Yes, you can move 401k money to a Roth IRA, but the rules depend on whether you still work for the employer and how much tax you owe

You can transfer money from a 401k to a Roth IRA in two main ways: a direct rollover (the money moves between accounts without you touching it) or an indirect rollover (you receive a check and deposit it yourself within 60 days). The catch is that any pre-tax money you move becomes taxable income in the year you move it, because Roth IRAs hold after-tax dollars. If your 401k contains $50,000 in pre-tax contributions, you will owe income tax on that $50,000 when you roll it over.

Whether you can do this at all depends on your employment status. If you still work for the company that sponsors your 401k, most plans do not allow rollovers until you leave the job, turn 59½, or experience a hardship withdrawal. If you have already left the employer, you can roll over the account anytime. If you are still employed but your plan allows "in-service rollovers," you may be able to move the money while still working there — ask your plan administrator.

Key Takeaways

  • Rolling a 401k to a Roth IRA triggers income tax on all pre-tax money you move, because Roth accounts hold after-tax dollars.
  • If you still work for the employer, most 401k plans do not permit rollovers until you leave, reach 59½, or meet a hardship rule.
  • A direct rollover (money moves between institutions) avoids the 60-day deadline and withholding penalties that come with an indirect rollover.
  • You can roll over only the amount that fits within the annual Roth IRA contribution limit if you want to avoid excess contribution penalties.
  • If your 401k holds both pre-tax and after-tax money, the IRS pro-rata rule means you cannot separate them — part of any rollover will be taxable.

How the tax bill works when you roll over pre-tax money

When you move pre-tax 401k money to a Roth IRA, the IRS treats it as a taxable conversion. The amount you roll over is added to your income for that tax year. If you roll over $40,000 and your ordinary income is $60,000, your taxable income becomes $100,000, and you pay tax at whatever rate applies to that higher amount.

You do not pay the tax upfront — you pay it when you file your tax return the following year. This means you need to have cash available to cover the tax bill, or you can have the plan withhold a percentage before sending you the money. If you do an indirect rollover and do not have the withholding taken out, you still owe the tax even though you did not receive the full amount.

After-tax contributions in your 401k (money you already paid income tax on) can roll over to a Roth IRA without creating a new tax bill, because you have already paid tax on those dollars. However, the IRS pro-rata rule complicates this: if your 401k holds both pre-tax and after-tax money, any rollover is treated as a proportional mix of both. You cannot cherry-pick only the after-tax portion to avoid taxes.

Direct rollover versus indirect rollover: which route to use

A direct rollover means your 401k plan administrator sends the money straight to your Roth IRA custodian (usually a bank or brokerage). You never see the check. This method avoids two problems: the 60-day deadline and mandatory withholding. The IRS gives you 60 days to complete an indirect rollover, and if you miss that window, the money is treated as a distribution and you owe tax plus a 10% early withdrawal penalty if you are under 59½.

An indirect rollover means the plan sends you a check. The plan is required to withhold 20% for federal income tax, even if you plan to roll the full amount into the Roth IRA. If you roll over $40,000 indirectly, you receive $32,000 and the plan withholds $8,000. To complete the rollover without penalties, you must deposit the full $40,000 into the Roth IRA within 60 days — which means you have to cover the $8,000 withholding from your own money. You will get that $8,000 back as a tax credit when you file your return, but you have to pay it upfront.

For most people, a direct rollover is simpler and safer. Contact your 401k plan administrator and ask them to initiate a direct rollover to your Roth IRA. Provide them with your Roth IRA custodian's name, your account number, and the custodian's routing information. The transfer typically takes one to two weeks.

Contribution limits and excess contribution penalties

Roth IRAs have annual contribution limits set by the IRS. For 2024, the limit is $7,000 per year (or $8,000 if you are 50 or older). If you roll over more than this amount in a single year, the excess is subject to a 6% penalty tax each year it remains in the account.

However, rollovers are sometimes treated differently from regular contributions depending on your plan and custodian. Some custodians allow you to roll over any amount without hitting the contribution limit, while others count the rollover against your annual limit. Before you roll over, ask your Roth IRA custodian whether the rollover counts toward your contribution limit for that year. If it does and you are rolling over more than the limit, you may need to split the rollover across two tax years or accept the excess contribution penalty.

