Rent or Buy? How to Weigh the Biggest Money Decision

"Renting is throwing money away" is the most repeated line in housing — and one of the least accurate. The real comparison is more interesting, and more balanced.

Plantrino Guides · Updated 2026 · About a 9-minute read

Few money decisions feel as weighty as choosing between renting and buying a home. It is wrapped up with security, identity, and family plans, not just spreadsheets. This guide sets the emotion aside for a moment and lays out how the numbers actually compare — so you can make the choice with clear information.

The Myth of "Wasted" Rent

Start by retiring the most common idea: that rent is money thrown away while a mortgage builds wealth. It is only half true.

Rent buys you something real — a place to live, with no exposure to maintenance costs or property-market falls. And a mortgage is not all wealth-building either. In the early years, the large majority of each mortgage payment is interest, which goes to the lender and builds you no equity at all. Both renters and buyers pay to be housed. The question is not "waste vs. no waste" — it is which set of costs suits your situation.

The True Cost of Buying

The headline price of a home is only the start. Buying carries costs that renting does not:

• Upfront costs — the deposit, plus transaction taxes and legal and inspection fees. These can add a meaningful sum on top of the deposit itself.
• Mortgage interest — especially heavy in the early years, as covered in our mortgage guide.
• Ongoing ownership costs — council rates, building insurance, and maintenance. Maintenance alone is often estimated at around 1% of the property's value each year.
• Selling costs — agent fees and other charges when you eventually move on.

Two of those deserve a flag for Australian buyers. Transfer duty (still widely called stamp duty) is set by each state and territory, and concessions for first home buyers differ from one border to the next — there is no national figure, so check the rules for your own state before you budget. Our stamp duty guide walks through how the tiered structure works. Strata levies are the other one: if you are buying an apartment or townhouse, quarterly levies can be a substantial ongoing cost that a house buyer never sees.

The True Cost of Renting

Renting looks simpler, and largely is, but it has its own economics:

• The rent itself — which tends to rise over time, broadly tracking inflation and the local market.
• The opportunity cost of the deposit — this is the subtle one. A renter has not tied up a large deposit in property, so that money can be invested elsewhere. Any growth it earns is a genuine financial benefit of renting.
• Less control and security — not a cash cost, but a real factor: a renter may face a move they did not choose.

Putting Real Numbers on It

Abstract cost lists are hard to weigh. Here is a single year, side by side. Every figure below is purely for illustration — prices, rents, rates and running costs vary enormously by suburb and change constantly. The point is the shape of the comparison, not these particular dollars.

Say Tom and Alice are looking at a $700,000 home. They have a 20% deposit of $140,000, so they would borrow $560,000. At an illustrative 6% over a 30-year term, the repayment works out at about $3,357 a month, or roughly $40,290 a year.

Where those numbers come from: of that first year of repayments, roughly $33,400 is interest and only about $6,900 reduces the loan. That is the front-loading in action — they paid over $40,000 and their equity grew by less than $7,000. On top of the loan they budget around $11,400 a year for running costs: council rates of about $2,600, building insurance around $1,800, and maintenance at roughly 1% of the property's value, or $7,000.

Renting the same kind of home might cost $650 a week — $33,800 a year. But the renter also still has the $140,000 that did not become a deposit. Invested at an illustrative 6%, that grows by about $8,400 in the first year, so their net position is roughly $25,400.

On those assumptions, renting looks about $19,400 cheaper in year one. Which is exactly the point where most rent-versus-buy comparisons stop — and exactly where they go wrong.

The Number That Decides Everything

The comparison above deliberately left out the one thing buyers care most about: what the property itself does. Add it back and the picture can flip completely.

If Tom and Alice's $700,000 home rises 4% in a year, that is $28,000 of growth. Their net year-one cost drops from about $44,790 to roughly $16,790 — comfortably ahead of the renter's $25,400. If the same home rises only 1%, that is $7,000, leaving them at about $37,790, and renting wins clearly. Somewhere around 2.8% annual growth, on these particular assumptions, the two paths break even.

That is worth sitting with. The entire answer swings on a growth rate that nobody — not an agent, not a forecaster, not a calculator — can know in advance. Property does not deliver a smooth annual percentage; it moves in bursts and flat stretches, and it varies street by street. Anyone who tells you with certainty which option "wins" is quietly assuming a number they cannot verify.

The honest use of a comparison like this is not to find the winner. It is to see how sensitive your own situation is. If the answer only tips to buying under optimistic growth assumptions, that is useful information about how much risk you are taking on.

The Break-Even Horizon

Because buying front-loads large costs — the deposit, the taxes, the fees — it takes time before ownership pulls ahead of renting financially. This is called the break-even horizon: the number of years you would need to stay for buying to become the cheaper option.

The key takeaway is about time in the home. If you expect to move within a few years, the heavy upfront and selling costs of buying often outweigh its advantages, and renting may well come out ahead. The longer you expect to stay, the more buying tends to win, as those one-off costs are spread thinner and equity slowly builds. There is no universal number — it depends on prices, rates, and rents where you live — but the principle is reliable.

To see why, follow Tom and Alice forward seven years on the same illustrative assumptions. At 4% annual growth the home would be worth around $921,000, and steady repayments would have brought the loan down to roughly $502,000 — equity of about $419,000. Selling costs of, say, 2% would take around $18,400 off that. Their renter counterpart's $140,000, compounding at 6%, would have grown to about $210,500. The buyers are ahead, but note how much of that gap arrived through property growth rather than through repayments, and how much of it disappears in a weaker market or a shorter stay. Our inflation guide covers why comparing future dollars to today's dollars is its own trap.

Common Mistakes

• Comparing rent to the mortgage repayment. This is the single most common error. Rent covers everything; a repayment covers only the loan. Rates, insurance, maintenance and strata levies sit on top, and they are the costs people forget to budget for.
• Forgetting the deposit could have been invested. A renter with a large sum sitting in a savings account is not really running the renting strategy — they are running a worse version of it. The opportunity cost only counts if the money is actually working.
• Treating upfront costs as a rounding error. Transfer duty, conveyancing, building and pest inspections, loan fees and moving costs are real cash that never comes back. See our first home buyer guide for what to include in the total.
• Buying with nothing left in reserve. Emptying every account to reach the deposit leaves no room for a broken hot water system or a few weeks between jobs. A buffer is part of the purchase cost, not an optional extra.
• Assuming rates and rents stay put. A repayment that is comfortable at today's rate may not be at a higher one. Stress-test the repayment at a rate above what you are offered before you commit — the house affordability guide explains how.
• Letting the timeline be wishful. "We will probably stay ten years" often turns into three when a job or a family plan changes. Be honest about how settled you actually are, because the timeline drives the whole result.

Questions to Ask Yourself

• How long do I realistically plan to stay? This single answer often decides the financial side.
• Do I have the upfront costs covered — with a buffer left over? Buying with nothing in reserve is risky.
• Could I handle a large, sudden repair? Owners carry that risk; renters do not.
• How much do I value flexibility versus stability right now? Life stage matters as much as maths.
• Would buying force me to stop saving or investing entirely? If every spare dollar goes to the loan, the comparison is no longer buying versus renting-and-investing.

Frequently Asked Questions

Rent versus buy is not a contest between a smart choice and a foolish one. Both are legitimate ways to put a roof over your head, each with its own costs and its own freedoms. Work out the numbers honestly for your situation, be realistic about how long you will stay, and then let your life plans — not a slogan — make the final call.