Compound Interest Calculator

Principal Amount ($):

Annual Interest Rate (%):

Time Period:

Compound Frequency:

Regular Addition:

Addition Frequency:

Addition Timing:

Tax Rate (optional %):

About Compound Interest Calculator

Calculate the future value of your investments with compound interest. This calculator supports regular contributions, different compounding frequencies, and tax considerations.

Compound Interest Formula:

A = P(1 + r/n)^(nt)

A = Final amount
P = Principal amount
r = Annual interest rate
n = Number of times interest compounds per year
t = Time in years