Savings Calculator
Savings Planner
Calculation Results
| Ending Savings Balance | — |
|---|---|
| Total Principal (Deposited) | — |
| Total Interest Earned | — |
How to Use This Savings Calculator
Emergency fund math goes two ways: "If I keep saving $200/month, where am I in three years?" or "I need $15,000 by then—what do I have to put aside?" This calculator flips between those questions without rebuilding the spreadsheet each time.
- Choose a mode. Select How much my savings will grow to or How much I need to save periodically for a target goal.
- Enter starting balance and rate. Use your current HYSA or money-market APY as a planning assumption.
- Set the time horizon. Enter years and/or months until you need the money.
- Fill mode-specific fields. In grow mode, enter periodic deposit amount. In goal mode, enter target savings goal—the calculator solves required deposit.
- Set savings frequency and timing. Match how often you transfer money and whether transfers happen at period start or end.
- Press Calculate. Review ending balance or required deposit, plus total contributions and interest earned.
For inflation-adjusted investing beyond cash savings, see the Investment Calculator or Compound Interest Calculator.
Savings Formulas and Practical Applications
Savings growth is compound interest plus an annuity of deposits. Goal mode rearranges the same equation to solve payment instead of future value—like working backwards from a vacation fund deadline.
Future value (grow mode)
FV = PV(1 + i)n + PMT × [((1 + i)n − 1) / i]
Starting from $2,000, saving $250/month at 4.5% compounded monthly for 3 years builds to about $11,900, with roughly $900 from interest.
Required payment (goal mode)
Need $20,000 in 5 years with $1,000 already saved at 4%? The calculator returns the periodic deposit that closes the gap—typically the number people underestimate when they only divide goal by months.
Frequently Asked Questions
What is the difference between the two savings modes?
Grow mode projects ending balance from starting balance plus periodic deposits. Goal mode solves for the periodic deposit needed to reach a target savings goal by a deadline.
How does savings timing affect results?
Beginning of each period deposits earn interest for the full interval. End of period deposits miss that period's accrual, producing a slightly lower balance.
Can I model both years and months?
Yes. Years and months combine into one total savings horizon.
Does this calculator include taxes on interest?
No. Interest is shown pre-tax. Taxable accounts may owe tax on interest annually depending on account type and jurisdiction.
What savings frequency should I choose?
Match how often you actually move money—monthly for automatic transfers, or the closest available option if your bank uses a different compounding schedule.