Initial 0; monthly 100; annual 12%; 2 months; month-end
Final 201; principal 200; interest 1Month one ends at 100. Month two earns 1 interest on the opening 100 and adds another 100.
Enter a tool name or topic.
Plan regular deposits rather than only a single lump sum. Enter an opening balance and a monthly contribution to see how much you contribute and how much comes from interest. The month-by-month table separates deposits, interest and closing balance so you can inspect the entire saving period.
Amounts display two decimals. Calculations use unrounded values, so displayed rows may not add up exactly. Download all rows as CSV.
| Month | Opening balance | Deposit | Interest | Closing balance |
|---|
Month one ends at 100. Month two earns 1 interest on the opening 100 and adds another 100.