Should I choose Roth or traditional contributions in 2025?

Compare Roth versus traditional contributions for 2025 or 2026 by entering current and retirement taxable income and a planned contribution amount. The calculator estimates your current and future marginal rates and shows which option delivers the higher after-tax value under the same assumptions.

No login required.

How this calculation works

  • Calculates marginal rates for current and retirement income.
  • Applies each marginal rate to the contribution amount.
  • Compares after-tax value between Roth and traditional options.

Common mistakes and caveats

  • Assumes identical investment growth and withdrawal timing.
  • Contribution limits and income phaseouts are not evaluated.
  • State taxes are not included in the comparison.

FAQ

Does a Roth contribution lower my taxable income now?

No. Roth contributions are after-tax and generally do not reduce current taxable income.

Last updated & sources

Last updated January 27, 2026.

TaxGuide Pro provides free state and federal tax calculators for individuals, freelancers, and small businesses.