HisabCalc › Interest & savings

Goal Date Calculator

The monthly saving a target needs by a fixed date.

Enter your numbers

Target amount

Example: 1000000

Current savings

Example: 100000

Months

Example: 60

Annual return (%)

Example: 8

Result

Currency

Figures are computed on your device; nothing is sent anywhere.

Formula

pot grows at the monthly rate; monthly = (target − pot) ÷ annuity factor

How the calculation works

A goal with a date is a monthly figure in disguise. The pot you already have grows on its own, and the rest has to be saved month by month. On the example, 100,000 grows to 148,985 over five years at 8%, leaving 851,015 to find, which is 11,582 a month.

Both halves matter. Raising the return lowers the monthly figure, and starting with a larger pot does the same, so the tool shows the grown pot and the remainder beside the payment.

Common mistakes

Planning on the target divided by the months. That ignores the growth of the pot you already have, and overstates the monthly figure badly over long periods.
Forgetting that a higher assumed return is a riskier plan. The monthly figure falls, but only if the return actually arrives, which it need not.

When to use it

Use it when a goal has a date attached, to see the monthly saving the deadline actually demands rather than the simple division.
Enter 0 for the return for the cautious figure. The tool assumes the saving is made at the end of each month, which is a standard but slightly conservative convention.

Worked example

A target of 1,000,000 from 100,000 over 60 months at 8%: the pot grows to 148,985, leaving 851,015, so 11,582 a month.

Monthly needed ৳11,582.09

Pot grows to ৳148,984.57

Remaining ৳851,015.43

Months 60

Common questions

What if I enter 0 return?

Then it is a plain saving sum with no growth, the safest assumption.

What if the pot already covers the target?

Then the monthly figure is 0 and the remaining row is 0 as well; nothing more is needed.

Last updated: 2026-09-29