Savings Goal Calculator: How Much Should You Save Each Month?

A new phone, a trip, or an emergency fund becomes easier to plan when you can turn the total into a monthly amount. Use this free savings goal calculator to work backward from your target instead of guessing what to set aside.

Start with a 0% yield to see a plan based entirely on your own contributions. Then test an optional annual percentage yield (APY) assumption to see how much difference interest could make.

Example: turn a $5,000 goal into a monthly plan

If your target is $5,000, you have $1,000 saved, and you have 12 months, the remaining amount is $4,000. At 0% yield, divide $4,000 by 12: $333.34 per month when rounded up to cents. Twelve payments at that rounded amount slightly exceed the goal.

If that payment is not affordable, change the time frame or target rather than assuming an unusually high investment return. A longer deadline reduces the required monthly contribution without depending on market gains.

How to use the savings goal calculator

1. Set the full target. For a purchase, include predictable taxes, shipping, and accessories rather than the advertised price alone.
2. Enter money already assigned to this goal. Avoid counting the same savings toward two different plans.
3. Use whole months. The tool assumes the first contribution is made one month from now and the last at the end of your selected period.
4. Choose a yield assumption. Zero is a useful baseline. Any positive rate is an input for a scenario, not a promised return.
5. Compare the result with your budget. Leave room for required bills and unexpected expenses before committing to a transfer.

The formula and interest assumption

Without interest, monthly saving equals (target − starting balance) ÷ months, with a minimum contribution of zero. With interest, the monthly rate is r = (1 + APY ÷ 100)^(1/12) − 1. The required monthly contribution is [target − starting balance × (1 + r)^n] ÷ [((1 + r)^n − 1) ÷ r], again floored at zero.

The tool interprets the entered annual yield as an effective annual rate and converts it to a matching monthly rate. It does not treat an advertised APR as APY. It assumes a constant rate and month-end deposits, so an account with changing rates, daily accrual, irregular transfers, fees, or withdrawals may produce a different result.

Make the plan survive a difficult month

Try a second calculation with a smaller monthly capacity by extending the deadline. If you miss a payment, return with the actual remaining balance and the months left. Recalculating is more useful than treating the original schedule as fixed.

For seasonal spending, pair the tool with our holiday budget guide. The SEC also offers a savings goal calculator for another planning reference; results may differ when rate conventions or contribution timing differ.

Frequently asked questions

Does this predict stock-market returns?

No. A constant positive yield is a mathematical scenario. Market returns vary and can be negative. Do not treat a stock-return assumption as guaranteed funding for a near-term bill.

What if I already have enough saved?

The required contribution is zero. If your assumed interest alone would reach the target, the tool also shows zero, but the result depends on that interest actually being earned.

Does it include inflation or taxes?

No. Enter a target that reflects the price you expect to pay. Interest taxes, account fees, and price increases can leave you short unless you allow for them.

Can I contribute at the beginning of each month?

This version uses month-end contributions. Earlier deposits generally earn interest for longer when the yield is positive; the result will differ from a beginning-of-month model.

Educational planning tool. Review the plan when your income, deadline, or account rate changes.

More free money calculators

Check a trade with our stock profit calculator, or test an annual fee with our membership break-even calculator. Each tool includes its formula, worked examples, and limitations.