automatic enrollment provisions qualifies for $500 per year for three consecutive years — a total of $1,500 in direct tax credits. This is a dollar-for-dollar reduction in tax liability, not just a deduction.

Trap 8: The Roth SEP IRA Is Theory, Not Reality

SECURE 2.0 authorizes Roth contributions inside a SEP IRA. In practice, Fidelity, Schwab, and Vanguard do not support Roth SEP IRA contributions, as of the webinar date. The legal authorization exists; the operational infrastructure does not.

A Solo 401(k) has no such gap. Pre-tax contributions, Roth contributions, and mega backdoor Roth contributions are all available through the plan document — and the plan is fully portable across custodians including Fidelity, Schwab, E*Trade, and others.

Trap 9: The SEP IRA Contribution Lockout

If a self-employed individual makes contributions to a safe-harbor SEP IRA using IRS Form 5305-SEP, they are barred from making contributions to a Solo 401(k) for the same tax year. Funding the SEP IRA freezes access to every additional bucket the Solo 401(k) offers — the employee elective deferral, the voluntary after-tax contribution — for the entire year.

Trap 10: The Form 5498 Audit Trail

The SEP IRA’s “no paperwork” reputation is a myth. Financial custodians are legally required to file IRS Form 5498 reporting every contribution made to a SEP IRA. This creates an audit trail that the IRS matches against personal Schedule C or W-2 filings every year — creating ongoing scrutiny that a Solo 401(k) owner does not face on contributions.

A Solo 401(k) owner files Form 5500-EZ only when the plan’s total assets — including any connected defined benefit plan — exceed $250,000. Below that threshold, there is no annual contribution reporting requirement for the plan itself. Pre-tax and/or Roth Employee, Pre-tax Employer, and Voluntary After-Tax contributions are all non-reportable by the plan until that threshold is crossed.

Bonus Trap 1: You Cannot Roll a Roth IRA Into a SEP IRA

SECURE 2.0 authorized Roth dollars inside a SEP IRA, which leads some people to assume a Roth IRA can be rolled into a SEP IRA. The IRS rollover chart is clear: a Roth IRA cannot be rolled into a SEP IRA. The same restriction applies to rolling a Roth IRA into a Solo 401(k).

Understanding the rollover chart correctly before attempting any consolidation move matters. Attempting an impermissible rollover triggers taxable events and possible penalties.

Bonus Trap 2: The Rule of 55 Never Applies to a SEP IRA

The Rule of 55 allows individuals who separate from service at age 55 or older to take distributions from a qualified plan without the 10% early-withdrawal penalty. A SEP IRA is an IRA, not a qualified plan — the Rule of 55 never applies to it.

A Solo 401(k) is a qualified plan, so the Rule of 55 can apply. For a solopreneur, “separating from service” means completely dissolving and closing the business. That is a high bar — but the option exists. With a SEP IRA, the option does not exist under any circumstances.

SEP IRA vs Solo 401(k): Full Feature Comparison for Self-Employed Business Owners

SEP IRA vs Solo 401(k) bottom line: the Solo 401(k) wins on eleven of twelve features; the two plans are equal only on the Roth IRA rollover restriction.

Live Attendee Questions from the Webinar

Can a Schwab or Fidelity after-tax Solo 401(k) account be set up without a financial advisor, then transfer the funds to a Roth IRA managed by an advisor?

SEP IRA vs Solo 401(k): Frequently Asked Questions

My Solo 401k Financial daily webinar series — Solo 401(k) Plan Document Is Not a Commodity. Duration: 18:14

Key Takeaways

• The Solo 401(k) plan document — not the brokerage — determines whether a plan allows the Mega Backdoor Roth, participant loans, in-plan Roth conversions, and alternative investments.
• Fidelity and Schwab’s own Solo 401(k) plan documents do not permit Mega Backdoor Roth contributions or participant loans; these features require a separate, advanced plan document.
• A Solo 401(k) participant loan allows borrowing up to 50% of the account balance, not to exceed $50,000, with repayment at prime-plus-one-percent interest over up to five years — or up to thirty years for a primary residence purchase.
• The 2026 Solo 401(k) voluntary after-tax contribution limit is $72,000 (before catch-up); a solopreneur whose W-2 wages from a C-Corp meet or will meet that threshold can contribute the full amount and immediately convert it to a Roth Solo 401(k) — the Mega Backdoor Roth strategy.
• Once a Solo 401(k) plan balance exceeds $250,000 (including any defined-benefit plan), an annual Form 5500-EZ must be filed; the IRS penalty for late filing is $250 per day, and discount brokerages do not prepare this form.
• Eligible solopreneurs can claim up to $1,500 in Solo 401(k) tax credits, which more than offsets My Solo 401k Financial’s fees ($650 initial cost; $125 annual fee thereafter) for the first seven years.
• My Solo 401k Financial does not hold or have access to client account funds, making the firm fully compatible with advisors and clients who want custody at Fidelity, Schwab, E-Trade, or hundreds of other institutions.

