Backdoor Roth Calculator
Calculate your pro-rata tax liability and model the 20-year tax-free growth advantage of a Backdoor Roth IRA.
2026 IRS Rules & Limits
- Contribution Limit: $7,000 (or $8,000 if you are age 50 or older).
- Income Phase-Outs: You cannot contribute directly to a Roth IRA if your Modified Adjusted Gross Income (MAGI) exceeds $246,000 - $256,000 (Married Filing Jointly) or $150,000 - $165,000 (Single).
- Because most attending physicians exceed these limits, the "Backdoor" method (making a non-deductible Traditional IRA contribution and immediately converting it) is necessary.
Calculator Inputs
Usually $7,000 or $8,000.
Total in Traditional, SEP, and SIMPLE IRAs across all your accounts.
Clear to Convert!
Since your pre-tax IRA balance is $0, your conversion will be 100% tax-free. You owe $0 in pro-rata taxes.
20-Year Growth Advantage
Assuming a one-time $7,000 contribution growing at 7% annually.
100% Tax-Free at withdrawal
Gains subject to 15% Long-Term Capital Gains Tax
Doing this backdoor strategy saves you $3,013 in future taxes on just this single year's contribution!
Clinical Context & Calculation Details
How to Use This Calculator
Use this calculator to determine your eligibility to safely perform a Backdoor Roth IRA conversion without facing unexpected tax bills.
Simply enter your existing pre-tax IRA balance and planned contribution. The tool will calculate any pro-rata tax liability and model the 20-year tax savings of using the Roth strategy over a taxable account.
Why Doctors Need This
Physicians typically earn too much to contribute directly to a Roth IRA. The Backdoor Roth is a legal loophole that allows high earners to still access tax-free retirement growth.
By contributing annually, you build a pool of tax-free money that won't increase your taxable income in retirement and isn't subject to Required Minimum Distributions (RMDs).
Pearls & Pitfalls
- Pearl: Always ensure your Traditional IRA balance is $0 on December 31st of the year you do the conversion to avoid the Pro-Rata rule.
- Pitfall: Forgetting to file IRS form 8606. This form proves to the IRS that your contribution was non-deductible. Without it, you might be taxed twice on the same money!
- Pitfall: Not realizing that SEP and SIMPLE IRAs also count towards the pro-rata calculation. Roll these into a 401(k) or 403(b) first if possible.
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Editorial Credibility
Joshua Dunigan, DO | Family Medicine Physician & Founder
I founded MedMoneyGuide to provide physicians with unbiased, specialty-specific financial guidance. My goal is to add transparency and credibility to your financial journey.
Frequently Asked Questions
Is the backdoor Roth IRA legal for doctors?
Yes, the backdoor Roth IRA is a fully legal strategy recognized by the IRS that allows high-income earners like physicians to fund a Roth IRA despite income limits.
What is the pro-rata rule in a backdoor Roth?
The pro-rata rule dictates that if you have existing pre-tax funds in any Traditional IRA, your backdoor Roth conversion will be partially taxable. Physicians should roll pre-tax IRAs into workplace 401(k)s first.