Savings Calculator (Regular Deposits)

Savings calculator: how much you will have by saving a fixed amount every month, or how much to save to reach a goal.

How to use this calculator

Choose the quantity you want under “Solve for”.
Type the known values and pick their units: any combination works.
The result updates as you type. Open “Show the steps” to see the substitution.

Enter a monthly deposit, an expected annual return and a period to see what your savings grow to. Or set the goal and solve for the monthly amount you need.

Deposits are assumed at the end of each month with monthly compounding.

Results are estimates for information only and do not constitute financial advice. Your lender’s or bank’s figures may differ.

Formula

FV = PMT · (1 + r)ⁿ − 1r

Symbol	Quantity	Units
PMT	Monthly deposit	$, €, £
i	Annual return	%, ×
t	Saving period	years, months
FV	Amount saved	$, €, £

Constants used: r = annual rate / 12 · n = months

Worked example

Given: PMT = 300.00 $ · i = 5 % · t = 10 years

FV = PMT(1 + r)ⁿ − 1r

Result: FV = 46,584.68 $

Amount saved for different values of Monthly deposit

PMT · Monthly deposit	FV · Amount saved
150.00 $	23,292.34 $
225.00 $	34,938.51 $
270.00 $	41,926.22 $
300.00 $	46,584.68 $
330.00 $	51,243.15 $
375.00 $	58,230.85 $
450.00 $	69,877.03 $
600.00 $	93,169.37 $

Other values as in the worked example.

Frequently asked questions

How much will I have saving $300 a month for 10 years at 5 %?

About $46,585: $36,000 deposited plus $10,585 of interest.

How much do I need to save to reach $100,000 in 15 years?

Select the monthly deposit under “Solve for”: at 5 % it is about $374 a month.

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Last updated: November 7, 2026 · Report an error