Actuary

Annuity Formula

FV = PMT * [ ( ( 1 + i )^N - 1 ) / i ]
Where:

• FV = future value (maturity value)
• PMT = payment per period
• i = interest rate in percent per period
• N = number of periods

Compound Interest Formula

FV = PV * ( 1 + i )^N
Where:

• PV = present value
• FV = future value (maturity value)
• i = interest rate in percent per period
• N = number of periods

Simple Interest Amortized Loan Formula

PV * ( 1 + i )N = PMT * [ ( 1 + i )N - 1 ] / i
Where:

• PMT = the payment per period
• i = interest rate in percent per period
• PV = loan / mortgage amount
• N = number of periods

See also

• Actuarial Finance Calculator, Harm's own Java Applet Version of Actuarial/Financial Interest Calculator. See the Financial Interest Calculations wiki for description and How to use.
• Actuarial calculator at kbapps.
• Tools for money, Collection of calculators.