📊 Compound Interest Calculator with Contributions
Calculate compound growth with regular monthly contributions and see your wealth build over time.
Compound Interest with Contributions
This advanced compound interest calculator factors in regular monthly contributions alongside your initial principal. It shows how your money grows over time through the combined effect of compound interest and consistent saving. The visual chart makes it easy to see the accelerating growth in later years.
Frequently Asked Questions
What is compound interest?
Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. Unlike simple interest, compound interest grows exponentially over time because you earn interest on your interest.
How does compounding frequency matter?
More frequent compounding results in slightly higher returns. Daily compounding earns more than monthly, which earns more than quarterly, which earns more than annually. The difference is larger at higher interest rates and longer time periods.
Monthly vs annual compounding - what's the difference?
With annual compounding, interest is added once per year. With monthly compounding, interest is added 12 times per year, so each month you earn interest on the previous month's interest. Over 20 years at 7%, monthly compounding yields about 0.2% more than annual compounding.