Solo 401k With 1099 Income: No LLC Needed, Up to $72,000 for 2026
By Mark Nolan, Founder/ Compliance Officer, My Solo 401k Financial · Published
Direct answer: A self-employed contractor can open a Solo 401k with 1099 income when that income is reported on Form 1099-NEC for services the contractor actually performed. No LLC or corporation is required. Contributions are calculated from net profit on Schedule C, line 31, reduced by one-half of self-employment tax. Interest (1099-INT), dividends (1099-DIV), and retirement distributions (1099-R) are not earned income and do not qualify.
Key Takeaways
- Form 1099-NEC income from services you personally perform qualifies a sole proprietor for a Solo 401k without forming an LLC or corporation.
- Solo 401k contributions for a 1099 contractor start from Schedule C, line 31 (net profit), reduced by one-half of self-employment tax.
- Income reported on Form 1099-INT, Form 1099-DIV, or Form 1099-R is not earned income and cannot support Solo 401k contributions.
- For 2026, the overall Solo 401k limit is $72,000 under age 50, $80,000 with the $8,000 catch-up, and $83,250 for ages 60 through 63.
- A contractor who maxes a $72,000 day-job 401k can still put up to $72,000 into a Solo 401k through employer and voluntary after-tax contributions, if self-employment earnings support it.
- A Solo 401k is unavailable if a non-owner W-2 employee works 1,000 or more hours a year in the business; a working spouse is the exception.
- Someone who is not self-employed cannot open a Solo 401k just to consolidate IRAs or isolate pre-tax IRA money for a backdoor Roth IRA.
Status: As of , the Solo 401k eligibility rules and 2026 contribution limits described here are current law; the 2027 limits had not yet been announced when the webinar was recorded.
Full webinar replay: Solo 401k with 1099 income — eligibility, Schedule C math, and 2026 limits, presented by My Solo 401k Financial.
Can you open a Solo 401k with 1099 income?
A Solo 401k with 1099 income is available to any sole proprietor who performs services and receives Form 1099-NEC pay. The 1099-NEC reports non-employee compensation, which the IRS treats as self-employment income. A formal entity is not required. The sole proprietor files Schedule C with the personal Form 1040 return, and that filing is enough.
What determines eligibility is the underlying activity. You must be doing the actual work, not collecting investment returns. An IT consultant paid by clients on 1099-NEC forms meets that test. For a broader look at how the plan works, see our overview of Solo 401k plan rules and features.
“So as you can see, you don’t have to have a formal entity type to qualify for a Solo 401k plan. So whether you are a 1099-NEC contractor or you have your own formal entity such as an LLC, an S corporation or partnership, for example, what matters is the underlying activity.”
(1:51 in the webinar)
Who counts as a 1099 contractor for Solo 401k purposes?
Solo 401k eligibility through 1099 income covers a wide range of independent workers. The webinar named freelancers, consultants, and gig workers such as Uber or Lyft drivers. Real estate agents earning qualifying commissions also fit. Attorneys, accountants, and other professionals may receive 1099-NEC pay directly instead of operating through an LLC.
“Now, again, it has to be Form 1099-NEC, which stands for non-employee compensation. That means you’re a contractor.”
(2:58 in the webinar)
The employee rule for an owner-only business
A Solo 401k is built for an owner-only business. The business cannot employ a non-owner W-2 employee who works 1,000 hours or more in a year. Most 1099 contractors have no employees, so the rule rarely blocks them. A spouse who works in the business is the exception and does not disqualify the plan.
Important: SECURE 2.0 added long-term part-time employee rules that can bring in employees working fewer than 1,000 hours. Confirm your employee situation with your plan provider before hiring anyone.
Which 1099 forms count as earned income for a Solo 401k?
Solo 401k eligibility requires earned income from self-employment activity. The IRS requires earned income both to open the plan and to make contributions. Only Form 1099-NEC meets that standard among the common 1099 forms. Forms reporting interest, dividends, or retirement distributions reflect investment or plan money, not compensation for work.
Summary: Only Form 1099-NEC income counts toward Solo 401k eligibility and contributions; 1099-INT, 1099-DIV, and 1099-R amounts do not.
“That’s not considered earned income. That’s investment income. It’s passive, so it does not qualify for both opening a Solo 401k or for making Solo 401k contributions.”
(10:20 in the webinar)
Why a required minimum distribution cannot be re-contributed
A required minimum distribution from a Solo 401k cannot be deposited back into the Solo 401k or any other retirement account. The distribution is reported on Form 1099-R and is not earned income. A $10,000 RMD stays out of the plan. Personal stock and securities gains are excluded for the same reason.
How are Solo 401k contributions calculated from 1099-NEC income?
