SEP IRAs and 401(k)s serve different purposes, making direct cost comparison misleading. A SEP IRA rollover typically costs $0–$300 in custodian fees, while 401(k) rollovers range from $0–$500. The real expense difference lies in contribution limits, employer match loss, and ongoing account maintenance. Neither is universally cheaper—cost depends on your employment status, income level, and current account structure.
Understanding SEP IRA and 401(k) Structures
Before comparing costs, you need to understand what you’re actually rolling over. A 401(k) is an employer-sponsored plan where both employees and employers can contribute. A SEP IRA (Simplified Employee Pension) is a self-employed retirement account that only business owners and self-employed individuals can open.
These are fundamentally different account types, so a direct “rollover” comparison gets complicated. You can roll a 401(k) into an IRA (including a SEP IRA if you’re self-employed), but you cannot roll a SEP IRA into a 401(k) unless your employer offers a plan and accepts SEP rollovers—which is rare.
The cost analysis therefore depends on your situation: Are you leaving an employer and considering where to move your 401(k)? Or are you self-employed and choosing between a 401(k) and a SEP IRA from scratch?
401(k) Rollover Costs Broken Down
Rolling a 401(k) to another account involves several potential expenses:
Custodian Transfer Fees
Most financial institutions charge $0–$300 to receive a 401(k) rollover. Some brokers like Fidelity, Vanguard, and Charles Schwab charge zero transfer fees for new rollover IRAs. Smaller custodians or regional banks may charge $100–$300 for account setup and transfer processing.
Direct Rollover vs. Indirect Rollover Taxes
A direct (trustee-to-trustee) rollover has no tax withholding and costs nothing beyond custodian fees. An indirect rollover—where you receive the check yourself—triggers mandatory 20% federal tax withholding on the amount distributed. If you don’t redeposit the full amount within 60 days, the withheld portion becomes taxable income and may incur a 10% early withdrawal penalty if you’re under 59½.
Example: A $100,000 401(k) indirect rollover results in $80,000 paid to you (20% withheld = $20,000). If you only deposit $80,000 back, the $20,000 is taxed as income that year plus potential penalties.
Investment Changes
Moving a 401(k) often means changing investments. If you’re moving from company stock to mutual funds or ETFs, you might trigger capital gains taxes if the stock has appreciated. This isn’t a direct “fee” but a real cost to factor in.
SEP IRA Costs Compared
A SEP IRA has lower setup and maintenance costs than a 401(k), but this only matters if you’re self-employed or own a business.
Initial Setup Fees
Opening a SEP IRA typically costs $0–$100. Custodians like Fidelity and Vanguard charge nothing. Some banks charge a small setup fee of $50–$100.
Annual Maintenance Costs
SEP IRAs generally have no annual maintenance fees at major custodians. Some small financial institutions charge $25–$50 yearly, though this is becoming rare in 2026.
No Employer Match Loss
If you’re rolling a 401(k) away from an employer plan, you lose access to any employer matching contributions. A SEP IRA has no employer match mechanism—you fund it yourself. If your current employer matches contributions, rolling to a SEP IRA costs you the future match value, which can be substantial.
Contribution Limit Differences
For 2026, a 401(k) allows up to $23,500 in employee deferrals (plus $7,500 catch-up if 50+). A SEP IRA allows up to 25% of net self-employment income or $69,000, whichever is less. If you’re self-employed with high income, a SEP IRA may allow larger contributions, reducing the cost per dollar saved.
Which Rollover Costs Less in Your Situation?
Scenario 1: Leaving an Employer
If you’re rolling a 401(k) from a former employer, the direct costs are minimal ($0–$300 in custodian fees). Use a direct rollover to avoid the 20% withholding tax. The real cost is losing employer match if you move to a SEP IRA—but you can only open a SEP IRA if you’re self-employed.
If you’re moving to another employer’s 401(k), costs are similar ($0–$300). If you’re moving to a traditional IRA, costs are identical but you lose access to 401(k) bankruptcy protection and certain creditor shielding that IRAs don’t provide.
Scenario 2: Self-Employed Choosing an Account Type
If you’re self-employed, you’re choosing between a SEP IRA and a solo 401(k), not rolling from one to the other. A SEP IRA costs $0–$100 to open and $0–$50 yearly. A solo 401(k) costs $200–$500 to set up and $100–$300 annually for administration.
For simple self-employment income under $60,000, a SEP IRA is cheaper. For income above $100,000 or if you want to borrow against retirement savings, a solo 401(k) may be worth the higher cost.
Scenario 3: Rolling a SEP IRA
If you already have a SEP IRA and want to move it, expect $0–$300 in transfer fees. Rolling to another IRA costs the same as rolling a 401(k). You cannot roll a SEP IRA into a 401(k) without specific employer plan language allowing it.
Use Our Free Calculators
To estimate your specific rollover costs and tax implications, use these tools:
- 401(k) Rollover Calculator — Calculate total transfer costs, taxes, and account value after rollover.
- Early Withdrawal Penalty Calculator — Estimate 10% penalty and taxes if an indirect rollover fails.
- Traditional vs Roth IRA Calculator — Compare tax implications of rolling to traditional vs Roth accounts.
Frequently Asked Questions
Do I pay taxes when rolling a 401(k) to a SEP IRA?
No, if you use a direct (trustee-to-trustee) rollover. The money moves directly between custodians with no tax event. If you take an indirect rollover (receiving the check yourself), 20% is withheld for federal taxes, and the full amount becomes taxable if not redeposited within 60 days.
Can I roll a SEP IRA into a 401(k)?
Technically yes, but only if your employer’s 401(k) plan explicitly allows non-Roth IRA rollovers. Most 401(k) plans do not accept SEP IRA rollovers. Check your plan’s summary plan description (SPD) or ask your plan administrator.
What’s the cheapest way to roll over a 401(k)?
A direct rollover to a major custodian (Fidelity, Vanguard, Charles Schwab) with zero transfer fees is cheapest. Avoid indirect rollovers unless necessary, as the 20% withholding creates a tax liability. Request the direct rollover in writing from your current 401(k) plan administrator.
Does a SEP IRA have annual fees?
Most major custodians charge zero annual maintenance fees for SEP IRAs in 2026. Some regional banks or smaller institutions charge $25–$50 yearly. Check your custodian’s fee schedule before opening an account.
How long does a 401(k) rollover take?
Direct rollovers typically complete within 5–10 business days. Some custodians take up to 2–3 weeks if paperwork requires manual processing. Indirect rollovers depend on how quickly you redeposit; the 60-day deadline is firm, and missing it creates permanent tax consequences.
Written by James Whitfield | Updated April 2026 | For educational purposes only. Always consult a qualified financial professional before making retirement decisions.