The simple & complex Interest calculator

This calculator allows the accurate calculation of simple or complex interest accumulated over a set timeframe.

The timeframe can be a number of years, months, weeks or days or a date interval may be chosen.

In addition, different compound periods may be chosen for a complex interest calculation.

All calculations are made using the standard formulae rather than iteratively calculating over periods of time as this can introduce more rounding errors.

Access the interest calculator from the members area.