Parantaj

Compound Interest Calculator

Calculate how your investment grows with compound interest and compare different scenarios.

Compound Interest Calculator

Your initial investment amount
Amount you will add each month
%
Annual nominal interest rate

No results found

How often interest is added to the principal

Year
How many years will you hold the investment?

What Is Compound Interest?

Compound interest is when earned interest is added to the principal and the next period's interest is calculated on this total. This "interest on interest" effect provides exponentially growing returns over time.

Formula

A = P(1 + r/n)^(nt) + PMT × [((1 + r/n)^(nt) - 1) / (r/n)]

P = Principal, r = Annual rate, n = Compounding frequency, t = Years, PMT = Periodic contribution

Impact of Compounding Frequency

The more frequently interest is compounded (daily > monthly > annual), the higher the effective return. However, the difference is usually small — the real impact comes from investment duration and regular contributions.

Info