Home › Finance Calculators › Savings Goal Calculator
Savings Goal Calculator
Use this free savings goal calculator to turn a savings target into a plan. Enter the amount you want to reach, what you have saved already, your monthly contribution, and the annual return, and the tool finds how many months it will take — or, if you set a deadline, the monthly contribution that deadline demands — with a chart of your projected balance.
If you set a deadline, the tool also works out the monthly contribution you would need to reach the target on time. Leave it blank to find out how long your current contribution takes.
Projected balance over time
The chart shows your balance growing month by month at your chosen return, with the target drawn as a line. Where the two meet is when you reach your goal.
At $500 a month and a 5% return, the $50,000 target is reached in about 74 months.
How it works
A savings goal turns a vague wish — a house deposit, a new car, a holiday, an emergency fund — into a plan with a number and a date. The maths is simple in outline: you start with what you have, add a fixed amount every month, and the whole balance earns a return along the way. The return is what makes the plan faster than saving under a mattress, because the interest earned in one month earns interest of its own in the next. This calculator works the plan out in both directions: how long your current contribution takes, and how much you must contribute each month if you want to reach the target by a chosen deadline.
Each input has a clear job. The savings target is the amount you want to reach — the deposit, the price, or the fund size. The current savings is what you already have put aside for this goal; it earns a return from the first month, so even a small starting balance helps. The monthly contribution is the amount you will add every month, and the annual return is what the balance earns each year — a savings account rate, or a higher assumed return if the money is invested. The deadline is optional: set it in months if you have a fixed date in mind, and the tool will tell you the monthly contribution that deadline demands.
where r is the monthly return (annual return ÷ 12)
The formula has two parts. The first part grows your current savings at the monthly return for n months. The second part grows your monthly contributions: each contribution earns interest from the month it is made, so the contributions made early earn more than the ones made late. Add the two parts and you get the balance after n months. To find the time needed, the calculator tries month after month until the balance first reaches the target. To find the required contribution for a deadline, it works the formula backwards: it grows the current savings to the deadline, subtracts that from the target, and divides what is left by the growth factor of the monthly contributions.
Reading the answer is straightforward. Months to reach the goal is the headline: with your current contribution and return, that is how long the plan takes, shown in months and in years and months, with the month and year you would arrive. The total contributed is what you will have paid in yourself, and the interest earned is the difference between the final balance and everything you put in — the reward for saving early and letting the return work. If you set a deadline, the required monthly contribution is the amount you must save each month to hit the target on time, which you can compare with what you can actually afford: if the required amount is higher than your budget, you need a longer deadline, a lower target, or a higher return.
The chart shows the balance growing as a curve that bends gently upwards — the bend is compound growth, and it is why the last stretch of a goal is faster than the first. After 12 months of the example plan the balance is about $11,395; after 36 months it is about $25,184; and after 60 months it is about $40,420, with the final push to $50,000 taking only another 14 months.
Worked example
Suppose you want to save $50,000 for a house deposit. You already have $5,000 saved, you can put aside $500 a month, and your savings earn 5% a year. How long will it take?
Step 1: Work out the monthly return. 5% ÷ 12 = 0.4167% a month, or 0.004167 as a decimal.
Step 2: Find the month when the balance first reaches the target. The balance after n months is $5,000 × 1.004167ⁿ + $500 × (1.004167ⁿ − 1) ÷ 0.004167. Solving for the target of $50,000 gives n ≈ 73.95, so the goal is reached in 74 months — about 6 years and 2 months.
Step 3: Check what you will have paid in. Over 74 months you contribute 74 × $500 = $37,000, plus the $5,000 you started with, for $42,000 paid in. The balance at 74 months is about $50,035, so the return has added roughly $8,035 of interest. Enter the same figures in the calculator — target $50,000, current $5,000, monthly $500, return 5%, no deadline — and it returns exactly 74 months to reach the goal, with total contributions of $37,000 and interest earned of about $8,035.
Step 4: Test a deadline. If you want the deposit in 60 months instead, set the deadline to 60 and the calculator works out the required contribution: your $5,000 grows to $6,416.79 in 60 months at 5%, leaving $43,583.21 to be built by monthly contributions, which needs $640.87 a month. That is $140.87 more a month to arrive 14 months sooner — the choice is yours.
FAQ
How long will it take to reach my savings goal?
It depends on your starting balance, your monthly contribution, and the return. The calculator works it out month by month: your current savings grow, each monthly contribution is added and starts earning, and the goal is reached in the first month the balance hits the target.
How much do I need to save each month to reach my goal by a date?
Set the optional deadline in months and the calculator works the answer out backwards: it grows your current savings to the deadline, subtracts that from the target, and divides the remainder by the growth factor of the monthly contributions. The result is the required monthly contribution.
Does the interest really make much difference?
Yes, especially over long goals. In the worked example, the return adds about $8,035 over 74 months — money you never paid in. The effect grows with time, because interest earned in one month earns interest of its own in the next.
What return should I use?
Use the rate your money actually earns: a savings account rate for cash, or a higher assumed return if the money is invested. Be honest — assuming a high return makes the plan look faster than it is, and investment returns are never guaranteed.
What if I cannot afford the required monthly amount?
Three levers can close the gap: give the goal more time, lower the target, or find a higher return. Small increases early help the most, because early money has the longest time to grow — even $50 more a month can cut months off a long goal.