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Estimate how much federal and state tax you will pay when converting a traditional IRA or 401(k) to a Roth. The conversion amount is taxable as ordinary income. Available for all 50 states.
Total Tax on Conversion
$15,814.04
Net in Roth
$34,185.96
Effective Rate
31.6%
Converting $50,000 with $80,000 other income in California (single) costs $15,814.04 in federal and state tax. You net $34,185.96 in the Roth.
Source: FinCalc server-rendered example using the same formulas as the interactive calculator.
Tax on Conversion
$15,814.04
Net in Roth
$34,185.96
Federal Tax
$11,164.04
State Tax
$4,650
Effective Rate
31.63%
FinCalc AI
FinCalc AI
Suggested questions:
When you convert from traditional to Roth, the converted amount is added to your taxable income for that year. We compute the incremental federal and state tax on that addition using current brackets and standard deductions. No penalty applies; you pay ordinary income tax only.
Spreading conversions over multiple years can keep you in a lower bracket. Converting in a low-income year (e.g., early retirement before Social Security) often reduces the tax cost.
Data and assumptions align with official publications. For verification and current figures:
The converted amount is taxed as ordinary income in the year of conversion—federal and state. No penalty applies. Your marginal rate on the conversion depends on your total taxable income including the conversion amount. Spread conversions over multiple years to stay in a lower bracket.
Consider converting if you expect higher tax rates in retirement, want tax-free growth and withdrawals, or have a low-income year. Avoid converting large amounts in a single year if it pushes you into a much higher bracket. Run the numbers for your state and filing status.
Yes. Partial conversions are common. Convert an amount that keeps you in a desired tax bracket. Some retirees convert up to the top of a bracket each year. The calculator shows the tax on any conversion amount.
Converting when account values are low can reduce the tax hit because you pay tax on the converted balance. If your $100,000 IRA drops to $80,000, converting then means tax on $80,000 instead of $100,000. You also convert more shares for the same tax cost, which can amplify tax-free growth later.
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