Yes, you can move money from a 401(k) to a Roth IRA, but the process depends on your employment status and the type of 401(k) you have

A 401(k)-to-Roth conversion means taking money from your 401(k) and depositing it into a Roth IRA. The IRS allows this, but you pay income tax on the amount you convert in the year you move it. The rules differ depending on whether you still work for the employer sponsoring the 401(k), whether you've left that job, or whether the 401(k) belongs to a former employer.

The most common path is a rollover: you leave your job, request a distribution from the old 401(k), and deposit it into a Roth IRA within 60 days. You can also convert while still employed at some companies if the plan allows in-service conversions. Either way, you owe federal income tax on the full amount converted, calculated at your tax rate for that year.

Key Takeaways

  • You can convert a 401(k) to a Roth IRA after leaving your job by requesting a distribution and depositing it into a Roth IRA within 60 days, but you must pay income tax on the amount converted.
  • Some employers allow in-service conversions while you are still employed, meaning you can convert without leaving your job, though this depends on the plan's rules.
  • The conversion counts as taxable income in the year you move the money, which may push you into a higher tax bracket and affect other tax benefits like Medicare premiums.
  • If you miss the 60-day window for a rollover, the IRS treats the distribution as a withdrawal and you may owe a 10 percent early withdrawal penalty if you are under 59½.
  • A direct rollover (where the 401(k) trustee sends money straight to the Roth IRA) avoids the 60-day important date and the withholding tax that applies to indirect rollovers.

Converting after you leave your job

Once you separate from an employer, you can roll over the 401(k) balance to a Roth IRA. Contact your 401(k) plan administrator (usually listed on your plan statements or the employer's benefits website) and request a distribution. You have two options: a direct rollover or an indirect rollover.

In a direct rollover, the 401(k) plan sends the money straight to the Roth IRA custodian (such as Vanguard, Fidelity, or Schwab). No tax is withheld, and you avoid the 60-day clock. This is the simpler route and the one the IRS prefers.

In an indirect rollover, the 401(k) plan sends you a check. The plan must withhold 20 percent for federal income tax, so if your balance is $100,000, you receive $80,000. You then deposit that $80,000 into the Roth IRA within 60 days. You still owe tax on the full $100,000 when you file your return, but you only moved $80,000 into the Roth. The $20,000 withheld counts as a distribution, not a rollover contribution. If you cannot deposit the full $100,000 within 60 days, the $20,000 shortfall is treated as a taxable withdrawal.

In-service conversions while still employed

Some 401(k) plans allow in-service conversions, meaning you can convert to a Roth IRA without leaving your job. Whether this is available depends entirely on your employer's plan document. Not all plans offer it, and those that do may have restrictions—for example, some require you to be a certain age or to have worked there for a minimum time.

To learn about your plan allows in-service conversions, contact your plan administrator or check your Summary Plan Description (SPD), a document your employer must provide that explains what the plan allows. If conversions are permitted, you can request one directly through your plan. The money goes to your Roth IRA, and you pay tax on the converted amount that year. You remain employed and continue contributing to the 401(k) if you wish.

Tax consequences of converting

The entire amount you convert is added to your taxable income for that year. If you convert $50,000, you report that $50,000 as income on your tax return, and you owe federal income tax at your marginal rate. This can push you into a higher tax bracket, which affects not only your federal tax bill but also other benefits tied to income thresholds.

Higher income in the conversion year can increase your Medicare premiums (if you are on Medicare), reduce or eliminate education tax credits, trigger the net investment income tax (3.8 percent on certain investment income), and affect the taxability of Social Security benefits. If you are close to income thresholds for other benefits or deductions, a large conversion might cost you more than the tax on the conversion itself.

Some people spread conversions over multiple years to stay in a lower tax bracket. Others convert in a year when their income is already low—such as after retirement or a job loss—to minimize the tax hit. There is no limit on how much you can convert, but the tax bill is your responsibility.

