Buy vs rent calculator

Will buying actually leave you better off?

Compare the wealth each choice leaves behind, not just this month's payment. The model gives both sides the same starting cash and monthly budget, then tracks the home, mortgage and investments together.

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The homeWhere is it?
Buyer type
The alternative
Advanced settingsGrowth, maintenance, investment returns and transaction costs
Long-run assumptions
10-year result
Buying by £111,753

Both paths use the same starting cash and monthly housing budget. Any spare money is invested at 5%.

Net wealth at the end
Buy£198,102Home equity after selling costs, plus invested monthly savings
Rent£86,349Deposit, purchase cash and monthly savings left invested
Home value£403,175
Mortgage left£204,228
Mortgage payment today£1,292.05
Buying: interest, maintenance and transaction costs£147,269
Rent paid£188,255
Break-even

Buying first moves ahead around year 1. A shorter stay can still favour renting.

What this means
  • Buying has the stronger modelled outcomeThe gap is £111,753, but house prices and investment returns can easily move a long-range result.
  • The comparison treats principal as wealth£104,274 of mortgage interest is a cost; the principal you repay becomes equity instead.
  • Lifestyle flexibility is not pricedMoving freedom, security of tenure, renovation choices and major one-off repairs still matter even when the pounds are close.

A projection from your assumptions, not a house-price forecast or financial advice. Buying and selling costs vary.

Method

How this calculation works

The buyer starts with home equity and pays mortgage interest, maintenance, purchase tax and selling costs. The renter invests the deposit and buying cash instead. Each month, whichever option costs less invests the difference. House prices, rent and investments compound monthly using your assumptions.