Rolling a 401(k) into a SEP IRA is allowed under federal tax law, provided you have a qualifying event that lets the 401(k) release your balance and a SEP IRA open to receive the money. Done as a direct trustee-to-trustee transfer between a traditional 401(k) and a traditional SEP IRA, the move is tax-free and preserves the tax-deferred growth. The traps sit around the edges: the 20% withholding on indirect rollovers, the loss of the age-55 penalty exception once the money leaves the 401(k), employer stock with built-in gains, and unpaid plan loans.
When Your 401(k) Will Release the Money
You generally cannot take money out of a 401(k) while you still work for the sponsoring employer. Federal law requires a triggering event before the plan will pay out.1Office of the Law Revision Counsel. 26 USC 402 – Taxability of Beneficiary of Employees Trust The usual ones:
- Separation from the employer, whether you quit, retire, or are laid off.
- Termination of the 401(k) plan by your employer.
- Reaching age 59½, if the plan allows in-service distributions at that age.
Without one of these, and absent an in-service withdrawal feature, the balance stays in the 401(k).
Opening a SEP IRA to Receive the Funds
A SEP IRA is designed for self-employed people and small business owners, and any business form qualifies, including a sole proprietorship or freelance operation.2Internal Revenue Service. Simplified Employee Pension Plan (SEP) You establish the SEP with a written agreement (the IRS provides model Form 5305-SEP, which you keep in your records rather than file), then open the SEP IRA account itself at a brokerage or bank. You do not need to have made any employer contributions before using it as a rollover destination.
Money rolled in from a 401(k) does not count against the SEP contribution limit. That limit — the lesser of 25% of compensation or $69,000 for 2026, based on compensation of up to $360,000 — applies only to new employer contributions.3Internal Revenue Service. SEP Contribution Limits (Including Grandfathered SARSEPs)4Internal Revenue Service. COLA Increases for Dollar Limitations on Benefits and Contributions
Match the Tax Character of the Money
A traditional (pre-tax) 401(k) rolls into a traditional SEP IRA with no tax due, because both hold pre-tax dollars that get taxed later at withdrawal.5Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions
Roth 401(k) money needs a Roth destination. The SECURE 2.0 Act (Section 601) authorized Roth SEP IRAs, so a Roth 401(k) can now roll into a Roth SEP IRA tax-free.6Internal Revenue Service. SECURE 2.0 Act Impacts How Businesses Complete Forms W-2 Not every custodian offers a Roth SEP IRA yet; if yours does not, a standard Roth IRA is the usual tax-free destination for Roth 401(k) funds.
Rolling a traditional 401(k) into a Roth SEP IRA is a conversion. The full pre-tax amount becomes taxable income in the year of the transfer. That can be a reasonable long-term strategy, but the immediate tax bill is real.
Direct Rollover vs. Indirect Rollover
This is the decision that determines whether the process is easy or risky.
Direct Rollover
In a direct rollover, the 401(k) plan sends the money straight to your SEP IRA custodian. You never take possession. Nothing is withheld, and no 60-day clock runs. Even if the plan mails a check to your address, the check is made payable to the receiving institution, not to you, so the IRS treats it as a trustee-to-trustee transfer.7Internal Revenue Service. Topic No. 413, Rollovers From Retirement Plans
Indirect Rollover
In an indirect rollover, the 401(k) pays you. Two things happen immediately. The plan administrator withholds 20% of the taxable distribution for federal income tax.5Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions And you have 60 days from receipt to deposit the full original balance, including the withheld 20%, into your SEP IRA.8Internal Revenue Service. href=”https://www.irs.gov/retirement-plans/retirement-plans-faqs-relating-to-waivers-of-the-60-day-rollover-requirement” target=”_blank” rel=”noopener”>Retirement Plans FAQs Relating to Waivers of the 60-Day Rollover Requirement
To replace the withheld amount, you use personal cash. Say your 401(k) distributes $50,000. The plan withholds $10,000 and sends you $40,000. To roll the whole amount over, you deposit $50,000 into the SEP IRA: the $40,000 check plus $10,000 from your own funds. You recover the $10,000 as a credit when you file your tax return. Deposit only the $40,000 and the $10,000 shortfall becomes a taxable distribution, and if you are under 59½ it can also carry the 10% early withdrawal penalty.5Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions
Miss the 60-day deadline and the entire distribution becomes taxable, plus the possible 10% penalty. The IRS can waive the deadline in narrow situations like hospitalization or a natural disaster, but a waiver is not guaranteed.9Internal Revenue Service. Retirement Plans FAQs Relating to Waivers of the 60-Day Rollover Requirement A direct rollover avoids all of it.
