Moving Money From an IRA Into Your 401(k): What You Need to Know

Yes, you can roll an IRA into a 401(k), but your plan has to allow it and your IRA has to meet specific rules

A rollover moves money from one retirement account to another without triggering taxes or early withdrawal penalties, as long as you follow the IRS rules. You can move money from a traditional IRA into a 401(k) if your employer's plan permits it — but not all plans do. Rolling a Roth IRA into a 401(k) is also possible, though it works differently and has fewer reasons to do it. The key is that your 401(k) plan document must explicitly allow IRA rollovers, and you must complete the transfer in the right way.

The main reason people do this is to consolidate accounts, reduce fees, or take out a loan — 401(k)s allow loans, IRAs do not. Another reason is to avoid the "pro-rata rule," a tax trap that affects people with both traditional IRAs and 401(k)s who later convert to Roth. But rolling over is not automatic, and mistakes can turn a tax-free move into a taxable event.

Key Takeaways

Your employer's 401(k) plan must allow IRA rollovers in its written plan document — check with your HR or benefits department before you start.
You can roll a traditional IRA into a traditional 401(k) and a Roth IRA into a Roth 401(k), but mixing account types triggers taxes you cannot undo.
A direct rollover (trustee-to-trustee transfer) is the safest method because the money never touches your hands and no taxes are withheld.
If you do an indirect rollover, you have 60 days to deposit the money into the 401(k), and your IRA custodian will withhold 20 percent for taxes even if you plan to roll it all over.
Rolling over does not change your contribution limits — you still cannot put in more than the annual 401(k) limit, even if you have extra money in the IRA.

Check whether your 401(k) plan actually allows IRA rollovers

Not every 401(k) accepts rollovers from IRAs. Some plans, especially those at smaller employers, do not allow them. Your plan's rules are written in a document called the plan document, which your HR or benefits department keeps on file. You need to ask them directly: "Does our 401(k) plan allow rollovers from IRAs?" Do not assume the answer is yes.

If your plan does allow rollovers, ask whether there are any restrictions — for example, some plans only accept rollovers from traditional IRAs, not Roth IRAs. Get the answer in writing if you can, because you will need to know this before you contact your IRA custodian. If your current plan does not allow it but you are changing jobs, your new employer's plan might, so this is worth revisiting if your situation changes.

Traditional IRA to traditional 401(k) is the straightforward path

Rolling a traditional IRA into a traditional 401(k) is the simplest type of rollover because both accounts hold pre-tax money. The money moves without taxes, and you do not owe anything to the IRS. The balance in your IRA straightforward becomes part of your 401(k) balance, and your 401(k) investment options and rules take over from that point forward.

This rollover is useful if you want to consolidate accounts, reduce the number of statements you receive, or lower your fees — 401(k)s sometimes charge less per dollar than IRAs, depending on your provider. It also matters if you later want to take out a loan: 401(k)s allow loans, but IRAs do not. And it can help you avoid the pro-rata rule if you have other traditional IRAs and plan to do a Roth conversion later.

Roth IRA to Roth 401(k) works the same way, but fewer plans offer it

You can roll a Roth IRA into a Roth 401(k) using the same process as a traditional rollover. The money is already after-tax, so no taxes are owed. However, far fewer employers offer a Roth 401(k) option, so this path is less common. If your plan does have a Roth 401(k), the rollover itself is straightforward.

The main reason to do this is the same as with traditional accounts: consolidation or to access a 401(k) loan. Roth IRAs have no required minimum distributions in your lifetime, but Roth 401(k)s do, so rolling over actually creates a new requirement you did not have before. For that reason, many people keep their Roth IRA separate and only roll over if they need a loan or are consolidating many accounts.

Do not mix account types — traditional into Roth or vice versa

You cannot roll a traditional IRA into a Roth 401(k) or a Roth IRA into a traditional 401(k). If you try, the IRS treats it as a taxable conversion, and you will owe income tax on the entire amount. This is not reversible, so the mistake is expensive. Always match the account type: traditional to traditional, Roth to Roth.

