403b Calculator

Finance

This 403(b) calculator estimates the future value of a 403(b) retirement plan, the tax-advantaged plan offered to employees of schools, hospitals, and nonprofits. Enter your annual contribution, an expected annual return, and the number of years until retirement, and it projects your account balance using the future value of an annuity.

Formula

FV = PMT × [((1 + r)ⁿ - 1) / r]
  • A 403(b) projection uses the future value of an ordinary annuity: FV = PMT × [((1 + r)ⁿ − 1) / r].
  • PMT is your annual contribution, r the annual return as a decimal, and n the number of years until retirement.
  • Compounding means longer time horizons and higher returns produce disproportionately larger balances.
  • Enter the return as a plain percentage (e.g. 6 for 6%) and amounts in your local currency.
  • This is a simplified estimate that assumes a constant return and level contributions, ignoring fees, taxes, and employer matching.

Example Calculation

Inputs
  • Annual Contribution (PKR): 100000
  • Annual Return %: 6
  • Years: 25

Contributing PKR 100,000 a year for 25 years at a 6% return projects a balance of about PKR 5.49 million. Of that, PKR 2.5 million is your contributions and the rest is compounded growth.

Frequently asked questions

What is a 403(b) plan?
It is a tax-advantaged retirement savings plan for employees of public schools, hospitals, churches, and certain nonprofits, similar to a 401(k) in the private sector.
How is the future value calculated?
With the future value of an annuity, FV = PMT × [((1 + r)ⁿ − 1) / r], assuming level annual contributions and a constant return.
What return should I use?
Pick a rate that matches your investment mix. A moderate, diversified portfolio might assume around 6%, while a stock-heavy one might assume more.
How does a 403(b) differ from a 401(k)?
They are very similar tax-advantaged plans; the main difference is the type of employer. 403(b) plans are for nonprofit and public-sector workers.
Does this include fees or taxes?
No. It is a gross projection. Plan fees and later withdrawal taxes will reduce the amount you actually keep.