The pro-rata rule: why you cannot separate pre-tax and after-tax money

If your 401k contains both pre-tax contributions (employer matches, deferrals you did not pay tax on) and after-tax contributions (money you already paid income tax on), the IRS pro-rata rule applies to any rollover. This rule treats all your 401k money as a single pool, and any rollover is a proportional mix of pre-tax and after-tax dollars.

For example, if your 401k holds $60,000 in pre-tax money and $40,000 in after-tax money ($100,000 total), and you roll over $50,000, the IRS considers $30,000 of that rollover to be pre-tax (60% of the total) and $20,000 to be after-tax (40% of the total). You owe income tax on the $30,000 pre-tax portion, even if you intended to roll over only the after-tax portion. You cannot instruct the plan to send only the after-tax money and avoid this rule.

The pro-rata rule also applies if you have other traditional IRAs, SEP IRAs, or SIMPLE IRAs. The IRS counts all of these accounts together when calculating the ratio. If you want to avoid the pro-rata rule, some people keep their pre-tax 401k money in the 401k and roll only after-tax money to a Roth IRA, but this requires your plan to allow separate accounting and your custodian to accept it.

When you can roll over while still employed

Most 401k plans do not allow rollovers until you leave the employer. However, some plans permit in-service rollovers or in-service distributions, which let you move money out while you are still working there. The rules vary by plan, so you need to check your plan document or ask your plan administrator.

If your plan allows in-service rollovers, you can usually roll over only certain portions of your account — often your own contributions and earnings, but not employer matches. Some plans allow in-service rollovers only after you reach age 59½. If your plan does not allow in-service rollovers, you must wait until you leave the job, retire, or experience a may have access to hardship (such as a medical emergency or imminent foreclosure, depending on the plan).

When you leave your employer, you have the right to roll over your entire 401k balance to an IRA, regardless of the plan's in-service rollover rules. This is one reason people roll over 401k accounts after changing jobs — it gives them more control over the money and often more investment options.

What happens to employer matches and vesting

If your 401k includes employer matching contributions, you can roll over only the portion that is fully vested (that you own outright). Vesting schedules vary by employer, but commonly you become fully vested after three to five years of employment. If you leave before you are fully vested, you forfeit the unvested portion — it stays with the plan and is not rolled over.

When you roll over your 401k, you are moving only your own money and the vested employer contributions. Any unvested match remains in the plan. If you are still employed and your plan allows in-service rollovers, the same vesting rules apply — you can roll over only what you own.

Frequently Asked Questions

Do I have to roll over my entire 401k, or can I roll over just part of it?

You can roll over a partial amount. Your plan administrator can process a rollover of any dollar amount you choose, as long as it does not exceed your account balance. Keep in mind that if your 401k holds both pre-tax and after-tax money, the pro-rata rule applies to whatever portion you roll over.

What if I miss the 60-day deadline on an indirect rollover?

If you receive a check and do not deposit it into a Roth IRA within 60 days, the IRS treats it as a distribution. You owe income tax on the full amount, plus a 10% early withdrawal penalty if you are under 59½. The only exception is a one-time 60-day extension that the IRS may grant in cases of financial hardship, but you must request it in writing.

Can I roll over a 401k to a Roth IRA if I am still making contributions to the 401k?

If your plan allows in-service rollovers, yes. If it does not, you must stop contributing or wait until you leave the employer. Ask your plan administrator whether in-service rollovers are permitted under your specific plan.

Will rolling over my 401k affect my ability to contribute to a Roth IRA that year?

A rollover and a regular contribution are different transactions. You can roll over any amount, but your regular annual contribution is capped at $7,000 (or $8,000 if you are 50 or older). Some custodians count the rollover against this limit and some do not — confirm with your custodian before you roll over.

What if my 401k is with a former employer I no longer have contact with?

Contact your current or former HR department to locate the plan administrator's contact information. If the company no longer exists, the plan administrator should still be managing the account. You can also search the Department of Labor's database of abandoned plans, or contact the IRS for help locating the plan.