What Does the Solo 401(k) Plan Document Actually Control?

The Solo 401(k) plan document is the legal rulebook for the plan. When a solopreneur opens a Solo 401(k) directly at a discount brokerage, that brokerage’s plan document governs what the plan can and cannot do — and those documents are written to keep operations simple for the brokerage, not to maximize features for the participant.

Specifically, the Solo 401(k) plan document controls:

• Contribution types — whether voluntary after-tax contributions (the first step of the Mega Backdoor Roth) are permitted
• In-plan Roth conversions — whether pre-tax or after-tax dollars can be converted to a Roth account inside the plan
• Participant loans — whether the participant can borrow from the plan at all
• Investment range — whether the plan is limited to publicly traded securities or can hold alternative assets such as real estate, cryptocurrency, precious metals, and private equity
• Withdrawal rules — the conditions under which distributions are permitted

Two Solo 401(k) plans held at the same brokerage can have completely different capabilities if they were established under different plan documents. A plan opened with My Solo 401k Financial’s documents at Fidelity or Schwab has access to features that the brokerage’s own Solo 401(k) plan documents do not permit.

Feature Comparison: Discount Brokerage Plan vs. Advanced Plan Document

The table above compares which features are available based on the plan document provider, not the brokerage where accounts are held. A plan using My Solo 401k Financial documents can be held at Fidelity, Schwab, or any other institution that will open accounts for third-party solo 401k plans.

How the Full Roth Toolkit Works in a Solo 401(k) Plan

The Solo 401(k) plan document determines whether the plan offers the complete Roth menu. SECURE 2.0 compelled discount brokerages to permit at least Roth elective deferrals (since catch-up contributions must be made as Roth contributions for certain High W-2 Wage earners) but they still do not offer Mega Backdoor Roth contributions or in-plan Roth conversions.

Mega Backdoor Roth: The Two-Step Process

The Mega Backdoor Roth strategy uses voluntary after-tax contributions — a contribution type that Fidelity’s and Schwab’s own plan documents do not allow. The process has two steps:

1. Voluntary after-tax contribution — the solopreneur contributes after-tax dollars to the voluntary after-tax account inside the Solo 401(k). For 2026, a solopreneur whose W-2 wages from a C-Corp equal or will equal $72,000 can contribute up to $72,000 as a voluntary after-tax contribution (assuming no other contributions to the plan or to a 403(b)).
2. In-plan conversion — those after-tax dollars are immediately transferred to the Roth Solo 401(k) account (or to a Roth IRA). This second step is a conversion and triggers a reporting requirement on Form 1099-R.

Learn more about the Mega Backdoor Roth using a Solo 401(k) plan on the My Solo 401k Financial website.

2026 Catch-Up Contributions and the $150,000 Roth Threshold

For 2026, participants age 50 and older can make an additional $8,000 catch-up contribution above the $72,000 annual addition limit. Participants age 60, 61, 62, or 63 at the end of 2026 may be eligible for a higher “super catch-up” contribution of $11,250 (instead of $8,000) under SECURE 2.0. Under SECURE 2.0, catch-up contributions must be made as Roth contributions for participants whose prior-year wages exceeded $150,000 (which will increase over time) — but participants whose W-2 wages are $150,000 or less may make catch-up contributions as pre-tax contributions.

Solo 401(k) Participant Loans: How the $50,000 Loan Feature Works

The Solo 401(k) plan document must expressly permit participant loans for a plan to offer them. Fidelity’s and Schwab’s own plan documents do not allow this feature. A plan established under My Solo 401k Financial’s documents can allow the participant to borrow from their own retirement account and repay themselves with interest.

