Quick Answer
A Solo 401(k) lets self-employed individuals contribute up to $70,000 in 2026 (or 100% of self-employment income, whichever is less) by acting as both employee and employer. You can contribute $23,500 as the 'employee' plus up to 25% of net self-employment earnings as the 'employer' contribution.
Best Answer
Priya Sharma, CPA
Best for established freelancers with consistent self-employment income looking to maximize retirement savings
How does a Solo 401(k) work for freelancers?
A Solo 401(k) — also called an Individual 401(k) or one-participant 401(k) — is designed specifically for self-employed individuals and business owners with no employees (except a spouse). Unlike traditional employer 401(k)s, you wear two hats: you're both the employee AND the employer.
This dual role is what makes Solo 401(k)s so powerful. According to IRS Publication 560, you can make two types of contributions:
Employee contributions: Up to $23,500 in 2026 (or 100% of compensation, whichever is less)
Employer contributions: Up to 25% of your net self-employment earnings
Example: $80,000 freelance consultant
Let's say you're a freelance marketing consultant who earned $80,000 in net self-employment income in 2026. Here's how your Solo 401(k) contributions would work:
Step 1: Calculate net self-employment earnings
Step 2: Calculate maximum contributions
This $41,000 contribution reduces your taxable income dollar-for-dollar, potentially saving you $9,000-$13,000 in federal taxes depending on your bracket.
The 25% employer contribution calculation
Here's where it gets tricky. The IRS doesn't let you use your full self-employment income for the employer contribution calculation. You must first reduce it by:
1. Half of your self-employment tax
2. The employer contribution itself (creating a circular calculation)
The effective rate works out to about 20% of your gross self-employment income for most people. Per IRS Publication 560, you can use this simplified formula:
Maximum employer contribution = Net self-employment income × 20%
Contribution deadlines and logistics
When to contribute:
How to set it up:
1. Establish the plan by December 31st
2. Open a Solo 401(k) account with a provider (Schwab, Vanguard, Fidelity)
3. Make contributions directly to your account
4. Report contributions on Form 1040 and Schedule C
Key advantages over other retirement accounts
What you should do
If you're earning at least $30,000+ in self-employment income consistently, a Solo 401(k) is probably your best retirement savings option. Start by calculating your maximum contribution using our deduction finder tool, then compare providers for fees and investment options.
Key takeaway: Solo 401(k)s let you contribute up to $70,000 annually by combining employee contributions ($23,500) with employer contributions (25% of net earnings), potentially saving thousands in taxes for high-earning freelancers.
Key Takeaway: Solo 401(k)s let you contribute up to $70,000 annually by combining employee contributions ($23,500) with employer contributions (25% of net earnings), potentially saving thousands in taxes.
Solo 401(k) contribution limits by income level
| Net Self-Employment Income | Max Employee Contribution | Max Employer Contribution (20%) | Total Max Contribution | Est. Tax Savings |
|---|---|---|---|---|
| $30,000 | $23,500 | $6,000 | $29,500 | $4,400-$7,400 |
| $50,000 | $23,500 | $10,000 | $33,500 | $5,000-$8,400 |
| $75,000 | $23,500 | $15,000 | $38,500 | $5,800-$9,600 |
| $100,000 | $23,500 | $20,000 | $43,500 | $6,500-$10,900 |
| $150,000 | $23,500 | $30,000 | $53,500 | $8,000-$13,400 |
More Perspectives
Priya Sharma, CPA
For freelancers earning six figures who need maximum tax reduction and retirement savings acceleration
Maximum contributions for high earners
When you're earning $100K+ as a freelancer, Solo 401(k)s become even more valuable because you can max out both contribution types and take advantage of catch-up contributions if you're over 50.
2026 limits for high earners:
Example: $150,000 freelance developer
Say you're a freelance software developer with $150,000 in net self-employment income:
Advanced strategies for high earners
1. Defined benefit plans: If you're consistently earning $200K+, consider adding a defined benefit plan on top of your Solo 401(k) for even higher deductions.
2. Roth conversions: Use years with lower income to convert traditional Solo 401(k) funds to Roth at lower tax rates.
3. Spousal contributions: If your spouse helps with the business, you can potentially double your contribution limits.
Cash flow considerations
High earners often face quarterly estimated tax payments of $20K+. Factor your Solo 401(k) contributions into your quarterly estimates to avoid underpayment penalties. The employer contribution can be made as late as your filing deadline, giving you flexibility for year-end tax planning.
Key takeaway: High-earning freelancers can contribute $53,500+ to Solo 401(k)s, potentially saving $15,000+ annually in taxes while building substantial retirement wealth.
Key Takeaway: High-earning freelancers can contribute $53,500+ to Solo 401(k)s, potentially saving $15,000+ annually in taxes while building substantial retirement wealth.
James Okafor, EA
Perfect for freelancers in their first year who want to understand retirement planning basics without overwhelming complexity
Solo 401(k) basics for new freelancers
As a new freelancer, retirement planning might feel overwhelming when you're focused on building your client base. But starting a Solo 401(k) early — even with small contributions — can set you up for significant tax savings and long-term wealth building.
The simple version: A Solo 401(k) lets you save for retirement while reducing your tax bill. Every dollar you contribute reduces your taxable income by one dollar.
Start small, think big
You don't need to earn six figures to benefit from a Solo 401(k). Even contributing $5,000-$10,000 in your first year can save you $1,000-$2,500 in taxes.
Example: $25,000 first-year freelancer
Getting started checklist
1. Track your income carefully — You need net self-employment income to contribute
2. Set aside money monthly — Don't wait until December to fund your account
3. Choose a low-cost provider — Schwab, Vanguard, and Fidelity offer free Solo 401(k)s
4. Start with simple investments — Target-date funds are fine for beginners
5. Make employee contributions by Dec 31 — Employer contributions can wait until tax time
Common new freelancer mistakes
Key takeaway: New freelancers can start Solo 401(k)s with any contribution amount, and even $5,000 annually can save $1,000+ in taxes while building retirement security from day one.
Key Takeaway: New freelancers can start Solo 401(k)s with any contribution amount, and even $5,000 annually can save $1,000+ in taxes while building retirement security.
Sources
- IRS Publication 560 — Retirement Plans for Small Business
Reviewed by Priya Sharma, CPA on February 28, 2026
This content is for educational purposes only and is not a substitute for professional tax advice. Consult a qualified tax professional for advice specific to your situation.