However, you’ll need to meet the Roth conversion deadline of Dec. 31 in order for your conversion to apply to the current tax year. If you wait until April, your Roth IRA conversion will count toward next year’s taxes instead. Since you’ll have to pay taxes on the amount you convert, it’s important to understand the Roth IRA conversion deadline and how it might impact your tax bill.

Why Would You Do a Roth IRA Conversion?

A Roth IRA comes with benefits that could make a conversion worthwhile. For one, you contribute post-tax dollars to a Roth IRA so you can make tax-free qualified withdrawals in retirement. Paying taxes now instead of later could be advantageous if you’re in a lower tax bracket than you expect to be in the future. Roth IRAs also don’t require minimum distributions like traditional IRAs do. If you don’t need your Roth savings in retirement, you’re allowed to leave the money in your account without penalty, perhaps to pass it down to your beneficiaries.

What’s the Deadline for a Roth IRA Conversion?

The deadline for a Roth IRA conversion is Dec. 31. If you made a conversion anytime between Jan. 1 and Dec. 31, 2021, for example, that conversion would count toward tax year 2021. The federal tax deadline, on the other hand, falls in mid-April. As an example, if you made a contribution to an IRA between Jan. 1 and April 18, 2022, that amount would count toward your 2021 taxes. Because of these different deadlines, it’s possible that your contribution and conversion could apply to two different tax years, even if you do them back to back. For example, a traditional IRA contribution on April 1, 2022, would count toward your 2021 taxes, while a Roth IRA conversion on that same date would apply to your 2022 taxes.

Backdoor Roth Conversions

If your income exceeds the Roth IRA limits set by the IRS ($144,000 for single filers and $214,000 for joint married filers), it’s still possible to contribute by converting or rolling over your money from a traditional IRA or other retirement account. Since there’s no income limits on traditional IRAs—and no limits on Roth IRA conversions—you can convert as much as you like. However, it’s important to be aware of the tax implications of backdoor Roth conversions. Although your traditional IRA contributions are pretax, you’ll need to pay taxes on the amount before transferring it into a Roth account. The money you withdraw may be subject to a pro rata rule, by which the IRS considers some or all of your retirement savings together instead of separating pretax and after-tax dollars. Finally, remember that a Roth IRA conversion only works in one direction. In previous years, you could reverse a conversion via recharacterization, but that option is no longer available. Once your money is in a Roth IRA, you can’t convert it back.

A Note on Withdrawing Your Conversions

Since you contribute post-tax dollars to a Roth IRA, you can take distributions tax-free anytime after the age of 59 ½. In the case of a Roth IRA conversion, however, you must wait five years before you can withdraw your contributions, regardless of age. If you try to take out your money before that time, you’ll be subject to a 10% penalty.

The Bottom Line

Backdoor Roth conversions are legal ways to get around the income limits for Roth IRAs and enjoy the benefits of a Roth account. While you’ll need to pay taxes on the converted amount now, you can enjoy tax-free distributions in retirement. Since the Roth IRA conversion deadline is Dec. 31 for it to apply to the previous tax year, it’s important to consider the tax implications of your conversion upfront. Converting too much at once could bump you into a higher tax bracket and cut into some of your savings. If this is the case, it might be advantageous to convert smaller amounts over several years rather than a large sum all at once. Want to read more content like this? Sign up for The Balance’s newsletter for daily insights, analysis, and financial tips, all delivered straight to your inbox every morning!

Roll over a distribution from a traditional IRA, 401(k), or other retirement account into a Roth IRA. You have 60 days to complete the rollover.Transfer the funds from your traditional account at one financial institution to your Roth account at another institution.Transfer the funds from one account to the other at the same institution.