Key loan rules under a properly documented Solo 401(k):

• Maximum loan amount: 50% of vested account balance, not to exceed $50,000
• Permissible uses: Any purpose (general purpose loan)
• General purpose repayment term: Five years, with equal monthly or quarterly payments of principal and interest
• Primary residence purchase: Term can be extended to match the underlying mortgage term — potentially up to 30 years
• Interest rate: Prime rate plus 1% or CD rate plus 2%
• Documentation: Required loan documents must be prepared; My Solo 401k Financial prepares these at no additional charge within one business day of receiving the applicable form submission

Investment Freedom: What a Truly Advanced Solo 401(k) Plan Document Unlocks

A discount brokerage Solo 401(k) plan document limits investments to whatever that brokerage offers — typically publicly traded stocks, ETFs, and mutual funds. An advanced Solo 401(k) plan document removes that restriction and gives the participant checkbook control — the ability to write checks or initiate wire transfers directly from the plan’s bank account to fund any IRS-permissible investment.

Asset classes available under an advanced Solo 401(k) plan document include:

• Publicly traded stocks, ETFs, and mutual funds (same as at any brokerage)
• Real estate (rental property, raw land, notes)
• Precious metals (IRS-approved gold, silver, platinum, palladium)
• Cryptocurrency
• Private equity and pre-IPO stock
• Other alternative investments permitted by ERISA and IRS rules

Keep Your Brokerage and Your Advisor: How the Model Works

The key distinction between My Solo 401k Financial and other Solo 401(k) providers is custody. My Solo 401k Financial is a plan document provider and compliance support firm, not a custodian. The firm never holds, accesses, or manages client account assets.

The workflow for a solopreneur or advisor who wants advanced Solo 401(k) features while keeping existing custodial relationships:

1. Obtain the Solo 401(k) plan documents from My Solo 401k Financial (online application; documents prepared same business day after payment).
2. Open the Solo 401(k) trust account(s) at the bank, brokerage, or credit union of choice — Fidelity, Schwab, E-Trade, or any of hundreds of banks and credit unions nationally.
3. Nickname each account (pre-tax, Roth, voluntary after-tax) inside the brokerage’s online interface to keep them organized. The brokerage provides the accounts; My Solo 401k Financial provides the plan and compliance support.
4. Submit forms at mysolo401k.net/forms whenever a reportable transaction occurs (Mega Backdoor Roth conversion, loan request, distribution).

For advisors, this model means the advisor’s assets under management remain under the advisor’s custody at their preferred custodian, while the advisor’s solopreneur clients gain access to features the brokerage’s own plan documents would not allow.

Explore the full range of Solo 401(k) plan features and setup options at My Solo 401k Financial.

Advanced Compliance Support: Form 5500-EZ, Form 1099-R, and the $1,500 Tax Credit

Form 5500-EZ: The $250-Per-Day Penalty Most Solopreneurs Don’t Know About

When the total value of a Solo 401(k) plan — including any defined benefit plan the solopreneur maintains — exceeds $250,000, the IRS requires an annual informational return on Form 5500-EZ. The late-filing penalty is $250 per day with no statutory maximum. Discount brokerages do not prepare this form. My Solo 401k Financial prepares and electronically files the Form 5500-EZ at no additional charge when clients notify the firm in time to capture the required financial data.

Form 1099-R for Roth Conversions

The second step of the Mega Backdoor Roth — converting voluntary after-tax contributions to Roth — is a taxable conversion that must be reported on Form 1099-R. My Solo 401k Financial prepares the Form 1099-R at no additional charge when clients submit the after-tax-to-Roth transfer notification through the firm’s website.

The $1,500 Solo 401(k) Tax Credit

My Solo 401k Financial was the first Solo 401(k) provider to offer plan documents that enable eligible solopreneurs to claim $1,500 in Solo 401(k) tax credits — credits that exceed the firm’s fees for the first seven years. The firm’s fee structure is $650 at setup (a $525 establishment fee plus the first $125 annual fee), then $125 per year thereafter. The flat annual fee does not increase as plan value grows.

Attendee Questions from the Webinar

Mike’s Question: Do I Need to Do Anything at Fidelity Besides Renaming the Accounts?

Attendee Mike asked whether there is anything at Fidelity needed to differentiate the Solo 401(k) sub-accounts — pre-tax, Roth, and voluntary after-tax — beyond simply renaming them.

