Millions of Americans earn too much to contribute to a Roth IRA directly.
The income limits for 2025 phase out single filers between $150,000 and $165,000, and married couples filing jointly between $236,000 and $246,000.
Once you cross those thresholds, the front door is locked.
There's a legal workaround that's been around since 2010, and it's boring enough that most people never bother with it.
It's called the backdoor Roth IRA, and it boils down to two steps: put money into a traditional IRA, then convert it to a Roth.
Why anyone would jump through those hoops comes down to taxes.
Roth accounts grow tax-free, and withdrawals in retirement don't get taxed either.
A traditional IRA gives you a deduction now but taxes you later.
High earners who expect rising tax rates, or who simply want tax-free income in retirement, often prefer the Roth side of that trade. **The mechanics are simple.
The math isn't always.** You open a traditional IRA and contribute up to the annual limit, which is $7,000 for 2025, or $8,000 if you're 50 or older.
Then you convert that money into a Roth IRA.
You'll owe income tax on any growth that happened before the conversion, but if you convert quickly, that amount is usually small.
If you already hold pre-tax money in a traditional IRA, SEP IRA, or SIMPLE IRA, the IRS doesn't let you convert just the new after-tax dollars.
It treats all your IRA money as one pot and taxes the conversion proportionally.
Someone with $50,000 in a pre-tax traditional IRA who tries to convert $7,000 could end up owing tax on most of it.
The fix many people use is rolling existing pre-tax IRA money into a 401(k) first, which clears the deck.
Not every workplace plan allows that, so it's worth checking before you start. **Two paperwork traps to know about.** The first is Form 8606.
You file it with your tax return to report the nondeductible contribution.
Skip it, and the IRS may treat the money as pre-tax, which creates a tax bill later.
The second is the step transaction doctrine, a legal concept the IRS can use to challenge transactions done in rapid sequence purely for tax avoidance.
In practice, most advisors say waiting a few weeks or months between the contribution and conversion reduces the appearance of a shortcut.
There's also a proposed rule from 2023 that would have banned the backdoor Roth for high earners.
It didn't make it into law, but it's a reminder that this strategy lives in a gray zone.
It's allowed under current rules, but Congress has looked at closing it before. **Who should actually bother.** If you're already maxing out a 401(k) and still have money to invest, this is one of the few remaining tax breaks available to you.
If you're carrying credit card debt at 22% or don't have an emergency fund, that's the better place for your dollars first.
Some brokerages make conversions easy and free.
A few minutes comparing custodians can save you real money on a move you might repeat every year. **Our take:** The backdoor Roth is a legitimate tool, not a loophole that will get you audited.
But it rewards people who read the fine print and keep clean records.
Final Thoughts
If you have existing pre-tax IRA money, talk to a tax professional before converting, because the pro-rata rule can turn a clever move into an unexpected bill.