Do you have to wait two years before rolling a SEP IRA into a 401(k)?

No. The two-year rule applies to SIMPLE IRAs, not SEP IRAs. SEP IRA funds can roll into a solo 401(k) at any time.

Does a rollover count toward the 2026 contribution limit?

No. A rollover is a transfer, not a contribution. The $72,000 annual additions limit for 2026 applies only to new contributions; rolled money does not use up any of it.

Can after-tax SEP IRA money roll into a solo 401(k)?

After-tax IRA amounts cannot roll into a 401(k) pre-tax account. Only pre-tax SEP money moves into the solo 401(k). Designated Roth funds must go to a designated Roth account in the receiving plan.

Can you keep your SEP IRA open after the rollover?

Yes. You can roll everything and shut it down, roll part of it, or keep the SEP intact and maintain both plans. If you contribute to both in the same year, total contributions are aggregated under the $72,000 limit for 2026.

Can You Roll a SEP IRA Into a Solo 401(k)? The Direct Rollover Rules

Q: Can you roll a SEP IRA into a solo 401(k)?

Yes. Pre-tax SEP IRA money can roll into a solo 401(k) by direct rollover, tax-free, as long as the solo 401(k) plan document permits rollovers. Unlike a SIMPLE IRA, there is no two-year waiting period on SEP money.

Guides · Updated October 2026

A SEP IRA is the easiest retirement plan a self-employed person can open, which is why so many people end up with one they have outgrown. It took fifteen minutes at a brokerage, it sat there for years, and now you are eyeing the solo 401(k) for its loan feature or its higher contribution limits. The good news is you do not have to start over. You can roll a SEP IRA into a solo 401(k), tax-free, with none of the waiting periods that trap SIMPLE IRA holders.

Rolling a SEP IRA into a solo 401(k): how it actually works

The move is a direct rollover, custodian to custodian. Your SEP IRA provider sends the pre-tax money straight to the solo 401(k), so you never touch it and no withholding applies. Because the funds are pre-tax on both sides, there is no tax event and no early withdrawal penalty.

Three conditions matter. First, the solo 401(k) has to exist already, with a signed plan document, and that document has to permit rollovers. Most prototype plans from the big brokerages do, but a self-directed plan you drafted yourself might not, so check before you start. Second, you need to be eligible for the solo 401(k) in the first place: self-employment income and no eligible common-law employees other than your spouse. Third, the money has to be pre-tax. After-tax IRA amounts cannot roll into a 401(k) pre-tax account.

The one restriction people expect does not exist here: SIMPLE IRA money cannot leave until two years after the first contribution, but SEP IRA money has no such waiting period.

A worked example: $180,000, age 47, designer

A 47-year-old freelance designer has $180,000 sitting in a SEP IRA from five years of employer contributions, plus she earns $160,000 a year. She opens a solo 401(k) and rolls the full $180,000 in by direct rollover. Zero taxes, zero penalties, and the rollover does not touch her 2026 contribution room, so she can still defer $24,500 as an employee contribution and add the employer contribution on top. What she gains: the $180,000 now lives under 401(k) rules, which means she can borrow up to $50,000 (or 50% of the vested balance) against it if the plan allows loans, something the SEP could never offer.

What changes once the money is inside the 401(k)

This is the part people misunderstand. The rollover does not merge the two plans into some hybrid. The money becomes subject to solo 401(k) rules, not SEP IRA rules. That is the whole point. Inside the 401(k), the former SEP money can be accessed through a participant loan, it can sit alongside Roth contributions, and it is protected by the 401(k) creditor protections, which are generally stronger than IRA protections outside of bankruptcy.

You also get a choice most people miss: you do not have to roll all of it. You can move part of the balance and leave the rest in the SEP. The leftover money keeps its SEP rules, meaning it cannot be touched penalty-free before 59 and a half without an exception.

The backdoor Roth angle. Some people roll SEP money into a solo 401(k) specifically to zero out their traditional IRA balances, which clears the way for clean backdoor Roth IRA conversions with no pro-rata tax. If backdoor Roths are part of your annual routine, a SEP IRA balance is a tax problem every year. Moving it into the 401(k) removes the problem permanently.

When the rollover is not worth doing

Two situations where I would hold off. If you are about to hire your first non-spouse employee, your solo 401(k) eligibility ends anyway, and you will be building the SEP back up or moving to a full employer plan. Rolling into a plan you are about to lose is wasted paperwork. And if your SEP money is already exactly where you want it, with good investments and no need for the loan feature, the rollover buys you nothing except a different account number. Simplicity has value too.

Rolling over and choosing a plan?

Compare what each plan lets you contribute on your own income.

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Frequently asked questions

Can you roll a SEP IRA into a solo 401(k)?

Yes. Pre-tax SEP IRA money rolls into a solo 401(k) by direct rollover, tax-free and penalty-free, provided the solo 401(k) plan document permits rollovers and you are eligible for the plan. Unlike a SIMPLE IRA, there is no two-year waiting period.

Does a rollover count toward the contribution limit?

No. A rollover is a transfer, not a contribution. The $72,000 annual additions limit for 2026 covers only new contributions, so a $180,000 rollover does not reduce your contribution room by a dollar.

Can you keep the SEP IRA open after the rollover?

Yes. You can roll everything, roll part of it, or maintain both plans. If you contribute to both in the same year, the total contributions are aggregated under the $72,000 limit for 2026.

Can after-tax SEP money roll into a solo 401(k)?

No. After-tax IRA amounts cannot roll into a 401(k). Only the pre-tax portion of a SEP IRA moves in. If you have designated Roth 401(k) money, it must land in a designated Roth account inside the receiving plan.

Why roll a SEP into a solo 401(k) instead of a traditional IRA?

The two most common reasons: access to the solo 401(k) loan feature, and clearing traditional IRA balances so backdoor Roth conversions stay clean of the pro-rata rule. A traditional IRA rollover achieves neither.

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