Finance

Personal Future Value Monthly Savings Calculator (5 Years)

Estimate the future value of regular monthly savings. This personal version uses a 5-year planning term as its starting point.

The Future value result is the total amount your monthly deposits would grow to by the end of 5 years at the annual rate you entered, including interest earned along the way, so it will be higher than the sum of your deposits alone; it is a planning estimate, not a guaranteed balance, because the rate and the deposit pattern would need to stay unchanged.

Formula

Future value uses the monthly rate and the number of monthly deposits to grow each deposit with interest.

How it works

Each monthly deposit earns interest from the month it is made until the end of the term.

Worked example

Monthly deposit $500, annual rate 6%, term 5 years. First, the monthly rate is 6% divided by 12, which is 0.005, and the number of deposits is 5 times 12, which is 60. Using the future value formula, the future value is $500 times ((1.005 to the power of 60) minus 1) divided by 0.005, which is $34,885.02. Over 60 deposits you pay in $30,000.00, and interest adds $4,885.02, which is 14.0% of the future value.

Who this term suits for a person: A 5-year term suits a person saving for a near, fixed goal who can afford $500 even in a tight month, for example topping up a house deposit, paying for a wedding, replacing an old car before repair bills grow, or rebuilding an emergency fund. The trade-off is clear: the goal date is close, so interest is only a small bonus and the deposits do most of the work.

FAQs

How does monthly saving grow?
Regular deposits grow because each deposit earns interest, and that interest then earns more interest.

Is this personal calculator exact?
No, it is an estimate for planning only, based on the numbers you enter.

Are these figures financial advice?
No, they are estimates for planning only, not financial advice. Check with a qualified adviser for decisions involving large sums.

Is $500 a month for 5 years enough for a house deposit top-up?
It can be for a top-up: the future value is $34,885.02, so it covers a top-up of about $30,000 to $35,000. It is not a full deposit in an expensive market, so check the deposit you will actually need in 5 years. If the target is larger, raise the monthly deposit or extend the term, and test the new figure in the calculator.

Why is interest only $4,885.02 after 5 years?
Because compounding needs time. You pay in $30,000 and interest adds $4,885.02, which is 14.0% of the $34,885.02 future value. The first deposits earn interest for up to 60 months, but the last deposits earn almost nothing, so over a short term the deposits, not the interest, build most of the pot.

What happens if I stop after 3 years instead of 5?
After 36 deposits you have paid in $18,000 and the future value is $19,668.05, with $1,668.05 of interest. That is $15,216.97 less than the 5-year future value of $34,885.02, because you miss 24 deposits worth $12,000 plus the growth those deposits would have earned.

Estimates only, not financial advice. Figures are approximate and do not include all fees, taxes, or changing rates unless stated.