IRA assumptions

Defaults use 2026 US IRA limits; edit any assumption.

Formula notes

  • Roth value assumes tax is paid now and qualified withdrawals are tax-free.
  • Traditional value assumes deductible contribution today and ordinary tax on withdrawal.
  • Eligibility/phaseout fields are estimates and should be confirmed with your tax adviser.

Result options

Print, copy, or download your result

Use these quick actions after calculating. PDF summary buttons inside the result box still work where available.

Roth vs Traditional IRA Calculator guide

Formula, example, FAQs, and notes

Formula explanation in simple language

The calculator compares after-tax Roth value with Traditional IRA value after estimated withdrawal tax. Traditional current tax savings and future tax assumptions affect the net comparison.

  1. Roth contributions are modeled as after-tax contributions.
  2. Traditional contributions may create a current-year tax benefit based on the entered tax rate.
  3. Future Traditional withdrawals are adjusted by the expected retirement tax rate.
  4. Both account balances compound using the entered annual return and years.
  5. The comparison uses the same contribution and growth assumptions unless changed.

Example calculation

Example: contribute $7,000 for 25 years at 6% annual return. If today's tax rate is 24% and retirement tax rate is 22%, the calculator compares after-tax Roth value with Traditional value after estimated future tax.

After changing any input, recalculate and compare the new result with the original assumptions.

Common mistakes and interpretation notes

  • Do not leave default values unchanged if they do not match your real situation.
  • When changing currency, confirm that money fields converted to the correct selected currency before comparing results.
  • Check units carefully before calculating. Mixing inches, feet, pounds, kilograms, days, months, or years can change the result.
  • Treat the result as an estimate, not a guarantee, quote, diagnosis, settlement promise, or final professional decision.
  • Do not ignore tax treatment, fees, compounding assumptions, policy limits, inflation, or rate changes.

Disclaimer

This is not tax, retirement, or investment advice. IRA rules, contribution limits, eligibility, tax rates, and investment returns can change.

Roth vs Traditional IRA Calculator FAQ

Helpful answers for long-tail searches
How accurate is the Roth vs Traditional IRA Calculator?

The Roth vs Traditional IRA Calculator is accurate to the formula and assumptions shown on the page. Real-world results can change when costs, rates, taxes, laws, health factors, or project conditions differ from the values you enter.

Can I download the Roth vs Traditional IRA Calculator result?

Yes. Use the page result controls to download the PDF summary when available, or use the Print, Copy Result, and Download TXT buttons added below the calculator.

Does the Roth vs Traditional IRA Calculator convert currencies using exchange rates?

Yes. Money fields use the selected currency display and the site exchange-rate endpoint where supported. The PDF or result note shows the currency/rate information when available.

What inputs matter most in the Roth vs Traditional IRA Calculator?

The most important inputs are usually the largest cost, rate, quantity, time, and risk assumptions. Small changes in these fields can move the final result significantly.

Is the Roth vs Traditional IRA Calculator financial advice?

No. This calculator is an educational estimate and is not financial advice. Use it for planning and discussion, then verify important decisions with a qualified professional.