Compare Savings Rates Calculator
Even a small difference in the interest you are paid on your savings can add up over time. Use this calculator to see how different savings rates can impact your savings strategy!
How the compare savings rates calculator works
It grows the same deposits at two different rates over your horizon and shows the gap between the ending balances — the real cost of leaving money in a low-yield account.
Worked example: with amount saved of $25,000, current rate (apy) of 0.50% and higher rate (apy) of 4.50%, the compare savings rates calculator shows extra earned at the higher rate of $12,893.
- At 0.50%
- $26,282
- At 4.50%
- $39,175
- Difference
- $12,893
- Extra interest
- $12,893
| Years | Current rate | Higher rate |
|---|---|---|
| 5 | $25,633 | $31,295 |
| 10 | $26,282 | $39,175 |
| 20 | $27,629 | $61,387 |
| 30 | $29,045 | $96,192 |
The formula
Each rate compounds (balance + contribution) × (1 + r) per period; the result is the difference between the two ending balances.
Results are estimates for educational purposes and are not financial advice. Confirm exact figures with your lender, plan administrator or advisor.
Questions about the compare savings rates calculator
How much does a higher savings rate really matter?
Over years, a lot. Moving from a near-zero account to a competitive yield can add thousands on the same deposits, as the comparison shows.
Is switching accounts worth the hassle?
Usually yes — high-yield savings accounts are liquid and FDIC-insured like ordinary ones. The extra earnings shown here are essentially free money.
What is a good savings rate to aim for?
Compare against the best high-yield accounts available; they typically track close to the federal funds rate. Enter both to see your specific gain.
Is the Compare Savings Rates Calculator free to use?
Yes. Every calculator on FinCalculators is completely free, with no sign-up, login or paywall. You can run as many scenarios as you like.