What Is a Backdoor Roth IRA? How High Earners Can Still Contribute

Roth IRAs are one of the best retirement accounts available — tax-free growth, tax-free withdrawals, no required minimum distributions. But there's a catch: if you earn too much, you can't contribute directly. In 2026, the phase-out begins at $150,000 for single filers and $236,000 for married couples. That's where the backdoor Roth comes in.

What Is a Backdoor Roth IRA?

It's a two-step process that gets money into a Roth IRA indirectly, regardless of your income:

1. 1Contribute to a Traditional IRA (no income limits for contributions, though deductibility may be limited)
2. 2Convert that Traditional IRA balance to a Roth IRA

Because there's no income limit on Roth conversions — only on direct Roth IRA contributions — this strategy is completely legal. The IRS is aware of it and has never moved to eliminate it.

Step-by-Step: How to Execute a Backdoor Roth

1. 1Open a Traditional IRA at a brokerage (Vanguard, Fidelity, Schwab)
2. 2Make a non-deductible contribution — up to $7,000 in 2026 ($8,000 if 50+)
3. 3Do NOT invest the funds yet — leave them in cash/money market
4. 4Request a Roth conversion of the full balance
5. 5File IRS Form 8606 with your tax return to document the non-deductible contribution

The Pro-Rata Rule: The Biggest Backdoor Roth Trap

The pro-rata rule is what catches most people off guard. If you have any pre-tax money in ANY Traditional IRA, SEP-IRA, or SIMPLE IRA, the IRS treats your conversion as a mix of pre-tax and after-tax money — proportionally.

Example: You have $90,000 in an old Traditional IRA (pre-tax) and contribute $7,000 after-tax for the backdoor. Your total IRA balance is $97,000, of which $7,000 (7.2%) is after-tax. When you convert $7,000, only 7.2% is tax-free — the rest is taxable, defeating the purpose.

Solution: Roll your pre-tax IRA balances into your employer's 401(k) before doing the backdoor Roth. Most 401(k) plans accept rollovers. Once done, you have no pre-tax IRA balance, and the pro-rata rule is no longer an issue.

Is a Backdoor Roth Worth It?

For most high earners, yes — especially if you're decades from retirement. The tax-free growth compounds significantly over 20–30 years. Even a $7,000 annual contribution growing at 7% for 25 years becomes over $37,000 — all tax-free.

If you're within 5–10 years of retirement, the math is closer. The tax break on a Traditional IRA deduction might outweigh the Roth's tax-free growth over a short time horizon. Consult a financial advisor if you're unsure.

Mega Backdoor Roth: Going Even Further

Some 401(k) plans allow after-tax contributions and in-service Roth conversions — together called the 'mega backdoor Roth.' It can allow up to $46,500 in additional after-tax contributions per year beyond normal 401(k) limits. Not all employers allow it, but it's worth checking your plan documents.