Free Compound Interest & Savings Calculator
Starting with , adding , earning a year, for .
Tap any underlined value to change it. Everything else is under All assumptions.
You put in $190,000. Compound interest adds $504,709.
Assumes 7% a year, compounded monthly, before tax and fees.
Adding $100 more a month would give you $817,417, $122,709 more.
How we calculate thisFree, no ads, no account.
Pin locks in exactly what you see now, so finish your edits first. Then change any value, and the two are shown side by side.
- Balance
- Contributions only
Starting with , adding , earning a year, for .
You added is the $6,000 of monthly contributions for that year; the $10,000 you started with is in the balance from year one. Interest overtakes what you add in year 9.
| Year | You added | Interest | Balance |
|---|---|---|---|
| 1 | $6,000 | $955 | $16,955 |
| 2 | $6,000 | $1,458 | $24,413 |
| 3 | $6,000 | $1,997 | $32,411 |
| 4 | $6,000 | $2,575 | $40,986 |
| 5 | $6,000 | $3,195 | $50,182 |
| 9 | $6,000 | $6,157 | $94,108 |
The power of compound interest
Compound interest is the engine behind long-term wealth: you earn returns not only on your original investment but also on the returns it has already generated. easyfi.app lets you model savings, investment, and mortgage scenarios side by side and watch how small changes in rate, contribution, or time compound into very different outcomes.
- Savings and investing: initial amount, monthly contribution, rate, and horizon.
- Mortgage payoff: see how extra monthly payments cut years and interest.
- Rent vs buy: compare long-term net worth with taxes and appreciation.
- Pin a result to compare two scenarios, and share either one through the URL.