If you earn too much to contribute to a Roth IRA directly, you already know the frustration: the account you want most is the one Washington says you can't have.
Enter the backdoor Roth IRA, a two-step workaround that lets high earners fund a Roth by contributing to a traditional IRA first, then converting it.
It isn't — and that distinction matters more than ever as more Americans cross the income thresholds that lock them out of direct Roth contributions.
For 2025, the ability to contribute directly to a Roth phases out between $150,000 and $165,000 for single filers, and $236,000 to $246,000 for married couples filing jointly.
Here's how the maneuver works in plain English.
You put money into a traditional IRA, but because your income is too high, you can't deduct it — so it's after-tax money.
Since you already paid taxes on the contribution, you generally owe little or nothing on the conversion.
The catch that trips up most people is the pro-rata rule.
If you hold any pre-tax money in a traditional, SEP, or SIMPLE IRA on December 31 of the conversion year, the IRS looks at all your IRA balances together.
That means a chunk of your conversion could become taxable, even if the dollars you converted were after-tax.
Say you have $50,000 sitting in an old traditional IRA from a previous job and you try to convert a fresh $7,000 contribution.
Under the pro-rata formula, most of that conversion gets treated as pre-tax, and you'll owe income tax on it.
The clean fix is rolling that old pre-tax IRA into a 401(k) before year-end, if your plan allows it.
The IRS treats conversions under the calendar-year rule, so a conversion done in 2025 lands on your 2025 tax bill — no grace period.
And Congress has repeatedly eyed closing the backdoor, though as of now it remains legal and widely used.
One more thing: the contributed amount isn't the only thing that moves.
Any growth in the traditional IRA before you convert gets taxed as ordinary income.
Converting soon after contributing keeps that growth — and the tax bill — tiny.
For savers staring down a big tax bill in retirement, the appeal is obvious.
Roth withdrawals in retirement are tax-free, there are no required minimum distributions during the owner's lifetime, and the money passes to heirs more cleanly than traditional IRA assets under current rules.
The mechanics aren't complicated, but the details decide whether you save thousands or hand an unexpected check to the IRS.
Run the numbers with a tax pro before converting, especially if you have old IRAs scattered across brokers. **Our take:** The backdoor Roth is one of the few remaining legal ways for high earners to buy tax-free growth, and it's worth the paperwork.
Final Thoughts
But the pro-rata rule punishes anyone who converts without cleaning up old pre-tax IRAs first — so do the housekeeping before you write the check, not after.