Last updated 2026-05-01
Educational overview of backdoor Roth concepts and pro-rata basis considerations.
A backdoor Roth strategy often involves nondeductible traditional IRA contributions followed by conversion.
The pro-rata rule and Form 8606 reporting are important and should be reviewed carefully.
Existing pre-tax IRA balances can make a backdoor Roth conversion partly taxable. That is why basis tracking and account aggregation are important before relying on any simplified estimate.
Use the Roth Conversion Calculator to model the concepts in this guide with your own educational assumptions.
Open the calculatorUnderstand why after-tax basis can reduce but not always eliminate Roth conversion taxes.
A plain-English guide to Roth conversion basics, taxable income, and key IRS rules.
Understand the inputs that affect Roth conversion outcomes without treating a calculator as advice.
This Roth Conversion Calculator is for educational and illustrative purposes only. It does NOT constitute tax, financial, legal, or investment advice. The calculation results are based on the information you provide and the latest IRS tax rules, which are subject to change. We do not guarantee the accuracy of the results. Please consult a licensed Certified Public Accountant (CPA), financial advisor, or tax professional before making any financial decisions.