The answer: renaming (nicknaming) the accounts is essentially all that is needed. When a customer brings My Solo 401k Financial plan documents to Fidelity, Fidelity’s role is to provide the brokerage accounts — not to act as plan administrator, not to police the plan, and not to provide compliance support. The participant logs into Fidelity, uses the gear/settings option on each account, and assigns a nickname (e.g., “Solo 401k Pre-Tax,” “Solo 401k Roth,” “Solo 401k After-Tax”) to track each account type.

Manisha’s Question: C-Corp W-2 Wages, Mega Backdoor Roth Timing, and SEP IRA RMDs

Attendee Manisha asked: “My W-2 wages for my C-Corp by the end of June 2026 will exceed $72,000. Can I contribute $72,000 to my voluntary after-tax account in the first week of July and immediately move the money to the Roth Solo 401(k)? I have a SEP IRA in Fidelity. I’m currently taking RMDs from my SEP IRA. Do I have to roll my SEP IRA into my new Solo 401(k) pre-tax account?”

The answer to the first part: yes. A solopreneur can make 2026 Solo 401(k) contributions as long as the income to justify those contributions has been or will be earned by year-end. Making a $72,000 voluntary after-tax contribution in early July — when W-2 wages will reach $72,000 by June 30 — is permissible, provided no other contributions have been made to the Solo 401(k) or to a 403(b) that would reduce the available limit. The contribution can be made, then immediately converted to the Roth Solo 401(k).

The answer to the second part: no. A solopreneur taking required minimum distributions from a SEP IRA cannot roll the RMD amounts themselves into the Solo 401(k). However, the remaining non-RMD balance in the SEP IRA can be transferred (rolled over) to the pre-tax Solo 401(k) — but there is no requirement to do so. The solopreneur may leave the SEP IRA where it is.

The deadline to make all 2026 contributions — including catch-up contributions — is the business tax return deadline including any timely filed extension. For a sole proprietor or single-member LLC, that is April 15, 2027, or October 15, 2027 with extension.

Key Terms Defined

Solo 401(k) plan document

The legal instrument that establishes and governs a one-participant 401(k) plan. The plan document determines which contribution types, investment categories, loan features, and distribution rules are available to the plan participant. Two plans at the same brokerage can have entirely different capabilities depending on whose plan document was used.

Mega Backdoor Roth

A two-step strategy available under Solo 401(k) plans whose documents permit voluntary after-tax contributions. Step one: the participant contributes after-tax dollars up to the annual addition limit ($72,000 for 2026 before catch-up). Step two: those after-tax dollars are converted to the Roth Solo 401(k) or Roth IRA, triggering a 1099-R but generating no taxable income because the contribution was already after-tax.

Checkbook control

A feature of Solo 401(k) plans under which the participant trustee has direct signing authority over a bank account held in the name of the Solo 401(k) trust. This allows the participant to write checks or initiate wires to fund non-brokerage investments — such as real estate or private equity — without going through a custodian for each transaction.

Form 5500-EZ

The annual information return required by the IRS for one-participant 401(k) plans whose total assets — including any related defined benefit plan — exceed $250,000 at year-end. The late-filing penalty is $250 per day. Discount brokerages that serve as plan document providers do not prepare this form; My Solo 401k Financial does, at no additional charge (for those who timely request it and provide info needed in a timely fashion).

In-plan Roth conversion

A transaction inside a Solo 401(k) plan in which pre-tax or after-tax funds are converted to the Roth account within the same plan. This triggers income recognition (for pre-tax conversions) and a 1099-R reporting requirement. The conversion feature must be permitted by the plan document — it is not available in Fidelity’s or Schwab’s own Solo 401(k) plan documents.

Frequently Asked Questions

Key Takeaways

• Former employer 401(k) plans almost universally prohibit participant loans after employment ends, and IRAs are legally ineligible for loans under IRC § 4975.
• A Solo 401(k) participant loan allows a qualified solopreneur to borrow up to 50% of the Solo 401(k) balance, not to exceed $50,000, repaid over a 5-year term at prime plus 1% interest (or a CD rate plus 2%).
• To qualify for a Solo 401(k), a solopreneur must have self-employment income and no non-owner, non-spouse full-time W-2 employees working for any business owned by them or their spouse.
• Rolling over a former employer plan to a My Solo 401k Financial Solo 401(k) is a tax-free direct rollover reported to the IRS via a 1099-R as a non-taxable transfer.
• Once rollover funds clear the Solo 401(k) account, the loan can be taken immediately — no waiting period and no vesting period applies.

