Savings Goal Calculator
How long it takes to reach a savings goal at a given monthly contribution and interest rate.
- Months to reach goal37.6
- That is (years)3.1
- Total contributed by then$9,402.87
- Interest earned$597.13
Inputs used
- Savings goal$10,000.00
- Monthly contribution$250.00
- Annual interest rate4 %
About this calculator
Saving a fixed amount each month into an interest-bearing account is an annuity: each contribution earns interest from the month it lands, so the balance grows faster than contributions alone. The time to reach a goal comes from solving the annuity formula for the number of months.
Interest matters more the longer the horizon. For a goal a year away it barely moves the answer; over a decade it can shave many months off. The biggest lever, though, is the monthly contribution — doubling it roughly halves the time even before interest.
The calculation assumes contributions at the end of each month and a constant rate, and ignores tax on interest.
Quick reference
Months to reach a savings goal by goal and monthly contribution
Months needed at a 4% annual interest rate, contributing at the end of each month.
| Savings goal | $100 | $200 | $300 | $500 | $1,000 |
|---|---|---|---|---|---|
| $5,000 | 46.3 | 24.1 | 16.2 | 9.9 | 5.0 |
| $10,000 | 86.4 | 46.3 | 31.7 | 19.4 | 9.9 |
| $15,000 | 121.8 | 67.1 | 46.3 | 28.6 | 14.7 |
| $20,000 | 153.5 | 86.4 | 60.3 | 37.6 | 19.4 |
| $30,000 | 208.3 | 121.8 | 86.4 | 54.8 | 28.6 |
| $50,000 | 294.7 | 182.1 | 132.8 | 86.4 | 46.3 |
Frequently asked questions
How long will it take to save $10,000 at $250 a month?
At a 4% annual interest rate, about 38 months — just over three years. You would contribute roughly $9,400 of your own money over that time, with interest covering the remaining $600 or so.
Does the interest rate make much difference?
Over short horizons, very little; over long ones, a lot. Reaching $10,000 at $250 a month takes 40 months with no interest and about 38 at 4%, but a $50,000 goal takes 200 months with no interest versus about 154 at 4% — nearly four years sooner.
What is the fastest way to reach my goal sooner?
Raising the monthly contribution is the strongest lever: because contributions dwarf interest on most horizons, doubling the amount you set aside roughly halves the time to your goal.
Does this account for tax on the interest?
No. The figures assume the full stated rate compounds untaxed. If the interest is taxable and paid from the account, the balance grows a little slower and the goal takes marginally longer.
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Results are informational only — not financial, medical or legal advice.