Schwab RIAs: Secure Your Clients’ 2025 Solo 401(k) Contributions — Only If You Act by 12/31

Watch: Critical deadline information for Schwab RIAs to help self-employed clients maximize 2025 Solo 401(k) contributions

As a Registered Investment Advisor (RIA) who custodies at Schwab, you have a unique opportunity to help your self-employed clients unlock significant tax advantages and retirement savings through a properly structured Solo 401(k) plan. However, there’s a critical deadline approaching that could make or break your clients’ ability to maximize their 2025 retirement contributions.

If your clients want to preserve all contribution options for 2025—including powerful strategies like the Mega Backdoor Roth—the Solo 401(k) plan documents must be in place by December 31, 2025. This article breaks down everything you need to know to help your clients act before this deadline passes.

⚠️ Critical Deadline Alert: December 31, 2025 is the absolute deadline for establishing a Solo 401(k) plan to preserve all 2025 contribution options. The plan documents must be in place by year-end—not the accounts or contributions.

Understanding Solo 401(k) Eligibility

Before diving into the deadline details, it’s essential to understand who qualifies for a Solo 401(k). This retirement plan is specifically designed for self-employed individuals with no full-time W-2 employees (other than a spouse or business partner who owns 3% or more).

Two Essential Eligibility Criteria

Requirement	Details
1. Self-Employment Income	Must report earned self-employment income through W-2 wages (S-Corp/C-Corp), Schedule C (Sole Proprietorship), or K-1 Line 14 (Partnership)
2. No Full-Time Employees	Cannot have non-owner, non-spouse full-time W-2 employees (1,000+ hours/year with 1 year service, or 500+ hours/year for 2 consecutive years)

How Income Type Determines Eligibility

Business Structure	How Income is Reported
S-Corp or C-Corp	W-2 wages received from your business
Sole Proprietorship / Single-Member LLC	Income reported on Schedule C of Form 1040
Partnership (Form 1065)	Income reported on Line 14 of K-1

💡 Important Note: Your clients can maintain a W-2 day job and even participate in their employer’s 401(k) while also setting up a Solo 401(k) for a side business or consulting work—as long as they meet the eligibility requirements.

Why December 31, 2025 is the Critical Deadline

Here’s what many advisors and clients don’t realize: to keep all 2025 Solo 401(k) contributions open until the 2025 business tax return deadline including extension in 2026, including Mega Backdoor Roth strategies, the plan must be established by December 31, 2025. However, “established” doesn’t mean what most people think.

What “Established” Actually Means

✅ Good News for Advisors: “Establishing” the plan simply means having the plan documents in place by December 31st. Your clients do NOT need to:

Open Schwab accounts by year-end
Make any contributions by year-end
Obtain an EIN for the plan by year-end
Fund the accounts by year-end

A Solo 401(k) is a legal entity—specifically, a federal retirement trust. Like any legal entity, it’s the documents that create it. Once those documents are in place by December 31, 2025, your clients have preserved all their contribution options for the entire 2025 tax year.

The Two-Step Process Timeline

Step	Deadline	Action Required
Step 1: Sign Up & Get Documents	By December 31, 2025	Sign up with My Solo 401k Financial and receive plan documents (same business day processing)
Step 2: Open Accounts & Fund	By business tax return deadline + extensions (2026)	Open Schwab CRA accounts, obtain EIN, and make contributions for 2025

This two-step approach gives your clients flexibility. Even if they sign up on December 30th or 31st, they’ll receive their plan documents the same business day, meeting the deadline. They then have until their 2025 business tax return deadline (including any extensions filed in 2026) to open accounts and make contributions.

Understanding Schwab’s Role in Your Client’s Solo 401(k)

As an RIA who custodies at Schwab, it’s important to understand what Schwab provides versus what a specialized Solo 401(k) provider like My Solo 401k Financial offers.

Schwab as Custodian vs. Plan Provider

Provider	Role	What They Provide
My Solo 401k Financial	Plan Provider	• Advanced plan documents (Mega Backdoor Roth enabled) • Solo 401k compliance support • $1,500 tax credit eligibility • Solo 401(k) loan provisions • 5500-EZ filing support • Hands-on guidance
Schwab	Account Custodian	• Company Retirement Accounts (CRA accounts) • Investment custody and execution • Account statements and reporting • Access to Schwab’s investment platform • Integration with your advisory practice

💡 Key Distinction: Schwab does offer their own basic Solo 401(k) plan, but it lacks critical features like Mega Backdoor Roth capabilities, loan provisions, $1500 tax credit and the flexibility your self-employed clients need. By using My Solo 401k Financial for plan documents while maintaining Schwab custody, your clients get the best of both worlds.

What Are Schwab CRA Accounts?

Company Retirement Accounts (CRA) are Schwab’s internal designation for brokerage accounts established for third-party retirement plans—in this case, Solo 401(k) plans provided by My Solo 401k Financial.

These CRA accounts at Schwab allow you to:

Maintain custody of your client’s retirement assets on Schwab’s institutional platform
Keep the account associated with your advisory practice
Manage investments on behalf of your clients
Access the full range of Schwab’s investment options
Generate consolidated reporting across all client accounts

✅ Advisor Benefit: My Solo 401k Financial has helped thousands of clients open Schwab CRA accounts. We handle the paperwork preparation, EIN acquisition, and provide step-by-step guidance—making the process seamless for both you and your clients.

Conclusion: Don’t Let Your Clients Miss This Deadline

The December 31, 2025 deadline for establishing a Solo 401(k) is critical to keep your clients’ 2025 Solo 401k contribution options open.

The good news is that meeting this deadline is simple: clients just need to sign up with My Solo 401k Financial by 12/31/2025. They can then take their time opening Schwab CRA accounts and making contributions throughout 2026 (up to their tax return deadline, including extensions).

Ready to Help Your Clients Secure Their 2025 Solo 401(k) Contributions?Get Started Today

Remember: This information is provided for educational purposes only and should not be construed as tax, legal, or investment advice. Always consult with qualified tax, legal, and investment professionals before making retirement planning decisions.