How long will it take to reach a savings target?
A savings target becomes actionable when it has both a monthly contribution and a timeline. This calculator estimates the months needed to reach a target from current savings, adding a fixed amount at the end of each month. You can also enter a hypothetical annual return. Use it for an emergency fund, travel budget, education expense or deposit. Keep the target, current balance and contribution in the same currency; a currency label does not convert the money you enter.
The month-by-month method
Each month, new balance = previous balance × (1 + annual return / 100 / 12) + monthly contribution. The tool repeats that step until the balance reaches the goal or 1,200 months have elapsed. Contributions arrive after that month's interest. Total contributions include your starting savings plus all deposits; interest earned is the ending balance minus total contributions.
At zero return, months needed = ceiling((goal − current savings) / monthly contribution), provided the goal exceeds current savings and the contribution is positive. If you already have the target saved, the time is zero. The final month's deposit may take you above the goal; the tool does not calculate a reduced final contribution.
Make the target realistic
Use a rate supported by the actual account terms rather than an optimistic investment assumption. Cash without interest can be modelled at 0%. The calculation assumes a constant return and ignores tax, fees, withdrawals and missed deposits. A market investment may lose value, so a fixed-return estimate is not a reliable date for a near-term essential expense.
A future purchase may cost more because of inflation. Adjust the target separately if prices are expected to rise; simply subtracting inflation from the interest rate does not automatically update a fixed target amount. Try a larger monthly contribution and a zero-return scenario to see how much the plan depends on interest. A result that hits the 100-year limit is a capped calculation, not confirmation that the target was reached.
Worked examples
USD 10,000 target without interest
With USD 2,000 already saved and USD 300 contributed each month at 0%, the gap is USD 8,000. 8,000 / 300 = 26.67, so the first whole month that reaches the target is month 27, with USD 10,100 saved.
The same goal at an illustrative 4%
Applying 4% annual interest divided monthly and the same deposits reaches about USD 10,314.59 in month 26. Contributions total USD 9,800 and interest approximately USD 514.59. This assumes a stable rate with no fees or tax.
Frequently asked questions
Are contributions added before interest?
No. Existing savings earn that month's interest, then the monthly contribution is added.
Why does it round up to a whole month?
Deposits occur monthly. A fraction of a month is not another scheduled deposit, so the tool continues until a full deposit reaches the target.
Does the target rise with inflation?
No. Increase the target separately when planning a future purchase whose price may rise.
What if my savings already exceed the target?
The required time is zero months. Your existing savings already meet the amount entered.