Backdoor Roth IRA: Step-by-Step Guide for High Earners

📅 Last updated: March 2026

If you earn too much to contribute directly to a Roth IRA, the backdoor Roth IRA is your workaround. It’s a completely legal, IRS-acknowledged strategy that lets high earners enjoy the same tax-free retirement growth as everyone else. Here’s exactly how to do it in 2026.

What Is the Backdoor Roth IRA?

The backdoor Roth IRA is a two-step process:

1. Make a non-deductible contribution to a Traditional IRA
2. Convert that Traditional IRA to a Roth IRA

Since there’s no income limit on Traditional IRA contributions (only on deductibility), anyone can do step one. The conversion in step two is also available to anyone, regardless of income. Result: you get money into a Roth IRA even if you’re above the income limits.

Who Needs the Backdoor Roth?

You need this strategy if your income exceeds:

• $165,000 (single filers, 2026) — above this, direct Roth IRA contributions are completely phased out
• $246,000 (married filing jointly, 2026) — same threshold for couples

If your income falls in the phase-out range, you can contribute a partial amount directly. Above these limits, the backdoor is your only route.

Step-by-Step: How to Do a Backdoor Roth IRA

Step 1: Open a Traditional IRA (if you don’t have one)

Open a Traditional IRA at your brokerage of choice. We recommend Fidelity for its zero-fee IRAs and easy conversion process. Open a Traditional IRA at Fidelity →

Step 2: Make a Non-Deductible Contribution

Contribute up to $7,000 ($8,000 if 50+) to your Traditional IRA. Since you’re over the Roth IRA income limit, you’re likely also over the Traditional IRA deductibility limit — so this will be a non-deductible (after-tax) contribution.

Important: Do NOT invest the funds yet. Leave them in cash (money market) before converting to avoid complications.

Step 3: Convert to Roth IRA Immediately

Convert the Traditional IRA to a Roth IRA as soon as possible — ideally the same day or next business day. This minimizes earnings before conversion, which would be taxable.

At Fidelity: Go to Accounts → Manage → Convert to Roth IRA. At Vanguard: Account Maintenance → Convert to Roth IRA. At Schwab: Roth IRA Conversion request in the account settings.

Step 4: File IRS Form 8606

This step is critical. You must file IRS Form 8606 with your tax return to document the non-deductible contribution. This establishes your “basis” in the Traditional IRA and prevents you from being double-taxed on the conversion.

The Pro-Rata Rule: A Key Gotcha

The backdoor Roth works cleanly only if you have no pre-tax money in any Traditional IRA. If you have existing pre-tax Traditional IRA funds, the IRS applies the pro-rata rule:

The taxable portion of your conversion = (pre-tax IRA balance) ÷ (total IRA balance)

Example: You have $90,000 in a pre-tax Traditional IRA and contribute $7,000 non-deductible. Total IRA balance = $97,000. Pre-tax ratio = 92.8%. Converting $7,000 to Roth = $6,496 is taxable.

Solution: Roll your pre-tax Traditional IRA into your employer’s 401(k) before doing the backdoor conversion. Not all 401(k) plans accept rollovers, but many do.

Mega Backdoor Roth (For Even Higher Limits)

If your 401(k) plan allows after-tax contributions, you can do a mega backdoor Roth:

1. Max out standard 401(k) pre-tax contributions ($23,500 in 2026)
2. Make after-tax 401(k) contributions (up to the total 401(k) limit of $70,000)
3. Convert those after-tax contributions to a Roth 401(k) or roll to a Roth IRA

This can allow you to put up to $46,500 in additional after-tax contributions per year into a Roth account — far exceeding the standard Roth IRA limits.

Is the Backdoor Roth IRA Still Legal in 2026?

Yes. As of 2026, the backdoor Roth IRA remains legal and is explicitly acknowledged by the IRS in the instructions for Form 8606. Congress has periodically discussed eliminating it, but it remains available. We’ll update this article if that changes.

Bottom Line

The backdoor Roth IRA is one of the best strategies for high earners to build tax-free retirement wealth. The process takes about 30 minutes per year and can save you hundreds of thousands in taxes over a lifetime. Just watch out for the pro-rata rule and make sure to file Form 8606.

Open a Fidelity IRA to get started with the backdoor Roth →

Related: The Complete Roth IRA Guide 2026 | Roth IRA Contribution Limits 2026 | Tax-Loss Harvesting Explained