Compound Interest
Investment growth with contributions and chart.
Growth chart
Year 1 contributed $ 12,400 balance $ 13,216 Year 2 contributed $ 14,800 balance $ 16,664 Year 3 contributed $ 17,200 balance $ 20,362 Year 4 contributed $ 19,600 balance $ 24,327 Year 5 contributed $ 22,000 balance $ 28,578 Year 6 contributed $ 24,400 balance $ 33,137 Year 7 contributed $ 26,800 balance $ 38,026 Year 8 contributed $ 29,200 balance $ 43,268 Year 9 contributed $ 31,600 balance $ 48,888 Year 10 contributed $ 34,000 balance $ 54,916 Year 11 contributed $ 36,400 balance $ 61,378 Year 12 contributed $ 38,800 balance $ 68,308 Year 13 contributed $ 41,200 balance $ 75,739 Year 14 contributed $ 43,600 balance $ 83,708 Year 15 contributed $ 46,000 balance $ 92,252
About the Compound Interest
Project investment growth with an initial amount plus optional monthly contributions, an annual return rate, and yearly, quarterly, monthly or daily compounding. A bar chart tracks the balance at each year end, and the output separates total contributions from interest earned with a growth multiple.
How to use the Compound Interest
- Enter the initial amount, monthly contribution, annual return and number of years.
- Choose a compounding frequency: yearly, quarterly, monthly or daily (approximate).
- Read the final balance, total contributed and interest earned tiles.
- Hover the growth chart bars to see each year-end balance, or open the full list.
Compound Interest FAQ
How do monthly contributions enter the math?
Each contribution is added to the balance monthly, and interest is applied at the chosen compounding interval โ so regular saving compounds on the running balance, not just the principal.
What is the growth multiple?
It is the final balance divided by everything you put in โ 2.00ร means the account doubled your total contributions through earned interest.
How realistic is the daily option?
It applies one three-hundred-sixty-fifth of the annual rate each day, which is a close approximation; actual bank schedules may use 360-day conventions or different rounding.