Rent vs Buy: when does buying actually win?
"Rent is dead money" is one of the most repeated lines in personal finance — and one of the most misleading. Buying isn't automatically better; it's better after a certain number of years, and only when the maths works in your favour. The honest answer to "should I rent or buy?" is almost always: it depends on how long you'll stay.
The breakeven horizon
Every purchase has upfront costs that renting doesn't: stamp duty, solicitor fees, surveys, mortgage arrangement fees, and the dent in your savings from the deposit. Sell within a couple of years and those costs swamp any gain in equity. The breakeven horizon is the number of years you need to stay before owning beats renting on pure cost — typically 5 to 7 years in most UK markets, longer in expensive cities and shorter in cheaper ones.
Stay shorter than that and you're better off renting. Stay much longer and ownership pulls ahead, often dramatically.
What renting actually pays for
Rent isn't dead money — it pays for flexibility, no maintenance liability, and no exposure to property prices going down. If you might move cities for work, want to test a neighbourhood before committing, or simply value not having to think about boilers, that's worth real money.
The right comparison isn't "rent vs mortgage payment" — it's "rent vs the true monthly cost of owning."
The true cost of owning
Mortgage payment is just the headline. The true monthly cost of owning includes:
Maintenance. Budget around 1% of the property value per year — averaged across boilers, roofs, decorating, appliances, and the unexpected. On a £350,000 home, that's roughly £290/month put aside.
Buildings insurance. £20–£40/month for most homes.
Service charge / ground rent if leasehold. Easily £200/month on a flat.
Opportunity cost on the deposit. A £70,000 deposit invested at 5% would earn £3,500/year — money you've forgone by tying it up in the house.
When buying clearly wins
The case for buying is strongest when: you're confident you'll stay 7+ years, your deposit is large enough to keep the loan-to-value ratio sensible, monthly payments fit comfortably inside the 30% affordability rule, and local rents are close to or above the true cost of owning the equivalent property.
When renting clearly wins
Renting wins when: you might move within 3–4 years, your job or relationship situation is genuinely unsettled, prices in your area are stretched relative to rents (a classic late-cycle signal), or buying would force you to stretch the mortgage term to 35+ years just to make payments work.
Run the numbers
Rent vs Buy Calculator
Enter your rent, target purchase price, and assumptions — see your breakeven horizon and the true monthly cost of each path side by side.
Open the calculator →The lifestyle factor that ruins the spreadsheet
Numbers aside, ownership comes with two things renting can't replicate: stability (no landlord ending the tenancy, no surprise rent hikes) and the freedom to make a place yours. For some people that's worth paying a small premium over the renting path. For others — especially in their twenties or in fast-changing careers — flexibility is worth more than equity.
The calculator gives you the financial answer. The lifestyle answer is yours.