Millions of Americans earn too much to contribute directly to a Roth IRA, thanks to income limits that phase out single filers above $161,000 and married couples filing jointly above $240,000 in 2025.
But a quirk in the tax code lets higher earners get money into a Roth anyway, using what's commonly called a backdoor Roth IRA.
It sounds like a loophole, and technically it is one that Congress has left open for years.
You make a nondeductible contribution to a traditional IRA, up to $7,000 for 2025, or $8,000 if you're 50 or older.
Because you already paid taxes on that money, you don't get a deduction.
Then you convert that traditional IRA balance to a Roth, where it grows tax-free and can be withdrawn tax-free in retirement.
If you hold any pre-tax money in a traditional IRA, SEP IRA, or SIMPLE IRA, the IRS treats all your IRA balances as one pool when you convert.
That means a conversion gets taxed proportionally, not just on the after-tax dollars you just added.
Someone sitting on a large rollover IRA from an old 401(k) could owe a hefty tax bill.
That's why financial planners often tell clients to check their existing IRA balances before attempting this move.
If you have pre-tax IRA money, one common workaround is rolling it into your current employer's 401(k) first, which clears the deck for a clean conversion.
Not every workplace plan accepts incoming rollovers, so it's worth a call to your HR or plan administrator.
You'll need to file IRS Form 8606 with your tax return to document the nondeductible contribution, and you'll get a Form 1099-R the following year showing the conversion.
Miss the 8606 and you risk paying taxes twice on the same dollars.
Tax software usually handles this, but it's a detail worth double-checking.
The "step transaction" doctrine lets the IRS collapse multiple steps into one if they happen too close together, though in practice the agency has never formally challenged a straightforward backdoor Roth.
Still, most advisors suggest waiting a few weeks or months between the contribution and the conversion rather than doing both on the same day.
There's no hard rule, just a preference for keeping clean records.
High earners who have maxed out their 401(k), expect to be in a similar or higher tax bracket later, and want another bucket of tax-free growth.
Younger investors with decades of compounding ahead often get the biggest lift.
Someone closer to retirement in a lower bracket may find a regular brokerage account or a traditional IRA deduction more useful.
One more wrinkle: starting in 2024, Roth accounts in employer plans no longer face required minimum distributions, and Roth IRAs never have.
That makes them a flexible tool for estate planning, since heirs can inherit tax-free growth, subject to the 10-year withdrawal rule for most beneficiaries.
The strategy isn't for everyone, and it isn't free of complexity.
But for a certain slice of earners, it's one of the few remaining ways to buy tax-free growth after the front door closes. **Our take:** The backdoor Roth is legal, widely used, and worth a conversation with a tax professional if your income puts you over the limit.
Just don't attempt it blind, because the pro-rata rule and Form 8606 have burned plenty of do-it-yourselfers.
Final Thoughts
A few hundred dollars of planning now can save thousands later.