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Australia-wide · The big question

Rent vs buy calculator

Whether buying or renting and investing the difference leaves you better off, year by year, under your own assumptions.

FY 2026-27 rates · verified against the official sources.

Example figure — replace it with your own. Pick your state to fill in the stamp duty from its schedule, or type your own figure.

Starts at the RBA average new owner-occupier variable rate, August 2026 — use your own rate.

Growth and return start at example figures, not forecasts — test several. Fixed assumptions (shown, not hidden): 30-year loan · rents rise 3%/yr · owner costs 1.2% of value/yr (rates, insurance, maintenance).

Your tally · 10 years

Buying ahead by

$56,606

Buying pulls ahead around year 5 of 10.

How it’s worked out

Buying: repayment vs rent (month 1)$4,425 vs $2,817
Net position — buying$605,413
Net position — renting & investing$548,807

Next: the cash you need to buy → Upfront costs of buying a house

Before tax on the renter's investment returns; selling costs at the horizon excluded on both sides. Growth and return are effective annual rates (4% means exactly 4% over a year, on both sides), and negatives are allowed. The output is only as good as your assumptions — test several.

The honest version: not "rent money is dead money", but a month-by-month comparison of your net position buying versus renting and investing the difference — under your assumptions.

The only honest way to compare renting and buying

Slogans fail in both directions. "Rent money is dead money" ignores that the renter can invest the deposit and the weekly savings; "renting and investing always wins" ignores leverage — the buyer gets growth on the whole property while only putting in a deposit. So this calculator refuses a slogan and runs the ledger instead, month by month: the buyer pays the loan and the running costs and rides property growth; the renter invests the deposit, the upfront costs, and every dollar of monthly difference. Whoever ends the horizon with more net worth wins under those assumptions.

How much growth does buying need? Same inputs, four futures

Default scenario ($750,000 home, $650/week rent, 6% returns), only property growth changing:

How much growth does buying need? Same inputs, four futures
Property growthBuying netsRenting netsVerdict at 10 years
0% p.a.$245,230$524,023Rent +$278,793
2% p.a.$409,475$535,751Rent +$126,276
4% p.a.$605,413$548,807Buy +$56,606
6% p.a.$838,365$563,344Buy +$275,021

The pattern is the whole story: buying is a leveraged bet on growth. In this example renting and investing is ahead at 0% and 2% growth a year, and buying at 4% and 6%. The un-modelled factors cut both ways too — owners get stability and a tax-free asset, renters get flexibility and no maintenance surprises.

Worked example

$750,000 home vs $650/week rent. The buyer puts down $150,000 plus $30,000 costs and pays $4,425/month all-in at 6.2%; the renter pays $2,817/month and invests the $180,000 plus the monthly difference at 6%. After 10 years at 4% growth: buyer equity $605,413 vs renter portfolio $548,807 — buying ahead by $56,606, crossing over around year 5.

Leaning towards buying? Price the entry properly: stamp duty and LMI are the two big upfronts this comparison asks you to include. Choosing a state above fills in the duty; LMI and legals are yours to add.

Staying put for now? The rent here is weekly and rises 3% a year by assumption. If your lease quotes a calendar month, the rent calculator converts it the way your state does, and shows the earliest date the rent can next go up.

Frequently asked questions

Is it cheaper to rent or buy in Australia?
There is no universal answer, and anyone who gives one is guessing at your numbers. Buying comes out ahead only when the property’s growth, magnified by the loan, beats what a renter earns on the deposit and on every month’s spare cash. The honest comparison is net worth after 5–15 years under your assumptions, which is exactly what this calculator computes.
How does this rent vs buy calculator work?
Month by month it tracks the buyer (repayments, running costs, property growth, shrinking loan) and the renter (who invests the deposit plus upfront costs, and every month invests the difference between the buyer's outgoings and the rent). At your horizon it compares buyer equity with the renter's portfolio.
What does buying add on top of the repayments?
Upfront: stamp duty, legals and possibly LMI — pick a state and the duty is filled in for you; the rest depends on your quotes. Ongoing: council rates, insurance, maintenance and body corporate, modelled here at 1.2% of the property's value per year. These are the costs renters skip, and why the invested difference matters.
Does the comparison include tax?
The family-home side is largely tax-free in Australia (no CGT on your main residence). The renter's investment returns are shown before tax — so if the renter would pay tax on those returns, buying looks slightly better than the raw numbers suggest.
What if I can buy with a 5% deposit under the 5% Deposit Scheme?
Enter your actual deposit and set upfront costs without LMI: the government guarantee takes its place, though the lender can charge it later if the guarantee ends while the loan is above 80% of the value. A smaller deposit means bigger repayments and slower equity, but also less cash the renter would otherwise invest — run both scenarios and compare.

Keep tallying

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Method & assumptions

Month-by-month simulation: standard amortised repayments; property value compounds monthly at your growth rate; owner costs 1.2% of current value per year; rent rises 3% annually; the renter's portfolio compounds monthly at your return rate with the buyer-minus-rent difference contributed (or withdrawn) each month. Arithmetic checked 28 August 2026. General information only — not financial advice.

Assumptions

Fixed assumptions behind the comparison: a 30-year loan; rents rising 3% a year; owner costs (rates, insurance, maintenance) of 1.2% of the property's value annually. The renter starts with the buyer's deposit and upfront costs fully invested and banks the monthly difference between the two paths; investment returns are before tax, and selling costs at the horizon are excluded on both sides. Choosing a state fills the upfront costs with that state’s stamp duty on the price, from the same engine as the state calculators: owner-occupier rates, or first home buyer rates for an established home when that box is ticked. Every other number is yours to set. The engine is covered by automated accuracy tests — see the methodology. General information only — not financial advice.