About the Savings Calculator
A savings calculator projects the balance of a savings account from an initial deposit, regular contributions, and an interest rate. It is the tool for planning toward a specific goal — a deposit, a car, an emergency fund — where the money must stay safe and accessible.
The formula
FV = P(1 + r/12)^(12t) + C · [((1 + r/12)^(12t) − 1) / (r/12)]P is the initial balance, C the monthly deposit, r the annual rate, and t the years. Savings accounts typically compound monthly or daily.
How to use this calculator
- 1Enter your Initial Savings ($). The field starts at
5000, which you can overwrite. - 2Enter your Monthly Deposit ($). The field starts at
300, which you can overwrite. - 3Enter your Annual Interest Rate (%). The field starts at
4.5, which you can overwrite. - 4Enter your Years to Save. The field starts at
10, which you can overwrite. - 5Read the result straight away — it recalculates as you type, so there is no button to press. Use Share to copy a link that reopens the page with your exact numbers filled in.
Worked example
| Input | Value |
|---|---|
| Initial Savings ($) | 5000 |
| Monthly Deposit ($) | 300 |
| Annual Interest Rate (%) | 4.5 |
| Years to Save | 10 |
Result
Total Savings: $53,194.386
Total Deposited: $41,000.00
Interest Earned: $12,194.386
Interest as % of Total: 22.9%
Those are the values the page loads with, so you can reproduce this result yourself and then change one field at a time to see what drives the outcome.
Understanding your result
For short horizons, contributions dominate almost entirely. Saving 300 a month for three years at 4.5 percent yields around 11,600, of which 10,800 is your own money. Interest is a modest bonus rather than the engine — which is the opposite of long-term investing and the reason savings accounts are the right vehicle for near-term goals but the wrong one for retirement.
The rate you get matters more than it used to. High-yield online savings accounts have paid several percentage points above traditional bank rates in recent years, and the gap on a 20,000 dollar emergency fund is hundreds of dollars a year for no additional risk.
Things worth knowing
- Compare APY, not interest rate. APY includes compounding and is the directly comparable figure.
- Keep three to six months of expenses in an accessible emergency fund before investing beyond retirement accounts.
- High-yield online accounts routinely pay far more than branch-based savings accounts.
- Check that your balance is within deposit insurance limits — 250,000 dollars per depositor per bank in the US.
- Interest on savings is normally taxable as income in the year it is earned.
Frequently asked questions
How much should I keep in savings?+
Three to six months of essential expenses as an emergency fund, plus anything earmarked for a goal within the next few years. Money needed later than that generally belongs in investments.
What is the difference between APR and APY?+
APY includes the effect of compounding within the year and APR does not, so APY is the higher and more accurate figure for savings. Always compare accounts on APY.
Should I save or invest?+
Save for goals within about three to five years, where a market drop would be damaging. Invest for longer horizons, where growth outweighs volatility and inflation is the bigger risk.
Is savings interest taxable?+
Yes, generally as ordinary income in the year earned, and banks report it to tax authorities. Tax-advantaged accounts such as ISAs or IRAs shelter it, depending on your jurisdiction.