Retirement Planning: SEP-IRA and Solo 401(k) for Detailers

Detaild Academy provides general educational information, not professional tax, legal, or financial advice. Tax laws vary by state and change frequently. Always consult a qualified CPA or attorney for advice specific to your situation.

The Self-Employment Retirement Advantage

Here's something most self-employed people don't realize: you have access to retirement contribution limits that are FAR higher than what W-2 employees get.

A W-2 employee contributing to a typical 401(k) can defer up to $24,500/year (2026). If they're over 50, add another $8,000 catch-up. That's it.

A self-employed person using the right retirement vehicle can contribute up to $72,000/year (2026), or $80,000 if over 50. That's three times the employee limit.

Why does this matter?

• Contributions are tax-deductible — they reduce your taxable income today
• Investments grow tax-free until retirement
• You're building real wealth, not just spending everything

Most detailers won't hit $72,000 in contributions, but even $10,000-20,000/year makes a significant difference — both in reduced taxes and in long-term wealth building.

Your Two Main Options

Option 1: SEP-IRA (Simplified Employee Pension)

What it is: An IRA that allows large contributions based on self-employment income.

Contribution limit: 25% of net self-employment income, up to $72,000 (2026)

Example:
Net self-employment income: $80,000
Maximum SEP contribution: $80,000 × 25% = $20,000

Pros:

• Very easy to set up (can do online in 15 minutes at Fidelity, Vanguard, Schwab)
• No annual maintenance or filings
• Contributions are tax-deductible
• Can contribute until tax deadline (April 15, or October 15 if extended)
• Flexible — contribute what you can afford each year

Cons:

• Limited to 25% of net income (vs. higher limits with Solo 401(k))
• No Roth option (all contributions are pre-tax)
• If you have employees, you must contribute equally for them (proportionate to wages)

Best for: Solo detailers who want simplicity and don't need to maximize contributions beyond 25% of income.

Option 2: Solo 401(k) (Individual 401(k))

What it is: A 401(k) designed for self-employed individuals with no employees (except a spouse).

Contribution limit: Two components:

• Employee portion: Up to $24,500 (2026), or $32,500 if over 50
• Employer portion: Up to 25% of net self-employment income
• Total: Up to $72,000 (2026), or $80,000 if over 50

Example:
Net self-employment income: $80,000
Employee portion: $24,500
Employer portion (25% of $80K): $20,000
Total possible contribution: $43,000

That's significantly more than the SEP-IRA's $20,000 for the same income.

Pros:

• Higher contribution limits for the same income
• Roth option available (pay taxes now, tax-free in retirement)
• Can take loans from your own account (if plan allows)
• Employee portion is a flat amount, not percentage-based

Cons:

• Slightly more complex to set up
• Annual filings (Form 5500-EZ) required when plan exceeds $250,000
• Must be established by December 31 to contribute for that year
• Cannot have non-spouse employees

Best for: Solo detailers who want to maximize contributions, especially if income is lower (the flat $24,500 employee portion is powerful when 25% of income would be less).

Side-by-Side Comparison

Feature	SEP-IRA	Solo 401(k)
Contribution limit	25% of net income (up to $72K)	$24,500 + 25% of net income (up to $72K)
Roth option	No	Yes
Loan option	No	Yes (if plan allows)
Establishment deadline	Tax deadline (April 15 or ext.)	December 31
Annual filings	None	Form 5500-EZ when >$250K
Setup complexity	Very easy	Slightly more involved
Best for income level	Higher income (25% is substantial)	Any income (flat $24,500 portion helps)

When to Start Contributing

Retirement contributions should come AFTER these financial foundations:

1. Operating buffer (2-4 weeks of expenses) — funded
2. Tax savings (current year quarterly payments) — current
3. Emergency fund (3 months of expenses) — funded or building
4. Then: Retirement contributions

Don't contribute to retirement while struggling to make quarterly tax payments or lacking an emergency fund. Get stable first, then build wealth.

That said, don't wait too long. Every year of compound growth matters. If you're stable and have some runway, even $200-500/month into retirement makes a difference over 20-30 years.

The Tax Benefit in Action

Retirement contributions reduce your taxable income — which reduces both income tax and self-employment tax (for the deductible portion).

Example:

Without retirement contribution:
Net profit: $70,000
Taxable income: $70,000
Estimated federal tax (SE + income): ~$17,500

With $12,000 SEP-IRA contribution:
Net profit: $70,000
Retirement contribution: ($12,000)
Taxable income: $58,000
Estimated federal tax: ~$14,500

Tax savings: ~$3,000
Plus: $12,000 now in your retirement account, growing tax-free

You're essentially getting a 25% discount on your retirement savings (the tax you would have paid goes into your account instead).

Where to Open These Accounts

Major brokerages (all offer SEP-IRA and Solo 401(k)):

• Fidelity: No account minimums, no fees, excellent support
• Vanguard: Low-cost index funds, investor-friendly
• Charles Schwab: Good all-around, no account fees

All three are reputable and straightforward to use. Pick one and open an account online.

How to invest inside the account:

Simple approach: invest in low-cost index funds. A "target date" fund (like Vanguard Target Retirement 2055) automatically adjusts allocation as you age. Or use a simple three-fund portfolio (total US stock, international stock, bonds). Don't overthink it — consistent contributions matter more than perfect investment selection.

Traditional vs. Roth: Which to Choose?

If using a Solo 401(k), you can choose between traditional (pre-tax) and Roth (after-tax) contributions.

Traditional (pre-tax):

• Contributions reduce taxable income today
• Pay taxes on withdrawals in retirement
• Best if you expect to be in a lower tax bracket in retirement

Roth (after-tax):

• No tax deduction today
• Withdrawals in retirement are tax-free
• Best if you expect to be in the same or higher tax bracket in retirement

For most detailers: Traditional makes sense when you're in your peak earning years (reduces taxes when your rate is highest). Roth makes sense when income is lower or you're early in your career.

If unsure, a mix is fine. You don't have to pick just one.