Savings Goal Calculator

Find out how much to save each month to reach a goal by a certain date.

Future value of monthly deposits ยท By Stuart Mathieson · Updated October 2026

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years
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Yearly rate on your savings, compounded monthly

How the savings goal calculator works

The calculator works backward from your goal. It grows your current savings to the goal date, then finds the monthly deposit that covers the rest, with interest compounded monthly and each deposit made at the end of the month:

Monthly saving = (G − S × (1 + r)n) × r ÷ ((1 + r)n − 1)
G
- your savings goal
S
- what you have already saved
r
- the monthly interest rate: the yearly rate ÷ 12 ÷ 100
n
- the number of months until the goal date

At a 0% rate this is simply (G − S) ÷ n.

Worked example

$20,000 in 5 years, with $2,000 already saved, earning 4% a year:

Monthly saving needed for $10,000

Starting from nothing:

Monthly saving needed to reach $10,000
Time0% interest2% interest4% interest
1 year$833.33$825.72$818.17
2 years$416.67$408.74$400.92
3 years$277.78$269.76$261.91
5 years$166.67$158.61$150.83
10 years$83.33$75.35$67.91

Over a year or two, time does almost all the work and interest makes little difference. Over 10 years, 4% interest cuts the monthly amount by nearly a fifth.

Things to keep in mind

Frequently asked questions

How much should I save each month?

Enough to reach your goal on time. Enter the goal, how long you have and your savings rate, and the calculator works out the monthly amount - for $10,000 in 5 years at 4%, it is $150.83 a month.

What interest rate should I use?

Use the rate your savings account pays. The calculator compounds monthly, so entering an APY slightly overstates growth, but the difference is small at typical savings rates. Leave it blank for a cautious 0% estimate.

What if I already have enough saved?

If your current savings will grow to the goal on their own by the date, the calculator shows $0 a month and how much you will have by then.

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