My Solo 401k Financial daily webinar — You CAN’T Borrow From an Old 401k — UNLESS You Do This First [Air Date: 8/31/2026]

Why Former Employer 401(k) Plans Block Participant Loans

Former employer 401(k) plans create “stranded capital” — funds that waste away in a plan the account holder can no longer fully use. Once an employee leaves a company, the former employer plan almost always strictly prohibits new participant loans. The core reason is logistical: most corporate plans collect loan repayments through paycheck deductions, and a departed employee no longer receives a paycheck.

Beyond the loan prohibition, former employer plans create additional friction for departed employees. Fees that were subsidized during active employment often increase because the employer has no incentive to continue subsidizing costs for ex-employees. Investment options may also narrow, and no new contributions are permitted since the individual no longer works for the sponsoring employer.

Why Rolling to an IRA Doesn’t Solve the Loan Problem

Rolling a former employer 401(k) into a traditional IRA is a common default choice, but it eliminates the possibility of a participant loan entirely. IRAs cannot make loans to their owners. An IRA rollover offers no path to accessing the funds through a loan.

The Fix: Roll Over to a Solo 401(k) That Allows Participant Loans

A Solo 401(k) — also called a self-employed 401(k) or individual 401(k) — is a qualified retirement plan available exclusively to self-employed individuals and small business owners with no non-owner, non-spouse full-time W-2 employees. Unlike a standard brokerage Solo 401(k) offered by Fidelity or Schwab, a Solo 401(k) established with plan documents from My Solo 401k Financial explicitly permits participant loans.

Discount Brokerage Solo 401(k) Plans Don’t Allow Loans

Schwab and Fidelity each offer their own Solo 401(k) plans, but neither plan allows 401(k) participant loans. To access the loan feature, a solopreneur must use plan documents that explicitly authorize loans — and then open a brokerage or bank account using those documents. My Solo 401k Financial provides IRS-approved plan documents that authorize loans, and helps clients open accounts at the bank or brokerage of their choice, including Fidelity and Schwab (since they will open accounts for solopreneurs who bring their own solo 401k plan documents).

Who Qualifies for a Solo 401(k)?

Solo 401(k) eligibility rests on two requirements. Meeting both unlocks access to the plan, the rollover, and the loan.

Requirement 1: Self-Employment Income

The solopreneur must report earned self-employment income on their taxes. The specific reporting line depends on the business structure:

• Sole proprietorship: net profit on line 31 of Schedule C
• S-corp or C-corp: W-2 wages paid by the business to the owner
• Partnership: income on line 14 of Schedule K-1

A formal legal entity (LLC, S-corp, C-corp) is not required. Many clients of My Solo 401k Financial operate as sole proprietors with no separate business entity.

Critically, a day job does not disqualify a solopreneur. An individual with a W-2 employer who also earns side self-employment income can establish a Solo 401(k) based on that side income, provided they meet the second requirement.

Requirement 2: No Non-Owner, Non-Spouse Full-Time W-2 Employees

The plan cannot cover any non-owner, non-spouse full-time W-2 employee working for any business owned by the solopreneur or their spouse (i.e. w-2 employee age 21 or older who works 1000 hours per year with 1 year of service or 500 hours per year for 2 consecutive years). A spouse who actively works in the business and earns their own self-employment income can also participate in the Solo 401(k), effectively doubling the household’s contributions and savings.

Solo 401(k) vs. Former Employer Plan vs. Traditional IRA: Side-by-Side

Table summary: A Solo 401(k) established with My Solo 401k Financial plan documents is the only rollover destination that unlocks participant loans, high contribution limits, alternative investments, and SECURE Act tax credits simultaneously for a qualifying solopreneur.

How the Direct Rollover Works: Step by Step

The Solo 401(k) participant loan strategy requires completing a direct rollover before the loan can be taken. My Solo 401k Financial provides hands-on support throughout the process, including deep experience transferring funds from hundreds of different institutions.

1. Confirm Solo 401(k) eligibility (self-employment income + no non-owner/non-spouse full-time W-2 employees).
2. Sign up at mysolo401k.net; plan documents are prepared within the same business day.
3. My Solo 401k Financial obtains the EIN for the plan and assists in opening a bank or brokerage account (e.g., Fidelity, Schwab, local bank) in the plan’s name.
4. Request a direct rollover from the former employer plan administrator — funds transfer by check, made payable to the Solo 401(k) plan, not the individual.
5. Deposit the check(s) into the Solo 401(k) account. Pre-tax and Roth money typically arrive as two separate checks.
6. Wait for funds to clear.
7. Submit the loan questionnaire on the My Solo 401k Financial website; loan documents are prepared within one business day.
8. Transfer loan proceeds to a personal bank account; repay per the loan schedule.

