Savings Goal Calculator

Find the monthly deposit needed to reach a target amount by a target date.

Inputs

Allowed range: 0 to 1000000000

Allowed range: 0 to 1000000000

Allowed range: 0 to 100

Allowed range: 1 to 1200

Results

Required monthly deposit
$456.14
Total contributions
$16,421.14
Projected interest earned
$1,578.86
Target reached
$20,000.00

How it works

Given a future goal FV, a current balance PV, an annual return r and a horizon in months n, we solve for the required monthly contribution PMT using the future-value-of-an-annuity formula: FV = PV(1+i)^n + PMT·((1+i)^n − 1)/i, with i = r/12.

Complete guide

Enter your goal (car, trip, down payment), what you already have saved, your expected annual return, and how many months you have.

We return the monthly deposit required, the total you will contribute over the period, and the projected investment growth.

If the required deposit is too high, extend the horizon, raise the assumed return, or lower the goal — small changes to time-horizon usually have the largest impact thanks to compounding.

Frequently asked questions

What return should I assume?
Conservative cash: 3–4%. Diversified stock/bond portfolio: historically 5–7% real. Use a number you can defend.
Does it account for inflation?
No — values are nominal. Subtract expected inflation from the return to get a real-terms estimate.

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