MySolo401k Review (2026)
MySolo401k offers the most cost-effective non-prototype Solo 401k with full features, checkbook control, and the flexibility to invest with any brokerage.
Pricing Details
| Fee Type | Amount |
|---|---|
| Setup Fee | $525 |
| Annual Fee | $125 |
| Total First Year | $650 |
One of the lowest annual fees among non-prototype providers.
Pros and Cons
- Lowest annual fee among full-service non-prototype providers ($125/year)
- IRS-approved plan documents
- Full checkbook control with trust account
- Wide range of alternative investments (real estate, crypto, private equity)
- Supports Mega Backdoor Roth strategy
- Can connect to any brokerage (Fidelity, Schwab, etc.)
- Includes IRS audit support at no extra cost
- Higher upfront setup fee ($525)
- Requires more self-management than prototype plans
User Sentiment Analysis
Receives the highest rating in the unbundled document provider category. Users specifically cite "Daily Office Hours" webinars and active community forums as standout support features. Users feel supported in complex compliance matters.
Strategic Insights
- Lowest long-term cost for full-featured Solo 401k ($125/year vs $360-$480/year for competitors)
- Brokerage flexibility lets you use Fidelity's zero-expense funds while maintaining all advanced features
- The Checkbook LLC model offers superior speed and privacy for alternative investments—no custodian sign-off required
- For high earners, the Mega Backdoor Roth strategy can shelter an additional $20,000-$40,000 annually—tax savings far exceed the annual fee
Market Position
MySolo401k Financial has established itself as the benchmark for self-directed Solo 401(k)s. Their model focuses on high education, community engagement, and a flat-fee structure that scales exceptionally well for large balances. The sheer volume of positive reviews on Trustpilot and BBB indicates a level of support that creates a competitive "moat" against rivals.
Target Audience: Self-directed investors who want maximum control, alternative asset access, and value long-term cost efficiency over premium features
Watch Out For
- Higher upfront setup fee ($525) compared to some competitors
- Requires more self-management than "set and forget" prototype plans
- Mobile app (wpwBot) has limited functionality—web portal is the primary interface
Feature Comparison
Compliance Notes
Includes Form 5500-EZ and Form 1099-R preparation in the annual fee—a significant differentiator from free brokerage plans.
Full Review
MySolo401k has established itself as one of the most respected non-prototype Solo 401k providers, offering comprehensive features at industry-low annual costs.
Their plan documents are IRS-approved and include all the advanced features that prototype plans lack: Roth contributions, participant loans, after-tax contributions (enabling Mega Backdoor Roth), and alternative investment capabilities.
A key advantage is their brokerage flexibility - you can establish your Solo 401k trust account at Fidelity, Schwab, or virtually any other brokerage of your choice. This means you're not locked into a proprietary platform and can benefit from the low costs and research tools of major brokerages.
The $125 annual fee is the lowest among comparable providers, making MySolo401k particularly attractive for long-term cost savings. They also include IRS audit support at no additional cost, providing peace of mind for compliance concerns.
The main consideration is the $525 setup fee and more hands-on involvement than a prototype plan. However, MySolo401k includes Form 5500-EZ preparation in their annual fee, removing a significant compliance burden.
Key Features
- Traditional, Roth, and After-Tax contributions
- Participant loans up to $50,000
- Checkbook control
- Alternative investments
- Mega Backdoor Roth conversions
- Brokerage account at provider of your choice
- IRS audit support included
Who Is This Best For?
Hands-on investors who want maximum control, alternative investment access, and long-term cost efficiency with the lowest ongoing fees.
Last updated: January 13, 2026