Tax Reporting of the Rollover

The former employer plan administrator reports the rollover to the IRS via a 1099-R, coded as a non-taxable direct rollover. If the administrator makes a reporting error, documentation showing that the transfer was directed as a direct rollover can be used to correct the record. The rollover itself carries no taxes and no penalties when processed correctly.

Timeline: How Long Before the Loan Is Available?

The rollover timeline depends on the former employer plan administrator’s processing speed. The typical path runs approximately two to three weeks: the administrator issues a check, the check arrives by mail, and the check clears the Solo 401(k) account. My Solo 401k Financial works in parallel to open the bank or brokerage account during this period, so the solopreneur can deposit the check immediately upon arrival. Once funds clear, the loan can be taken right away.

Solo 401(k) Participant Loan Terms: What to Expect

A Solo 401(k) participant loan from My Solo 401k Financial follows IRS rules. The loan terms are not set by a bank or credit institution.

Table summary: A Solo 401(k) participant loan carries no bank qualification requirements. The solopreneur repays the loan — including interest — back into their own retirement account.

Interest payments flow back into the Solo 401(k) account, not to a lender. The solopreneur is effectively paying interest to their own retirement plan. To learn more about the Solo 401(k) plan structure and features, the My Solo 401k Financial website provides extensive documentation.

Additional Features Unlocked by the Solo 401(k) Rollover

Beyond loan access, rolling a stranded former employer plan into a Solo 401(k) with My Solo 401k Financial opens additional wealth-building tools that are unavailable in a former employer plan or standard IRA.

Mega Backdoor Roth Solo 401(k) Contributions

My Solo 401k Financial was the first Solo 401(k) provider to offer a plan supporting the Mega Backdoor Roth strategy. For 2026, a solopreneur can contribute up to $72,000 (or more if age 50 or older) with sufficient self-employment income, with contributions ultimately directed into a Roth account. A participant loan and Mega Backdoor Roth contributions are fully compatible — they are separate transactions that do not interfere with each other.

SECURE Act Tax Credits: $500/Year for Three Years

My Solo 401k Financial was also the first Solo 401(k) provider to offer a plan that enables solopreneurs to claim SECURE Act tax credits. The plan includes an automatic contribution (EACA) feature, which unlocks a $500-per-year tax credit for three consecutive years — $1,500 in total. The solopreneur retains the right to opt out of the default contribution amount and contribute on any schedule they prefer, while still claiming the credits.

Alternative Investments and Checkbook Control

Solo 401(k) plan documents from My Solo 401k Financial authorize a wide range of alternative investments including real estate, cryptocurrency, notes, precious metals, and private equity. The plan’s checkbook control structure allows the solopreneur to act quickly on investment opportunities without waiting for a custodian to process a request. Self-directed IRAs can offer similar investments, but typically carry higher fees and slower processing times.

Investing in Real Estate Through a Solo 401(k) — An Attendee Question

Webinar attendee Michael asked how to purchase real estate using a Solo 401(k). The key rules governing Solo 401(k) real estate investing include:

• The investment must be for a pure investment purpose, not personal use.
• Real estate must be purchased from an unrelated party — not from the solopreneur or a closely related person.
• The property must be titled in the name of the Solo 401(k) plan.
• All income and expenses related to the property must flow in and out of the Solo 401(k) account.
• The solopreneur cannot personally work on the property or use it for personal purposes.
• The property must be leased or sold to an unrelated person.

Form 5500-EZ and 1099-R Support

A Form 5500-EZ is required when the Solo 401(k) plan value — including any defined benefit plan sponsored by the solopreneur — exceeds $250,000. My Solo 401k Financial provides 5500-EZ preparation at no additional charge when timely notified. The firm prepares the form in an electronic filing system, assigns it to the solopreneur for signature, and submits it to the IRS upon receipt.

A Form 1099-R is required in certain transactions, such as a Mega Backdoor Roth conversion where after-tax contributions are transferred to a Roth account. My Solo 401k Financial prepares the 1099-R and files it when timely requested through the firm’s online forms.

Definitions

Solo 401(k)

A qualified defined contribution retirement plan available exclusively to self-employed individuals and small business owners with no non-owner, non-spouse full-time W-2 employees. Also called a self-employed 401(k) or individual 401(k).