Solo 401k contributions for a 1099 contractor are calculated from Schedule C, line 31. Line 31 shows net profit after all business expenses. From that figure, subtract one-half of self-employment tax. The result drives both the employee and employer contribution calculations.
“And then the calculation would be based on line 31 of that Schedule C, which again is the tax return that you attach to your personal Form 1040 return when you are a contractor.”
(7:55 in the webinar)
Example: A consultant receives a separate Form 1099-NEC from each of three clients.
- Add the three 1099-NEC amounts to get total self-employment income.
- Report the total on Schedule C and subtract business expenses.
- Take the net profit on line 31 and subtract one-half of self-employment tax.
- Use the result to calculate employee and employer Solo 401k contributions.
When an LLC receives the 1099-NEC
A single-member LLC taxed as a sole proprietorship may receive the 1099-NEC in the LLC’s name. The Solo 401k calculation is unchanged. The income still flows to Schedule C, and line 31 remains the starting figure. An LLC taxed as an S corporation is different: its Solo 401k contributions are based on W-2 wages.
What are the 2026 Solo 401k contribution limits?
The 2026 Solo 401k contribution limit is $72,000 for participants under age 50. Within that total, the employee deferral is capped at $24,500. Participants age 50 or older can add an $8,000 catch-up. Participants ages 60 through 63 instead qualify for an $11,250 super catch-up under SECURE 2.0.
“But for 2026, the overall Solo 401k contribution limit is $72,000 for those who are under age 50.”
(15:10 in the webinar)
Summary: The 2026 Solo 401k overall limit is $72,000, rising to $80,000 with the regular catch-up and $83,250 with the ages 60–63 super catch-up.
A participant cannot take both catch-ups in the same year. Someone over age 63 reverts to the regular $8,000 catch-up. The webinar noted that 2026 contributions can be made until the 2027 business tax return due date, plus extensions.
Important: For sole proprietors, the timing of the employee deferral election can differ from the deposit deadline. Confirm the election date for your situation before year-end. [VERIFY: firm position on sole proprietor deferral election timing vs. deposit deadline]
Can you have a Solo 401k and a day-job 401k at the same time?
A Solo 401k can run alongside a full-time employer’s 401k when the participant also has side 1099-NEC income. Employee deferrals are aggregated across both plans, so the $24,500 cap is shared. Employer profit-sharing and voluntary after-tax contributions are not aggregated. Each unrelated employer’s plan carries its own $72,000 overall limit.
The webinar used “Johnny” as an example. Johnny works for Microsoft and maxes his $72,000 Microsoft 401k for 2026. Johnny also does contract work on the side and receives 1099-NEC income. He can still open a Solo 401k for that contracting business.
“So my Johnny example, if Johnny has enough earned income from self-employment activity, he can contribute another $72,000 to a Solo 401k plan as a voluntary after-tax Solo 401k contribution.”
(22:17 in the webinar)
Johnny’s after-tax dollars can then be converted to Roth, a strategy known as the Mega Backdoor Roth using a Solo 401k. Johnny could also split the amount between employer profit-sharing and after-tax contributions. Combined, those Solo 401k contributions still cannot exceed $72,000.
Can you open a Solo 401k only to roll over IRAs?
A Solo 401k cannot be opened solely for rollovers by someone who is not self-employed. Self-employment is required both to open the plan and to keep it. Annual contributions are optional, because a Solo 401k is a defined contribution plan. Rollovers have no minimum and do not reduce annual contribution limits.
“So if you don’t meet those eligibility requirements, then no, you’re not gonna be able to transfer IRAs, former employer plans, or utilize the solo to isolate your non-deductible IRA funds…”
(13:53 in the webinar)
Can a spouse or partner join a Solo 401k?
A spouse or partner can be added to a Solo 401k in two different roles. An attendee asked about timing during the live session.
“When is the best time for your partner to join your 401k after she leaves her current employment…?”
(19:09 in the webinar)
Co-trustee versus participant
A Solo 401k co-trustee signs plan documents such as amendments, distribution requests, and bank or brokerage paperwork. A co-trustee does not need to work in the business. A Solo 401k participant must perform self-employment activity in the same business. A partner’s full-time day job does not block participation.
“And can the LLC pay her services? Can she turn around and add that to her contribution to the Solo 401k plan?”
(23:42 in the webinar)
The answer given live was yes, with conditions. The partner must perform self-employment activity in the business. The partner also cannot own a business with full-time employees. Once added, the partner can contribute, roll over IRAs, and take a participant loan. The overall contribution limit applies per participant, not per plan.
Other Solo 401k questions from the live session
Is a Solo 401k a revocable trust?
A Solo 401k is a retirement trust, as are all 401k plans and IRAs. A retirement trust is different from a living trust, land trust, or family trust. A Solo 401k is revocable, meaning it can be amended. Common amendments add a new self-employed business or a new participant.
