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What is a backdoor Roth IRA?
A "backdoor Roth IRA" is a type of conversion that allows people with high incomes to fund a Roth despite IRS income limits.
Basically, you put money you’ve already paid taxes on in a traditional IRA, then convert your contributed funds into a Roth IRA and you’re done. Even though you didn’t qualify to contribute to a Roth, you get to go in the back door anyway, no matter what your income.
That's good news, because your money grows tax-free — and that's a pretty sweet perk when it comes time to take your money out in retirement.
Roth IRA income limits
About those Roth IRA income limits: For 2022 the limit increased to $144,000 for single filers and $214,000 for married individuals filing jointly. For 2021, the government allows only those people with modified adjusted gross incomes below $208,000 (married filing jointly) or $140,000 (single) to contribute to a Roth IRA.
If your income is above the limit, a backdoor Roth might be a good solution for you.
» Learn more: Roth IRA income limits and contribution limits
How to create a backdoor Roth IRA
Here’s a step-by-step guide on how to make a backdoor Roth IRA conversion:
Put money in a traditional IRA account. You might already have an account, or you might need to open one and fund it. (If you need to open an account, see our picks for the best IRA providers.)
Convert your contribution to a Roth IRA. Your IRA administrator will give you the instructions and paperwork. If you don’t already have a Roth IRA, you’ll open a new account during the conversion process.
Prepare to pay taxes. Only post-tax dollars go into Roth IRAs. So if you deducted your traditional IRA contributions and then decide to convert your traditional IRA to a backdoor Roth, you’ll need to give that tax deduction back. When it comes time to file your tax return, be prepared to pay income tax on the money you converted to a Roth. And see below for details on the pro-rata rule, which plays a big part in determining your tax bill.
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Mind the rules
Keep these rules in mind to avoid penalties:
Types of transfers
The conversion needs to be one of the following:
A rollover, where you receive the money from your traditional IRA and deposit it into the Roth IRA within 60 days.
A trustee-to-trustee transfer, where the traditional IRA provider sends the money directly to your Roth IRA provider.
A "same trustee transfer," where your money goes from the traditional IRA to the Roth at the same financial institution.
The pro-rata rule for backdoor Roths
The IRS requires rollovers from traditional IRAs to Roth IRAs to be done pro rata. Here's how it works: When determining your tax bill on a conversion from a traditional IRA to a Roth IRA, the IRS is going to look at all of your traditional IRA accounts combined.
If all of your traditional IRAs combined consist of, say, 70% pre-tax money and 30% after-tax money, that ratio determines what percentage of the money you convert to a Roth is going to be taxable. In this example, no matter how much money you convert or which IRA account you pull the money from, 70% of the amount you convert to the Roth will be taxable. You can't choose to convert only after-tax money; the IRS won't allow it.
And a word about timing: the IRS applies the pro-rata rule to your total IRA balance at year-end, not at the time of conversion.
» Learn more about tax efficient investing
Is a backdoor Roth IRA worth it?
A backdoor Roth IRA is probably a bad idea if ...
The only way you can pay the taxes due is with money from your IRA withdrawal. Not only are you sacrificing any future investment growth on that money, there's also the risk that, if you're under age 59-1/2, you'll owe the 10% early withdrawal penalty on that money.
You'll need the money in five years or less. Money converted from an IRA to a Roth IRA falls under a Roth five-year rule: If you don't wait five years to withdraw it, you could owe taxes and a 10% penalty.
The withdrawal from your IRA will push you into a higher income tax bracket. It's generally a good idea to convert just enough that you're not pushed into paying a higher tax rate that year.
» Learn about backdoor Roth alternatives.