The 60-day rollover window and what happens if you miss it

If you receive an indirect rollover (a check from your 401(k)), you have 60 calendar days to deposit it into the Roth IRA. This important date is strict. If you deposit on day 61, the IRS does not treat it as a rollover. Instead, the full distribution is taxable income, and if you are under 59½, you owe a 10 percent early withdrawal penalty on top of the income tax.

The 60-day clock starts the day you receive the check, not the day the plan sends it. If your plan mails the check and it arrives late, that is not an excuse the IRS recognizes. For this reason, a direct rollover is safer: the money goes straight from the 401(k) trustee to the Roth IRA custodian, and there is no 60-day important date to meet.

If you miss the important date, you can request a waiver from the IRS, but waivers are granted only in narrow circumstances—such as a serious illness, a natural disaster, or an error by a financial institution. Missing the important date because you forgot or were busy does not may have access to.

Pro-rata rule and non-deductible contributions

If you have money in traditional IRAs (not 401(k)s), the pro-rata rule affects how much of your conversion is taxed. The rule says that if you have both pre-tax and after-tax money across all your traditional IRAs, SEP IRAs, and straightforward IRAs, a conversion is treated as coming proportionally from both. You cannot cherry-pick only the after-tax portion to convert tax-free.

For example, if you have $80,000 in pre-tax traditional IRA money and $20,000 in after-tax money (from non-deductible contributions), and you convert $20,000 to a Roth, the IRS treats it as 80 percent pre-tax and 20 percent after-tax. You owe tax on $16,000 of the conversion. This rule applies across all your traditional IRAs combined, not per account.

The pro-rata rule does not explore to 401(k)s themselves—only to traditional IRAs. If your 401(k) contains only pre-tax money, you can convert without worrying about this rule. But if you have both a 401(k) and a traditional IRA, the rule affects the tax bill on any conversion.

Roth conversion ladder and early access to money

Some people use conversions as a strategy to access 401(k) money before age 59½ without the 10 percent early withdrawal penalty. This is called a Roth conversion ladder or backdoor Roth strategy (though the backdoor Roth is a different technique used to bypass income limits).

Here is how it works: you convert money from your 401(k) to a Roth IRA and pay tax on the conversion. You then wait five years (the Roth five-year rule for conversions). After five years, you can withdraw the amount you converted without penalty, even if you are under 59½. The earnings on that conversion remain locked until 59½ or until you meet another exception.

This strategy requires planning and discipline. You must have other money to live on during the five-year wait, and you must track which conversions are which so you know when each five-year period ends. It also requires that you no longer have access to the 401(k) (usually because you left the job), because the strategy does not work if you are still employed and the plan allows loans or distributions.

Frequently Asked Questions

Do I have to convert my entire 401(k) balance at once?

No. You can convert part of your 401(k) and leave the rest in the plan (if your employer allows) or roll the remainder into a traditional IRA. Some people convert in chunks over several years to spread the tax bill across multiple years and stay in a lower tax bracket each year.

What if my 401(k) has employer matching contributions?

Employer matching is pre-tax money, so it is fully taxable when you convert it. You cannot separate it from your own contributions for tax purposes. The entire balance is treated as pre-tax unless you have after-tax contributions documented in your plan records.

Can I convert a 401(k) from a previous employer if I am still working somewhere else?

Yes. You can convert an old 401(k) from a former employer at any time, regardless of your current job. You cannot convert your current employer's 401(k) unless the plan allows in-service conversions, but old plans are always available to roll over.

Will converting a 401(k) to a Roth affect my Social Security benefits?

The conversion itself does not affect Social Security, but the extra income in the conversion year can increase the taxable portion of your benefits if you claim before full retirement age. The IRS counts the conversion as income when determining how much of your Social Security is taxable.

What happens to my 401(k) loan if I convert?

You cannot convert a 401(k) that has an outstanding loan. You must repay the loan first. If you leave your job with an unpaid loan, the plan typically requires you to repay it within 60 days or it is treated as a taxable distribution and you owe the 10 percent early withdrawal penalty if you are under 59½.