Yes, you can roll a 403(b) into a 401(k), but your new employer's plan must accept incoming rollovers

A rollover moves money from your 403(b) directly to a 401(k) without triggering taxes or penalties, as long as you follow IRS rules. The process is straightforward in concept: your 403(b) custodian sends the funds to your new 401(k) plan. In practice, the limiting factor is whether your new employer's 401(k) plan permits incoming rollovers — many do, but not all.

The most common reason to roll over is changing jobs. You leave an employer with a 403(b), move to one with a 401(k), and want to consolidate retirement savings in one place. A rollover also lets you move money out of a 403(b) you no longer use, reducing the number of accounts you manage and potentially lowering fees.

If your new employer's 401(k) does not accept rollovers, you have a backup option: rolling into an IRA (Individual Retirement Account) instead. An IRA accepts rollovers from almost any retirement plan and gives you more investment choices than most workplace plans.

Key Takeaways

  • Your new employer's 401(k) plan must explicitly allow incoming rollovers; contact the plan administrator or your HR department to confirm before you start the process.
  • A direct rollover — where your 403(b) custodian sends funds straight to the 401(k) — avoids taxes and the 60-day important date that applies to indirect rollovers.
  • If your new 401(k) does not accept rollovers, you can roll the 403(b) into a traditional IRA instead, which accepts rollovers from nearly all retirement plans.
  • The rollover does not count as income and does not trigger taxes in the year you move the money, as long as you use a direct rollover method.
  • You must complete the rollover within 60 days if you take the money yourself (indirect rollover), or the IRS treats the withdrawal as a taxable distribution.

How a direct rollover works and why it matters

A direct rollover is the safest method. Your 403(b) custodian (the company holding your account) sends the money directly to your new 401(k) plan. You never touch the funds. The IRS does not count this as a distribution, so no taxes are withheld and no 60-day clock starts ticking.

To start a direct rollover, contact your 403(b) custodian and ask for a rollover request form. You will need to provide the name of your new 401(k) plan, the plan number (your HR department has this), and the account number where the money should land. The custodian handles the rest and typically completes the transfer within one to two weeks.

An indirect rollover is riskier. Your 403(b) custodian sends the check to you, and you deposit it into your 401(k) within 60 days. The custodian must withhold 20 percent for federal taxes, even though you are rolling the money over. You have to make up that 20 percent from your own pocket if you want to roll the full amount, or you will owe taxes on the withheld portion. Most people use a direct rollover to avoid this complication.

Confirming your new 401(k) accepts rollovers

Before you contact your 403(b) custodian, verify that your new employer's 401(k) plan accepts incoming rollovers. Not every plan does. Call your HR or benefits department and ask directly: "Does this 401(k) plan accept rollovers from other retirement plans?" They can answer in one call.

If the answer is yes, ask for the plan's name and number. You will need both for the rollover request form. Also ask whether the plan accepts rollovers from 403(b)s specifically, since some plans accept rollovers from IRAs but not from other workplace plans. This is rare, but it happens.

If your new 401(k) does not accept rollovers, do not roll the 403(b) into it. Instead, roll it into a traditional IRA. An IRA accepts rollovers from 403(b)s, 401(k)s, and most other retirement plans. You can open an IRA at any bank, brokerage, or investment company — Fidelity, Vanguard, and Schwab are common choices — and the process is the same as a direct rollover to a 401(k).

What happens to loans and outstanding balances

If you have an outstanding loan against your 403(b), you cannot roll the balance into a 401(k). You must repay the loan in full before the rollover. If you leave your job without repaying, the IRS treats the outstanding balance as a taxable distribution, and you owe income tax plus a 10 percent penalty if you are under 59½.

Pay off the loan using your own money, not by borrowing against the 403(b) again. Once the loan is repaid, the remaining balance in your 403(b) is available to roll over.

If your 403(b) has a balance that is not yet vested — meaning your employer has not fully credited it to you — you can still roll over the vested portion. Your 403(b) custodian will separate the vested and unvested amounts and tell you which can be rolled. Unvested money stays in the 403(b) until you become vested or leave the employer.

Tax and penalty consequences of rolling over correctly

A direct rollover has no when ready tax consequences. The money moves from your 403(b) to your 401(k) without being counted as income. You do not owe federal income tax in the year of the rollover, and the 10 percent early withdrawal penalty does not explore, even if you are under 59½.

The tax-deferred status of the money continues in your 401(k). When you eventually withdraw from the 401(k) in retirement, that withdrawal is taxed as ordinary income. If your 403(b) contained pre-tax contributions (the most common type), the rollover preserves that pre-tax status.

If your 403(b) contained Roth contributions (after-tax money), you can roll those into a Roth 401(k) if your new plan offers one. If it does not, you can roll the Roth 403(b) into a Roth IRA instead. Roth money grows tax-free and is not taxed when you withdraw it in retirement, so keeping it in a Roth account preserves that benefit.

Rolling over when you leave your job

You can roll over your 403(b) at any time, but the most common trigger is leaving your job. Once you separate from your employer, you are no longer making contributions to that 403(b), and you may no longer be able to access the plan's investment options or take loans against it.

There is no important date to roll over after you leave. You can wait months or years. However, the longer you wait, the more accounts you have to track. Rolling over soon after you leave simplifies your finances and consolidates your retirement savings in one place.

If you are still employed and want to roll over your 403(b) to a 401(k) at your current employer, check your plan documents. Some plans allow in-service rollovers, but many do not. Your HR department can tell you whether this is an option.

Rolling into an IRA if your 401(k) does not accept rollovers

If your new employer's 401(k) does not accept rollovers, a traditional IRA is your next option. An IRA accepts rollovers from 403(b)s without restriction. You can open an IRA at a bank, brokerage, or investment company and complete a direct rollover in the same way you would to a 401(k).

An IRA often offers more investment choices than a 401(k), since you are not limited to the plan's menu of funds. You can invest in individual stocks, bonds, mutual funds, and ETFs. However, an IRA does not offer the loan feature that some 401(k)s do, so if you think you might need to borrow against your retirement savings, a 401(k) may be preferable.

If you roll a 403(b) into an IRA and later move to an employer with a 401(k) that accepts rollovers, you can roll the IRA into that 401(k). The process is the same as rolling a 403(b) directly.

Frequently Asked Questions

Do I have to roll over my 403(b) when I leave my job?

No. You can leave the money in your old 403(b) if you want, though you typically cannot make new contributions or take loans. Rolling over consolidates your accounts and may reduce fees, but it is not required. Some people keep multiple retirement accounts intentionally.

What if my 403(b) custodian and my new 401(k) plan are at the same company?

The rollover still works the same way. Even if both accounts are at the same financial institution, the 403(b) custodian must process a formal rollover request and move the funds into the 401(k). You cannot straightforward transfer the money yourself.

Can I roll a 403(b) into a Roth 401(k)?

Yes, but it is treated as a conversion. You owe income tax on the pre-tax portion of your 403(b) in the year you roll it over. The after-tax portion (if any) rolls over without additional tax. Ask your HR department whether your 401(k) plan accepts Roth conversions before you start.

What if I have multiple 403(b)s from different employers?

You can roll all of them into one 401(k) or one IRA. Each rollover is a separate transaction, but the process is identical. Contact each 403(b) custodian and request a direct rollover to the same destination account.

How long does a rollover take?

A direct rollover typically takes one to two weeks from the time your 403(b) custodian receives the rollover request. The exact timeline depends on the custodian and the receiving plan. Ask both parties for an estimated completion date when you start the process.