If your income blocks a direct Roth contribution, the backdoor Roth IRA is the IRS-permitted path many retirees and pre-retirees use. Here is how it works in 2026, plain and simple.
What is a backdoor Roth IRA and who needs one?
A backdoor Roth IRA is a two-step strategy for people whose income is too high to contribute to a Roth IRA directly. You make a nondeductible contribution to a traditional IRA, then convert that money to a Roth IRA. Because there is no income limit on conversions, this legally moves money into a Roth. For 2026, the IRS phases out direct Roth contributions between $153,000 and $168,000 for single filers and between $242,000 and $252,000 for married couples filing jointly. Above those ranges, the backdoor is often the only way in. The annual contribution cap is $7,500, plus a $1,100 catch-up at age 50 or older.
How do you actually execute a backdoor Roth in 2026?
The mechanics are straightforward but unforgiving. First, contribute up to $7,500 ($8,600 if 50+) to a traditional IRA as a nondeductible contribution. Second, convert that balance to a Roth IRA, ideally soon after, before it earns much. Third, file IRS Form 8606 to report the nondeductible basis so you are not taxed twice. If your contribution had no time to grow, the conversion is largely tax-free because you already paid tax on the dollars. Any growth between contribution and conversion is taxable. Keep records every year; Form 8606 is how the IRS tracks your after-tax basis.
What is the pro-rata rule and why does it ruin backdoor Roths?
The pro-rata rule is the single biggest trap. If you hold any pre-tax money in any traditional IRA, SEP-IRA, or SIMPLE IRA on December 31 of the conversion year, the IRS treats your conversion as a proportional blend of pre-tax and after-tax dollars across all those accounts. You cannot cherry-pick only the after-tax money. Example: if 90% of your combined IRA balances are pre-tax, then 90% of your conversion is taxable, even if you only meant to convert your fresh nondeductible contribution. A common fix is rolling existing pre-tax IRA money into a 401(k) before December 31, if your plan allows it.
Is a backdoor Roth still legal in 2026?
Yes. As of 2026, the backdoor Roth IRA remains fully legal and widely used. Proposals to eliminate it have surfaced in Congress over the years but none have become law, so the strategy stands. The IRS has long acknowledged the two-step approach when executed and reported correctly on Form 8606. Because tax law can change, and because Roth conversions interact with Medicare premiums, Social Security taxation, and your overall bracket, this is a decision worth discussing with a qualified tax professional. For help connecting retirement, Medicare, and income-timing decisions, call 1-800-MEDIGAP at 1-800-633-4427.
How does a backdoor Roth affect Medicare and retirement income?
A Roth conversion adds to your taxable income for the year, and that can ripple into Medicare. Higher modified adjusted gross income can trigger IRMAA, the income-related surcharge on Medicare Part B and Part D premiums, on a two-year lookback. It can also increase how much of your Social Security is taxed. The upside is long term: Roth IRAs have no required minimum distributions during your lifetime and grow tax-free, which can lower future taxable income and IRMAA exposure. Timing conversions before you start Medicare, or in lower-income years, often softens the hit. 1-800-MEDIGAP can help you see the full picture.