How to Execute the Transfer
Once you commit to a direct rollover, the mechanics involve coordination between two institutions. You will need:
- Your 401(k) account number, the plan administrator’s contact information, and the plan’s rollover election or distribution request form.
- Your SEP IRA account number, the receiving institution’s name, and its wiring or mailing instructions for incoming rollovers.
- A letter of acceptance from the SEP IRA custodian if your 401(k) administrator requires one. Most custodians generate it on request.
On the rollover election form, list the payee as the receiving institution “For the Benefit Of” (FBO) your name, for example “Schwab FBO Jane Smith.” That phrasing signals a qualified transfer rather than a payment to you. You can roll over the full balance or a partial amount.
Transfers usually take two to four weeks to settle. Your 401(k) plan may charge a distribution or administrative fee. Once the money is in the SEP IRA, it keeps growing tax-deferred until you take distributions.
Reporting the Rollover on Your Tax Return
Your former 401(k) plan will send you and the IRS a Form 1099-R for the distribution.10Internal Revenue Service. About Form 1099-R, Distributions From Pensions, Annuities, Retirement or Profit-Sharing Plans, IRAs, Insurance Contracts, Etc. Box 7 carries a distribution code. A direct rollover from a 401(k) to a SEP IRA is Code G, which tells the IRS no tax is due on the transfer.11Internal Revenue Service. Instructions for Forms 1099-R and 5498
Even a fully tax-free rollover still gets reported on your Form 1040. You list the gross distribution and enter zero (or the non-taxable portion) as the taxable amount. Skip the reporting and the IRS may send a notice asking why a large distribution went untaxed.
The Age-55 Penalty Break You Lose by Rolling Over
Withdrawals from a retirement account before age 59½ generally carry a 10% additional tax on top of ordinary income tax.12Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions A completed rollover itself does not trigger it, because the money is not being spent. But later withdrawals from the SEP IRA before 59½ do, unless an exception applies.
The “Rule of 55” exception matters here. If you separate from your employer during or after the year you turn 55, distributions from that employer’s 401(k) are free of the 10% penalty. Public safety employees in governmental plans get the same exception starting at age 50.12Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
The exception applies only to distributions from a qualified employer plan. It does not apply to IRAs, including SEP IRAs.13Office of the Law Revision Counsel. 26 USC 72 – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts If you are between 55 and 59½ and might need the money, rolling into a SEP IRA gives up penalty-free access. You would then have to wait until 59½ or use another exception (such as substantially equal periodic payments). If early access is a real possibility, keep the money in the 401(k), or roll over only the portion you will not need before 59½.
Situations to Clean Up Before You Roll
Outstanding 401(k) Loans
An unpaid 401(k) loan at the time you leave the employer creates a tax problem. You cannot roll a loan balance into an IRA.14Internal Revenue Service. Retirement Plans FAQs Regarding Loans If the plan offsets your account by the unpaid balance, the offset is treated as a distribution, taxable and potentially subject to the 10% penalty if you are under 59½.
When the offset happens because of plan termination or separation from service, the deadline to make the rollover is extended. Instead of 60 days, you have until your tax filing deadline for that year, including extensions.15Internal Revenue Service. Plan Loan Offsets If you can put personal funds equal to the offset amount into your SEP IRA by that date, the offset is treated as a completed rollover and no tax is due on it.
Required Minimum Distributions
If you are 73 or older, take your required minimum distribution (RMD) for the year before rolling over the rest. RMD amounts are not eligible for rollover into another tax-deferred account.16Internal Revenue Service. Retirement Plan and IRA Required Minimum Distributions FAQs Rolling over an amount that includes the RMD creates an excess contribution in the SEP IRA that has to be corrected, with penalties and paperwork attached.
Company Stock in the 401(k)
If your 401(k) holds employer stock, rolling those shares into a SEP IRA can cost a valuable tax break. Under the net unrealized appreciation (NUA) rule, you can pay long-term capital gains rates, rather than ordinary income rates, on the stock’s growth if you take the shares out of the plan as part of a qualifying lump-sum distribution.1Office of the Law Revision Counsel. 26 USC 402 – Taxability of Beneficiary of Employees Trust Once the stock goes into an IRA, NUA is gone, and the full value will eventually be taxed at ordinary income rates. If a meaningful part of your 401(k) is appreciated employer stock, talk to a tax professional before you initiate the rollover.