If you want to move money from a traditional IRA into a Roth account, that is a separate process called a Roth conversion, and it is intentional and taxable. A rollover is not the right tool for that, and your IRA custodian or 401(k) administrator will catch the mismatch if you try. But it is your responsibility to ask the right questions before you start, so confirm the account types match before you give any instructions.

Use a direct rollover (trustee-to-trustee transfer) to avoid taxes and mistakes

A direct rollover means the money moves straight from your IRA custodian to your 401(k) plan administrator. You never touch the money, and no taxes are withheld. This is the safest method because there is no 60-day important date, no withholding, and no way to accidentally miss the window and owe taxes.

To do a direct rollover, contact your IRA custodian (the bank, brokerage, or fund company that holds your IRA) and tell them you want to roll over to your 401(k). They will ask for your 401(k) plan administrator's name and address, and sometimes a plan number. They will then send the money directly to the 401(k) plan. The whole process usually takes one to two weeks. Your 401(k) administrator will confirm when the money arrives and add it to your account.

An indirect rollover gives you 60 days but costs you 20 percent withholding

An indirect rollover means your IRA custodian sends the money to you, and you deposit it into your 401(k) within 60 days. This method has two major drawbacks: your custodian must withhold 20 percent for federal taxes, and you have a strict 60-day important date.

Here is how it works in practice. You ask your IRA custodian for a distribution. They send you a check for 80 percent of your balance and withhold 20 percent. If your IRA has $10,000, you receive $8,000 and the custodian withholds $2,000. You then have 60 days to deposit the $8,000 into your 401(k). But here is the trap: if you want the full $10,000 to roll over tax-free, you have to come up with the $2,000 from your own pocket and deposit that too, or the $2,000 becomes taxable income. If you miss the 60-day important date, the entire amount becomes taxable, and if you are under 59½, you also owe a 10 percent early withdrawal penalty. Avoid this method if you can — use a direct rollover instead.

Your contribution limits do not change after a rollover

Rolling money into your 401(k) does not increase how much you can contribute each year. The annual 401(k) contribution limit (which varies by year and is set by the IRS) applies to new contributions you make from your paycheck, not to rollover money. Rollover money is treated separately and does not count against that limit.

This means if you roll over a large IRA balance, you still cannot put in more than the annual limit from your paycheck. For example, if the 2024 limit is $23,500 and you roll over $50,000, you can still only contribute $23,500 from your salary that year. The rollover and your paycheck contributions are two separate buckets.

Frequently Asked Questions

What happens to my IRA after I roll it over?

The IRA account itself remains open but empty. You can close it, or you can leave it open and use it for future contributions or rollovers. Some people keep an old IRA open to preserve the record of contributions for tax purposes, especially if they have made nondeductible contributions in the past.

Can I roll over just part of my IRA?

Yes. You can roll over any amount you choose, and the rest stays in the IRA. This is useful if you want to consolidate some money but keep other investments separate. Just tell your IRA custodian the exact amount you want to transfer.

What if I have multiple IRAs?

You can roll over one IRA, some of them, or all of them into your 401(k). Each rollover is a separate transaction. However, if you have multiple IRAs and you do an indirect rollover, the 60-day clock applies to all of them together — you cannot do one rollover, wait 30 days, and then do another. The IRS counts all indirect rollovers in a 12-month period as one transaction for the 60-day rule.

Do I owe taxes on a rollover?

No, not if you do it correctly. A direct rollover is never taxable. An indirect rollover is only taxable if you miss the 60-day important date or do not deposit the full amount (including the 20 percent withholding) into the 401(k). Mixing account types (traditional to Roth) is taxable and cannot be undone.

Can I roll over my 401(k) into an IRA later?

Yes. After you leave your job, you can roll your 401(k) into an IRA using the same direct or indirect rollover methods. This is called a "reverse rollover" and works the same way. Many people do this to consolidate accounts or to access more investment options.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.