Savings Goal Calculator

Most savings goals fail for the same reason: the target is a number with no date, and the monthly amount is whatever happens to be left over. This calculator flips it around. Tell it what you want and when, and it tells you the monthly figure that actually gets you there.

The two questions it answers

"How long will this take?" — enter what you can realistically save each month, and the calculator counts forward month by month, adding interest as it goes, until you hit the target.

"What if I want it sooner?" — set a deadline and it solves the problem backwards, giving you the exact monthly deposit needed to land on the target by that month.

Seeing both at once is the useful part. The gap between "what I'm doing" and "what I'd need to do" is where the actual decision lives.

Why the interest field matters more than you think

For a short goal — a holiday in eight months — interest barely moves the number. Leave the rate at zero and nothing important changes.

For a longer goal it starts to matter. Saving $250 a month for five years puts in $15,000 of your own money; at 4% APY you finish with roughly $16,600. That extra $1,600 required no additional effort, only a different account.

This is the single easiest win in personal finance and most people skip it. If your savings are sitting in a current account paying nothing, moving them to a high-yield savings account is free money for about ten minutes of admin.

Make the goal specific

Vague goals lose to specific ones, consistently. "Save more" has no monthly number attached, so it gets whatever is left, which is usually nothing.

That last step sounds trivial and is not. An account called "Iceland trip" gets raided far less often than one called "Savings 2".

When the monthly number is impossible

The calculator will happily tell you that you need $890 a month when you have $300. That is not a failure of the plan — it is the plan doing its job early, before you have wasted six months.

You have three levers, and usually you pull more than one:

• Move the date. Pushing a deadline out by six months often drops the monthly figure by a third.
• Lower the target. A $4,000 version of the goal may be 90% as good as the $6,000 version.
• Raise the deposit. Worth checking, but rarely the whole answer on its own.

Adjust the inputs until the monthly number is one you could still pay in a bad month. A plan that only survives good months is not a plan.

Saving for several things at once

Run the calculator separately for each goal, then add up the monthly figures. If the total is more than you can save, you have a prioritization problem rather than a math problem — and it is much easier to solve once the numbers are visible.

In general: emergency fund first, then any high-interest debt, then everything else. A holiday fund built alongside a credit card at 24% is costing you money in the background.

How this is calculated

The calculator grows your balance one month at a time. Each month the balance is multiplied by (1 + the annual rate ÷ 12), then your monthly contribution is added. It stops when the balance reaches the target. At 0% interest, interest is simply zero and the same steps apply.

To find the monthly amount needed to hit a deadline, with r as the annual rate ÷ 12 and n as the number of months:

needed per month = (target − starting balance × (1 + r)ⁿ) × r ÷ ((1 + r)ⁿ − 1)

At 0% interest this becomes (target − starting balance) ÷ n.

Worked example (illustrative): a $5,000 goal, $500 already saved, $250 a month, a 4% annual rate, and an 18-month deadline.

| Result | Value |

|---|---|

| Months to reach the goal at $250 a month | 18 |

| Balance at that point | $5,160.66 |

| Your deposits (18 × $250) | $4,500.00 |

| Interest earned ($5,160.66 − $500 − $4,500) | $160.66 |

| Monthly amount needed to land exactly on 18 months | $241.32 |

With the rate set to 0%, the same goal takes 18 months and ends at exactly $5,000, and the amount needed is ($5,000 − $500) ÷ 18 = $250.

The calculator uses the annual rate divided by 12 each month. Banks compound in different ways, and rates change, so treat the result as an estimate. Goals that would take more than 60 years are reported as not reachable.

Read the full guide

For a month-by-month plan built around a large target, read our guide on how to save $10,000 in one year.