Retirement tax calculator · 2026

Roth Conversion Calculator

How much can you convert in 2026, and what does each extra dollar really cost? Enter this year’s income to see your room in each tax bracket, where Medicare IRMAA tiers start, and the full federal cost of every $10,000, with Social Security and the senior deduction counted.

Everything is calculated in your browser. Nothing you enter is sent anywhere, saved, or added to the page address.

You

Filing status

Your 2026 income

Yearly amounts, before tax. Leave anything that doesn’t apply blank.

Deductions

Otherwise the standard deduction is used, with the extra amount for each person 65 or older.

Enter your age to see your results.

What this doesn’t include

State tax, the net investment income tax, AMT, the QBI deduction, the effect on premium tax credits before 65, the five-year rules for Roth withdrawals, and tax rates in future years. It also doesn’t tell you whether to convert: that depends on years this page can’t see.

Estimates for 2026 using federal figures only, from the inputs you entered. Not tax advice for your situation and not a guarantee of any result. State taxes, the net investment income tax, AMT and other items are not included. See how this is calculated.