When can Solo 401k distributions begin?
Solo 401k distributions can begin at normal retirement age, defined in the webinar as 59½ or older. Required minimum distributions from pre-tax funds begin at age 73. The first RMD can be delayed to April 1 of the following year. Delaying means two taxable RMDs in that year.
Solo 401k distributions paid to the participant carry a mandatory 20% federal withholding. The plan must register with the Department of the Treasury and wire that tax. A workaround discussed live is a partial transfer to an IRA first. The transfer is reported on Form 1099-R with code G. IRA distributions are not subject to the mandatory 20% withholding, though income tax is still owed.
Frequently Asked Questions
Can you open a Solo 401k with 1099 income?
Yes, a Solo 401k can be opened with 1099 income reported on Form 1099-NEC. Form 1099-NEC shows non-employee compensation, which means the recipient performed services as an independent contractor. That self-employment income satisfies the earned income requirement. Contractors, freelancers, consultants, and gig workers commonly qualify. Interest, dividend, and retirement distribution forms do not create eligibility.
Do I need an LLC to open a Solo 401k?
No, a Solo 401k does not require an LLC, S corporation, or partnership. A sole proprietor who receives 1099-NEC income and files Schedule C qualifies. What matters is performing actual services, not the legal form of the business. A single-member LLC taxed as a sole proprietorship uses the same Schedule C calculation.
Does 1099-INT or 1099-DIV income count for a Solo 401k?
No, income on Form 1099-INT or Form 1099-DIV does not count for a Solo 401k. Interest from savings accounts or CDs and dividends from personal stock holdings are investment income. Neither is earned income from self-employment. Without 1099-NEC or other self-employment income, these forms cannot support opening a Solo 401k or contributing to one.
How do I calculate Solo 401k contributions from 1099-NEC income?
Solo 401k contributions from 1099-NEC income start with Schedule C, line 31. Add all 1099-NEC amounts, report them on Schedule C, and subtract business expenses. Line 31 shows the resulting net profit. Subtract one-half of self-employment tax from line 31. That figure drives the employee and employer contribution calculations.
Can I have a Solo 401k if I already have a 401k at work?
Yes, a Solo 401k can exist alongside a day-job 401k if you have side self-employment income. Employee deferrals are shared across both plans under one $24,500 cap for 2026. Employer and voluntary after-tax contributions are not shared. A Solo 401k for an unrelated business carries its own $72,000 overall limit, subject to earnings.
What is the Solo 401k contribution limit for 2026?
The 2026 Solo 401k overall contribution limit is $72,000 for participants under age 50. The employee deferral portion is $24,500. Participants age 50 or older can add an $8,000 catch-up, for $80,000 total. Participants ages 60 through 63 can add an $11,250 super catch-up instead, for $83,250 total.
Can I open a Solo 401k just to roll over my IRA if I’m not self-employed?
No, a Solo 401k requires self-employment to open and to maintain the plan. Someone without self-employment activity cannot use a Solo 401k to consolidate IRAs or former employer plans. The same applies to isolating pre-tax IRA funds for a backdoor Roth IRA. Annual contributions are optional, but eligibility is not.
Can my spouse or partner join my Solo 401k?
A spouse or partner can join a Solo 401k as a co-trustee or as a participant. A co-trustee signs plan documents and does not need to work in the business. A participant must perform self-employment activity in the same business. Each participant receives a separate overall contribution limit, because the limit applies per person.
Glossary
- Form 1099-NEC
- An IRS form reporting non-employee compensation paid to an independent contractor for services performed.
- Earned income
- Compensation from work performed, including self-employment income; it excludes interest, dividends, and retirement distributions.
- Schedule C, line 31
- The net profit line on a sole proprietor’s Schedule C, used as the starting figure for Solo 401k contributions.
- Owner-only business
- A business with no non-owner W-2 employees working 1,000 or more hours a year, other than a spouse.
- Voluntary after-tax contribution
- A Solo 401k contribution made with after-tax dollars, often converted to Roth as part of a Mega Backdoor Roth.
- Super catch-up
- A SECURE 2.0 catch-up contribution for participants ages 60 through 63, set at $11,250 for 2026.
This article is based on the [VERIFY: webinar date] live webinar hosted by My Solo 401k Financial. Analysis by Mark Nolan, Founder/ Compliance Officer, My Solo 401k Financial.
Ready to open a Solo 401k for your 1099 income?
My Solo 401k Financial sets up the plan, supports Mega Backdoor Roth contributions, and calculates contributions for clients as part of ongoing support.
Educational purposes only: This article is for general educational purposes and is not tax, legal, or investment advice. Consult a qualified tax professional or financial advisor about your specific situation.
