For 2026, direct Roth IRA contributions phase out between $153,000 and $168,000 of income for single filers, and between $242,000 and $252,000 for married couples filing jointly. If you earn above those limits, the direct route is closed, but the backdoor Roth IRA is still open. It is a legal, IRS-acknowledged two-step process: contribute to a traditional IRA, then convert it to a Roth. It is not a loophole, it is a workaround built into the rules, and it is the standard path for high earners who want tax-free growth.

The 2026 Limits You Need to Know

The IRA contribution limit for 2026 is $7,500 if you are under 50, or $8,600 if you are 50 or older, including the $1,100 catch-up. That limit is combined across all your traditional and Roth IRAs, and you have until April 15, 2027 to make your 2026 contribution. The backdoor process uses the same limit: there is no separate or extra allowance. The conversion itself has no income limit and no dollar limit beyond what you contributed, which is the whole point of the strategy.

The Two Steps, Done Properly

Step one: make a non-deductible contribution to a traditional IRA. Open a traditional IRA if you do not have one, contribute up to the limit, and designate the contribution as non-deductible. Step two: convert that balance to a Roth IRA. Done quickly, with no earnings sitting in the account between the two steps, the conversion is essentially tax-free, because you already paid tax on the money you contributed. File IRS Form 8606 with your tax return to report the non-deductible contribution, because that form is what makes the whole thing work on paper.

The Pro-Rata Trap That Ruins It

The backdoor Roth has one serious complication: the pro-rata rule. If you already hold pre-tax money in any traditional IRA, SEP-IRA or SIMPLE IRA, the IRS treats all your IRA assets as a single pool when calculating how much of a conversion is taxable. That means part of your conversion gets taxed even if you only intended to convert the new after-tax money. The fix is to roll pre-tax IRA money into your employer's 401(k) before you start, if your plan allows it. If you cannot, run the numbers carefully, because a surprise tax bill is worse than no backdoor at all.

Mega Backdoor Roth: The Bigger Cousin

If your employer's 401(k) allows after-tax contributions and in-service withdrawals, there is a bigger version of this strategy called the mega backdoor Roth. The regular backdoor moves $7,500 a year into a Roth IRA. The mega backdoor can move up to $47,500 a year in after-tax 401(k) contributions, which are then converted to a Roth IRA or a Roth 401(k). The total 401(k) contribution ceiling for 2026 is $72,000, including your $24,500 salary deferral and your employer's match, and the gap between those numbers is the space the mega backdoor fills.

Not every plan allows it, and you need to check two things with your plan administrator: does the plan accept after-tax contributions beyond the normal limit, and does it allow in-service conversions or withdrawals to a Roth IRA? If both answers are yes, the mega backdoor is the most powerful retirement savings tool available to most high earners, dwarfing the regular backdoor. If either answer is no, the regular backdoor is still worth doing. Either way, the principle is the same: move money into tax-free growth while the rules allow it, because rules can change.

The backdoor Roth is one of the most valuable tools in the high earner's kit, and it takes about an hour a year to execute. Contribute, convert, file Form 8606, and repeat annually. Just clear out pre-tax IRA money first, keep the two steps close together so no earnings accumulate, and never skip the paperwork. Done right, it moves $7,500 a year into tax-free growth that would otherwise be locked out entirely.