Backdoor Roth IRA Explained: 4 Steps for High Earners [2026]
Backdoor Roth IRA: legal workaround for the $150K (single)/$236K (joint) Roth limit. 4 steps + pro-rata rule + $7,000 2026 limit. Step-by-step.
A legal strategy that allows high earners above Roth IRA income limits to contribute by first making a non-deductible Traditional IRA contribution, then immediately converting it to a Roth IRA.
Example: A single filer earning $200K (above the $161K Roth phase-out) contributes $7,000 to a Traditional IRA, then converts it to a Roth IRA the same week — paying no additional tax if there are no other pre-tax IRA balances.
An IRS rule that requires Backdoor Roth conversions to be treated as a proportional mix of pre-tax and after-tax dollars across all Traditional, SEP, and SIMPLE IRAs.
Example: If you have $60,000 in a pre-tax Traditional IRA and contribute $6,500 after-tax, then convert that $6,500, about 90% of the conversion is taxable because pre-tax balance dominates.
The Roth IRA has income limits: contributions phase out between $146K-$161K (single) or $230K-$240K (married) in 2024. The Backdoor Roth IRA is a legal workaround that lets high earners effectively contribute to a Roth IRA by converting traditional IRA contributions.
The basic steps
- Step 1: Contribute to a Traditional IRA (no income limit for contributions, but may not be deductible at your income).
- Step 2: Immediately convert the Traditional IRA balance to a Roth IRA.
- Step 3: Pay taxes on any gains (minimal if converted immediately).
- Step 4: Report it correctly on IRS Form 8606 to avoid double-taxation.
Why it works
The IRS has no income limit on Traditional IRA contributions and no income limit on conversions. Combining these two rules effectively eliminates the Roth IRA income limit for anyone willing to take the extra step. Congress knows this loophole exists and hasn't closed it — it's considered intentional policy. Use the Roth IRA calculator to project the tax-free growth and the traditional IRA calculator to compare with the deductible alternative.
The pro-rata rule (read this carefully)
If you have existing pre-tax money in any Traditional IRA, SEP-IRA, or SIMPLE IRA, the IRS treats your conversion as a pro-rata mix of pre-tax and after-tax dollars. Example: $6,500 after-tax contribution + $60,000 existing pre-tax IRA = ~90% of your conversion is taxable. Painful.
Avoiding the pro-rata trap
- Before doing Backdoor Roth: roll any existing Traditional IRA money into your current employer's 401(k) if allowed
- This leaves $0 in Traditional IRAs
- Then make your $7,000 after-tax Traditional IRA contribution
- Convert to Roth with minimal tax impact
Timing and mechanics
- Contribute by April 15 for the previous tax year
- Convert ASAP after contribution to minimize gains (which would be taxable)
- Many brokerages (Fidelity, Vanguard, Schwab) support this directly online
- Keep records of Form 8606 filings — necessary to prove basis
Mega Backdoor Roth (bonus)
Some 401(k) plans allow after-tax contributions beyond the $23,000 limit, then in-plan conversion to Roth. This can put $40K-$60K into Roth annually. Check if your plan supports "after-tax contributions" and "in-service distributions" or "in-plan Roth conversions".
Frequently asked questions
Is the Backdoor Roth legal?
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What if I already have a Traditional IRA with pre-tax money?
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When should I NOT do Backdoor Roth?
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Plug in your own amounts with our free calculators.