Annuity Calculator

Annuity Calculator – Future Value & Present Value

An annuity is a series of equal payments made at regular intervals. This calculator helps you find either the future value (how much your payments will grow to) or the present value (what a stream of future payments is worth today).

Types of Annuities

• Ordinary Annuity: Payments made at the end of each period (most common — mortgages, bonds).
• Annuity Due: Payments made at the beginning of each period (e.g., rent, insurance premiums). Slightly higher value due to earlier compounding.

Key Formulas

Future Value (Ordinary): FV = PMT × ((1+r)^n − 1) / r

Present Value (Ordinary): PV = PMT × (1 − (1+r)^−n) / r

Where PMT = payment, r = rate per period, n = number of periods.

Common Uses

• Retirement income planning
• Evaluating lump sum vs. payment stream options
• Pension and insurance calculations
• Savings projections with regular contributions