Savings growth calculator

What your starting savings and regular saving grow to after a number of years, with the interest earned and a year-by-year path.

Inputs

Starting savings

Amount you save each month

How often you save

Interest rate% a year

Saving foryears

You save at the

Every input and result then gets a + calc button.

Interest is added as often as you save: monthly saving earns interest monthly, at the annual rate divided by the number of savings a year.
Each saving is made at the start or end of its period, as chosen.

Rate per period: i = r / p
Starting savings: FV_0 = S (1 + i)^{p t}
Regular saving: FV_c = C \cdot \frac{(1 + i)^{p t} - 1}{i} \cdot (1 + i)^{\delta},\ \delta = 1 \text{ if saved at the start}
Savings at the end: FV = FV_0 + FV_c