Participant Loan

A loan made from a qualified retirement plan — such as a Solo 401(k) — to a plan participant. The IRS rules cap the loan at the lesser of 50% of the vested account balance or $50,000. IRAs are prohibited from making participant loans.

Direct Rollover

A tax-free transfer of funds from one qualified retirement plan directly to another, where the payment is made payable to the receiving plan rather than to the individual. A direct rollover avoids mandatory 20% federal income tax withholding and the 60-day rollover rule that applies to indirect rollovers.

Mega Backdoor Roth

A strategy in which a Solo 401(k) participant makes voluntary after-tax contributions to the plan and then converts those contributions to a Roth account. This allows contributions beyond the standard pre-tax and Roth elective deferral limits, up to the overall 415(c) limit ($72,000 for 2026).

EACA (Eligible Automatic Contribution Arrangement)

A plan design feature that sets a default contribution percentage for participants. Under the SECURE Act, a plan that includes an EACA enables the plan sponsor to claim a $500-per-year tax credit for up to three years. Participants retain the right to opt out of the default contribution amount.

Form 5500-EZ

An IRS annual return filed by one-participant retirement plans (including Solo 401(k) plans) when the plan’s total value (including the value of any defined benefit plan) exceeds $250,000 at the end of the plan year.

Frequently Asked Questions

Full webinar replay: Morgan Stanley Solo 401(k) plan document resignation and the December 31, 2026 restatement deadline, hosted by George Blower of My Solo 401k Financial.

Definitions

Prototype plan

A pre-approved retirement plan document maintained by a financial institution and adopted by many employers, under which the institution handles amendments and holds the IRS opinion letter.

IRS opinion letter

A letter from the IRS confirming that the form of a pre-approved plan document meets Internal Revenue Code requirements. It is referenced when filing Form 5500-EZ.

Restatement

The adoption of a new, complete plan document for an existing plan, preserving the plan’s original effective date rather than starting a new plan.

RPM account

The Morgan Stanley non-prototype account type used for retirement plans whose documents are provided by a third party rather than by Morgan Stanley.

Form 5500-EZ

The annual IRS return for a one-participant retirement plan, required once total plan assets exceed $250,000.

Mega backdoor Roth

A strategy using voluntary after-tax contributions to a 401(k) that are then converted to Roth, permitted only if the plan document allows both the contributions and the conversion.

Frequently asked questions

What should I do if Morgan Stanley is dropping my Solo 401(k) plan?

Obtain restated plan documents from a third-party provider before December 31, 2026. Morgan Stanley is resigning as the plan document sponsor, not closing accounts. Restating preserves the plan’s original effective date, restores a valid IRS opinion letter, and allows the assets to remain at Morgan Stanley under an RPM account.

Is Morgan Stanley closing my Solo 401(k) account?

No. Morgan Stanley is resigning as prototype plan sponsor effective December 31, 2026, which ends its role as plan document provider. The brokerage account continues and is transitioned to RPM non-prototype status, the same account type Morgan Stanley already uses for clients with third-party plan documents.

What happens if I do nothing before December 31, 2026?

The account converts automatically to a Morgan Stanley RPM account, but the plan is left without a valid adoption agreement and without an IRS opinion letter to rely on. Risks discussed in the webinar include plan disqualification, loss of the contribution deduction, loss of the ability to roll funds in, and IRS penalties for non-compliant plan operation.

Do I have to move my money out of Morgan Stanley?

No. Restating the plan with a third-party document provider lets the assets and any existing advisor relationship stay at Morgan Stanley. My Solo 401k Financial does not hold or access client accounts, so plans remain portable across Morgan Stanley, Fidelity, Schwab, Edward Jones, and other custodians.

Can I still file Form 5500-EZ without the Morgan Stanley opinion letter?

Form 5500-EZ is required once plan assets exceed $250,000, and the filing references the plan’s opinion letter. After the Morgan Stanley resignation takes effect, that letter can no longer be relied on. Restating onto documents that carry their own IRS opinion letter restores the reference for future filings.

What are the tax consequences of closing my Morgan Stanley Solo 401(k) instead?

Closing the plan requires transferring all assets out. A taxable distribution is a taxable event. Rolling the assets to an IRA avoids immediate tax, but the webinar notes a 12-month waiting period before a new plan can be established after closing the existing one.