How Long to Save a Deposit in Australia

Summary

This calculator determines how long it takes to save a home deposit in Australia, accounting for compound interest on savings. With the national median dwelling value at approximately A$1,045,400 (CoreLogic, February 2026), a 20% deposit to avoid Lenders Mortgage Insurance (LMI) is around A$209,080 — a significant savings target that typically takes years to reach.

How it works

The calculator simulates savings growing month by month:

1. Current balance earns interest: balance x (1 + monthly rate)
2. Add monthly contribution: balance + contribution
3. Repeat until balance reaches the target deposit

Australian-specific considerations

Deposit thresholds and LMI:

• 20% deposit (80% LVR): Avoids LMI entirely. This is the benchmark most lenders and financial advisors recommend.
• 10-19% deposit: LMI applies but is more affordable. LMI is a one-off premium (A$5,000-A$40,000+) that can be paid upfront or capitalised into the loan.
• 5% deposit (95% LVR): Available from some lenders, but LMI costs are substantial. The federal Home Guarantee Scheme allows eligible first home buyers to purchase with as little as 5% deposit without paying LMI.

Home Guarantee Scheme (federal):

• First Home Guarantee: 5% deposit, no LMI, property price caps vary by location (e.g., A$900,000 in Sydney, A$700,000 in regional areas)
• Regional First Home Buyer Guarantee: 5% deposit for regional buyers
• Family Home Guarantee: 2% deposit for single parents

First Home Super Saver Scheme (FHSSS): Eligible buyers can make voluntary super contributions (up to A$15,000/year, A$50,000 lifetime cap) and withdraw them for a home deposit. Contributions are taxed at 15% (inside super) rather than your marginal rate, providing a tax benefit of up to 30 cents per dollar for higher-income earners.

First Home Owner Grant (FHOG): State and territory grants of A$10,000-A$30,000 for purchasing or building a new home (not established homes in most states). Eligibility and price caps vary by jurisdiction.

Worked example

Target: A$1,045,400 property with 20% deposit. Current savings: A$50,000. Monthly contribution: A$3,000. Savings rate: 4.50%.

1. Target deposit: A$1,045,400 x 20% = A$209,080
2. Gap to fill: A$209,080 - A$50,000 = A$159,080
3. Monthly rate: 4.50% / 12 = 0.375%
4. Month 1: A$50,000 x 1.00375 + A$3,000 = A$53,188
5. Month 2: A$53,188 x 1.00375 + A$3,000 = A$56,387
6. Simulation result: Balance reaches A$209,080 at approximately month 46 (3 years 10 months)
7. Without interest (0%): A$159,080 / A$3,000 = 54 months — compound interest saves approximately 8 months

If the buyer qualifies for the Home Guarantee Scheme (5% deposit), the target drops to A$52,270, reachable in approximately 1 month with the existing A$50,000 savings.

Key differences from other markets

• Lenders Mortgage Insurance (LMI) creates a hard incentive to save 20% in Australia, whereas the UK Mortgage Guarantee Scheme supports 95% LTV without an equivalent borrower-paid insurance cost.
• The First Home Super Saver Scheme lets Australians use the tax-advantaged superannuation system to accelerate deposit savings — a mechanism unique to Australia with no direct equivalent in the UK or US.