Savers who earn too much to contribute to a Roth IRA directly have been quietly using a workaround for years, and it's getting fresh attention as more Americans look for ways to shield investment growth from future taxes.
The strategy, commonly called the backdoor Roth IRA, lets high earners move money into a Roth account by converting a traditional IRA contribution.
You contribute to a traditional IRA, which has no income limit, then convert that money to a Roth IRA, which also has no income limit on conversions.
The catch is that the contribution itself may not be deductible if you or your spouse have a workplace retirement plan and your income is above certain thresholds.
That's fine for this strategy, because a non-deductible contribution means you've already paid tax on it.
If you hold other pre-tax money in traditional, SEP, or SIMPLE IRAs, the IRS treats all of your IRA balances as one pot when calculating how much of your conversion is taxable.
That can turn a clean maneuver into a messy tax bill.
Many people who switch jobs roll old 401(k)s into their current employer's plan specifically to keep their traditional IRA balance at zero.
Contribution limits for 2025 sit at $7,000 for those under 50 and $8,000 for age 50 and up, same as last year.
Those figures apply across all your IRAs combined.
If you're in a high tax bracket now and expect to be in a lower one later, paying tax on the conversion today may not pencil out.
If you expect rising tax rates or want tax-free withdrawals in retirement, it can make more sense.
A common approach is to convert shortly after contributing, before the money has time to grow and create a bigger taxable event.
Paperwork trips people up more than the math does.
You'll typically file Form 8606 with your return to track your non-deductible basis, and skipping it can cause you to pay tax twice on the same dollars down the road.
If you've done several years of conversions, keep every 8606 on file.
One more thing worth checking: the IRS has gone back and forth on whether annual limits on conversions could return, and legislative proposals have floated the idea of closing the backdoor route for high earners.
Nothing has passed, but the uncertainty is a reason some people front-load conversions while the door is open.
If your situation involves a large existing IRA, a business, or a complicated tax picture, a one-hour conversation with a CPA can save you from a surprise in April.
The mechanics are simple on paper; the details are where people get burned. **Our take:** The backdoor Roth remains one of the few legitimate ways high earners can buy tax-free growth, but it rewards people who read the rules carefully.
Final Thoughts
Run the pro-rata math before you convert, not after, and treat Form 8606 as non-negotiable.