What this calculator does

This retirement calculator projects how savings could grow before retirement. It is useful for testing contribution levels and time horizons.

Formula used

The calculator compounds current savings monthly and adds a regular monthly contribution until the retirement age is reached.

How to read the result

Investment returns are uncertain. Use several return assumptions and remember that tax, fees, inflation and pension rules can change the real outcome.

Assumptions

  • Assumes monthly contributions.
  • Assumes a constant annual return.
  • Does not include tax relief, employer contributions, fees or drawdown planning.

Sources and checks

This calculator uses a standard public formula. Where rules or thresholds can change, source links are listed on the relevant page.

Frequently asked questions

Why does starting age matter so much?

More years means more contributions and more time for compounding. Starting earlier can reduce the monthly amount needed.