Savings goal calculator
Work out the monthly deposit needed to reach a target, or how long a deposit will take.
What the result means
A savings goal is a target date plus a deposit plan. Interest helps, but most short-horizon goals are mostly deposits.
How it is calculated
Solve PMT from FV = P(1+i)^n + PMT × ((1+i)^n − 1)/i, with monthly i = r/12
- FV: Goal.
- P: Amount already saved.
- PMT: Monthly deposit.
Contribution mode rearranges the annuity formula. Time mode solves for n and reports years.
Assumptions
- Estimates only — not tax, legal, credit or financial advice. Check the official source or your contract before relying on a figure.
- Fixed monthly deposits and a constant rate.
- No tax on interest.
Worked example
$20,000 in two years from $2,000, at 0% for a check
If the account paid nothing, 24 deposits must cover $18,000.
- Gap
- $20,000 − $2,000 = $18,000
- Monthly
- $18,000 ÷ 24 = $750
A positive rate reduces the required deposit. The calculator solves that adjustment.
Returns are not guaranteed
A 4% figure might match a high-interest savings account in some years and be optimistic in others. For a house deposit, pair this with the deposit and LVR calculators rather than assuming investment-like returns.
On a two-year $20,000 goal with $2,000 already saved, the 0% check is $750 a month. A 4% rate trims that deposit, but most of the $18,000 gap is still money you transfer, not interest the bank adds. Do not plan a short-horizon goal as if it were a decade of compounding.
Questions
Should I include inflation?
This target is in today’s dollars. If prices will rise, increase the goal rather than the rate unless you have a real (inflation-adjusted) return.
Is this the same as the compound interest calculator?
Compound interest grows a balance forward. This page solves backwards for the monthly deposit or the time you need to hit a named target.
Read the background
A guide explains the rules behind this calculation in full, without any inputs to fill in.
Related calculators
- Compound interestProject a lump sum — with optional regular deposits — as interest compounds.
- Deposit goalSee the monthly savings needed to reach a home deposit target from a price and deposit percent.
- SalaryEstimate weekly, fortnightly, monthly and annual take-home pay from an Australian resident salary, using ATO PAYG withholding for each pay and year-end tax for the annual figure.
Sources
Moneysmart (ASIC)
Last reviewed 2026-08-19
Moneysmart (ASIC)
Last reviewed 2026-08-19
Money · Last reviewed 19 August 2026
Estimates only. Not tax, legal or financial advice. Check official sources before relying on a figure.
Spotted a mistake? Contact us.
Printed from OzCalc (ozcalc.com). Last reviewed 19 August 2026. Estimates only — not tax, legal or financial advice.