Roth IRA Conversion Calculator

A Roth IRA conversion involves moving money from a traditional IRA (or other pre-tax retirement account) into a Roth IRA. The key trade-off is paying taxes now on the converted amount in exchange for tax-free growth and withdrawals in retirement.

How the conversion math works: When you convert, the amount moved to the Roth IRA is added to your taxable income for that year. The core question is whether paying taxes at today’s rate is better than paying taxes at your future retirement rate.

Traditional IRA (pre-tax) future value: After-tax value = Balance × (1 + r)^n × (1 - future tax rate)

Roth IRA (post-tax) future value: After-tax value = (Balance - tax paid now) × (1 + r)^n

Where r is the annual return rate and n is the number of years until withdrawal.

When conversion makes sense:

• Your current tax rate is lower than your expected future rate
• You have many years until retirement for tax-free growth to compound
• You want to reduce Required Minimum Distributions (RMDs) from traditional accounts
• You want to leave a tax-free inheritance to beneficiaries
• You expect tax rates to increase in the future

When conversion may NOT make sense:

• Your current tax rate is higher than your expected retirement rate
• You need to withdraw from the IRA to pay the conversion taxes
• You are close to retirement with little time for growth to offset the tax cost
• The conversion pushes you into a much higher tax bracket

Tax bracket considerations: The converted amount stacks on top of your regular income. Converting too much in one year can push you into a higher bracket. Many advisors recommend partial conversions over multiple years to stay within a favorable bracket.

The 5-year rule: Each Roth conversion has its own 5-year clock. Converted funds withdrawn before 5 years (and before age 59.5) may be subject to a 10% early withdrawal penalty on the taxable portion. However, conversions are withdrawn in order — contributions first, then conversions, then earnings.

Important note: This calculator provides a simplified analysis. Tax laws are complex, and individual situations vary greatly. Consider consulting a tax professional or financial advisor before making a Roth conversion decision.