Can You Roll a 403(b) Into a 401(k)? Rules, Steps, and Loans

You can roll a 403(b) into a 401(k) as long as your 403(b) funds are eligible for distribution and the receiving 401(k) plan is willing to accept the transfer.1Internal Revenue Service. Rollover Chart Both account types hold pre-tax retirement dollars, so the IRS lets you move money between them without triggering income tax, provided you follow the rules below. The cleanest way to do it is a direct trustee-to-trustee transfer.

When Your 403(b) Money Is Available

A 403(b) will not release your balance for a rollover unless a specific event has occurred. The qualifying events are:2Internal Revenue Service. Retirement Plans FAQs Regarding 403(b) Tax-Sheltered Annuity Plans

  • Severance from the employer sponsoring the 403(b)
  • Reaching age 59½
  • Disability
  • Death (the beneficiary receives the account)
  • Qualifying financial hardship (though hardship distributions themselves cannot be rolled over)

If you are still working for the nonprofit, school district, or other tax-exempt employer sponsoring the plan and you are under 59½, the plan will typically hold onto your money. The usual trigger for a 403(b)-to-401(k) rollover is leaving that employer for a private-sector job.

Confirm the New 401(k) Will Accept It

Federal law does not force any 401(k) to accept incoming rollovers. Each plan sponsor decides whether to allow them and from which types of accounts.3eCFR. 26 CFR 1.401(a)(31)-1 – Requirement to Offer Direct Rollover of Eligible Rollover Distributions Some plans take rollovers only from other 401(k) accounts and refuse 403(b) or governmental 457(b) money.

Check the Summary Plan Description for your new 401(k) and look for “403(b)” or “tax-sheltered annuity” in the list of accepted sources. If it isn’t clear, ask HR or the plan’s third-party administrator before you start any paperwork. If the plan document doesn’t authorize 403(b) rollovers, the custodian legally can’t accept them.

If the new 401(k) won’t take it, you can roll the funds into a traditional IRA instead. Pre-tax 403(b) assets move to a traditional IRA on the same tax-deferred basis, and IRAs generally offer broader investment choices.1Internal Revenue Service. Rollover Chart The trade-off is that IRAs don’t get the same creditor protection as ERISA-covered employer plans, though rollover IRAs are protected in bankruptcy.

Direct Rollover Versus 60-Day Rollover

The IRS treats an eligible distribution from a 403(b) as an “eligible rollover distribution,” meaning it can move to another qualified plan without being taxed.4Office of the Law Revision Counsel. 26 USC 402 – Taxability of Beneficiary of Employees Trust How you move it matters.

Direct Rollover

A direct rollover, also called a trustee-to-trustee transfer, sends your 403(b) balance straight to the new 401(k) custodian. You never touch the money. This route avoids the 20% mandatory federal income tax withholding that applies to retirement plan distributions paid to the participant.5Office of the Law Revision Counsel. 26 USC 3405 – Special Rules for Pensions, Annuities, and Certain Other Deferred Income For most people this is the only sensible option.

Indirect (60-Day) Rollover

If the 403(b) provider issues the check to you, you have 60 days from receipt to deposit the funds into the new plan.4Office of the Law Revision Counsel. 26 USC 402 – Taxability of Beneficiary of Employees Trust Miss the deadline and the entire distribution becomes taxable income for the year, plus a 10% early withdrawal penalty if you are under 59½.6Office of the Law Revision Counsel. 26 USC 72 – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts

There’s also a cash-flow trap. The 403(b) provider must withhold 20% of the distribution for federal taxes before handing you the check.7eCFR. 26 CFR 31.3405(c)-1 – Withholding on Eligible Rollover Distributions To roll over the full original balance and avoid a taxable shortfall, you have to make up that 20% out of your own pocket when you deposit the money into the new plan. You claim the withheld amount back as a tax credit at filing time.8Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions

If You Miss the 60-Day Window

If circumstances outside your control cause a late deposit, such as serious illness, a postal error, or a natural disaster, the IRS may allow a waiver. Under Revenue Procedure 2020-46, you can self-certify to the receiving plan using a model letter, and the plan can accept the late deposit without a private letter ruling.9Internal Revenue Service. Accepting Late Rollover Contributions Self-certification only covers the specific qualifying reasons listed in that revenue procedure.

