Loans & savings
Compound interest calculator
Project savings growth with an initial amount, monthly contributions and a selected compounding frequency.
Your result
Enter your values and calculate. Changing an input clears the previous result.
How this calculation works
For nominal annual rate i and compounding frequency m, the equivalent monthly growth rate is (1 + i/m)^(m/12) − 1. Every month grows the balance, then adds the contribution. Growth rates are fixed estimates, including negative scenarios; taxes, fees and inflation are excluded. Rounded annual rows summarize contributions and growth.
Worked example
1,000 with 10% annual compounding and no contributions becomes 1,210 after two years.