What Doesn’t Come Along

Not every dollar in the account is eligible.

  • Required minimum distributions cannot be rolled over. Once you reach age 73, you must take that year’s RMD before rolling over anything else. Missing an RMD triggers a 25% excise tax, which drops to 10% if corrected within two years.10Internal Revenue Service. Retirement Plan and IRA Required Minimum Distributions FAQs
  • Hardship distributions from your 403(b) cannot be rolled into a 401(k) or any other qualified plan.11Internal Revenue Service. Retirement Plans FAQs Regarding Hardship Distributions
  • Designated Roth 403(b) contributions can only move to another designated Roth account or a Roth IRA, and the receiving plan must specifically accept designated Roth rollovers. The nontaxable Roth portion has to go by direct trustee-to-trustee transfer; a 60-day rollover isn’t allowed for it.1Internal Revenue Service. Rollover Chart

Outstanding 403(b) Loans

If you have an unpaid loan when you leave the employer, the plan typically offsets it, reducing your balance by the loan amount and treating that reduction as a distribution. Loan offset amounts are eligible rollover distributions, so you can deposit an equivalent amount into the new 401(k) or an IRA to keep it tax-free. For a qualified plan loan offset tied to separation from service or plan termination, you have until your tax filing due date for that year, including extensions, to complete the rollover.12Internal Revenue Service. Plan Loan Offsets You’ll need cash on hand equal to the offset amount, since the original funds were already spent.

One boundary worth flagging: if your 403(b) is subject to ERISA’s joint and survivor annuity rules, your spouse may need to give written, witnessed consent before a lump-sum rollover. Many defined contribution plans don’t offer an annuity option and skip this requirement, but check your Summary Plan Description or ask the plan administrator.

How to Complete the Rollover

Once you’ve confirmed you have a qualifying event and the new 401(k) accepts 403(b) money, the mechanics are straightforward.

  • Gather your 403(b) account number and the receiving plan’s custodian name, address, account or trust number, and EIN if requested.
  • Request distribution paperwork from your 403(b) provider and select the direct rollover option.
  • On the payee line, have the check made payable to the new custodian “for the benefit of” (FBO) your name and account number. A check made payable directly to you triggers the 20% withholding and starts the 60-day clock.
  • Mark the withholding section to indicate a direct rollover, not a taxable distribution.
  • Choose electronic transfer where available; it’s faster and there’s no check to lose. If a paper check is issued and mailed to you, forward it promptly to the new custodian.
  • Ask whether the receiving plan requires a Letter of Acceptance. Some 403(b) providers won’t release funds without one.

Electronic transfers usually complete in a few business days. Paper checks take longer. Your money is out of the market while it’s in transit, so time the request when you’re comfortable being uninvested for a short window.

Verify the Transfer and Check Your Tax Forms

After the paperwork goes in, watch both accounts. The old 403(b) balance should go to zero and the new 401(k) should show a matching credit. If nothing appears within a few weeks, call the receiving plan’s administrator.

Your former 403(b) provider will send Form 1099-R for the year the distribution happened. For a direct rollover, box 7 should show distribution code G, meaning a nontaxable direct rollover to a qualified plan.13Internal Revenue Service. 2025 Instructions for Forms 1099-R and 5498 If you see code 1 (early distribution) or any other code, contact the provider for a corrected form before you file. Keep the confirmation letters, distribution statements, and deposit receipts. Those records are your proof the transfer was tax-free if the IRS ever asks.