Understanding the Rent vs Buy Decision
The rent versus buy question is one of the most significant financial decisions most UK adults face. There is no universally correct answer — the right choice depends on your local housing market, how long you plan to stay, your alternative investment options, and personal priorities. This calculator gives you the numbers; the decision is yours.
How this calculator works
Both scenarios start from the same cash position: the deposit amount. In the buy scenario, that cash becomes equity in a property. In the rent scenario, it is invested and grows at your chosen investment return. Each month, the buyer pays a mortgage payment and maintenance costs; the renter pays rent. If the mortgage payment is higher than rent, the renter invests the difference each month. If rent is higher, the buyer's advantage is larger.
After the comparison period, the buyer's net wealth is property equity (property value minus outstanding mortgage, minus upfront transaction costs). The renter's net wealth is their investment portfolio.
The break-even point
Early in the comparison, renting often wins because transaction costs (stamp duty, legal fees) immediately reduce the buyer's starting position, and most of the initial mortgage payments go towards interest rather than reducing the loan. Over time, as equity builds and the property value grows, buying tends to pull ahead. The year-by-year table shows you exactly when the crossover point occurs under your assumptions.
What this calculator doesn't model
Real life adds complexity: selling costs when you eventually move (estate agent fees of 1–3%), the ability to make home improvements that add value, the security of ownership versus the flexibility of renting, and non-financial factors like stability for families. CGT on a buy-to-let sale isn't relevant here (this models owner-occupation), and your main home is CGT-exempt. For a fuller picture of your property finances, see the Mortgage Calculator and Stamp Duty Calculator.
Frequently Asked Questions
Is it better to rent or buy in the UK right now?
It depends on your local market and time horizon. With mortgage rates elevated relative to recent history and house prices still high in most regions, renting is financially competitive over short periods (under 5 years). Over longer periods (10+ years), buying historically tends to build more wealth because of equity accumulation and house price growth. Run this calculator with your specific numbers — the answer varies widely by city and individual situation.
What annual house price growth should I use?
UK house prices have grown at around 3–4% per year on average over the long run, though with significant regional variation and periods of both strong growth and decline. Using 3% is a conservative but reasonable assumption. You can also run the calculator at 0% to see what happens if prices stay flat — this tests whether the equity-building effect of mortgage repayments alone is enough to beat the renter's investment returns.
How much should I budget for maintenance as a homeowner?
A commonly used rule of thumb is 1% of the property value per year for maintenance and repairs (so £3,000/year on a £300,000 house). Newer properties may need less; older properties, especially those with older boilers, roofs, or windows, may need more. This is one of the hidden costs of ownership that renters avoid. The calculator defaults to 1% but you can adjust it.
Does renting mean I'm throwing money away?
No — this is a common misconception. Rent buys you a place to live, just as mortgage interest (the majority of early mortgage payments) does. The key difference is that mortgage principal repayments build equity whereas rent does not. However, a renter who invests their deposit and monthly savings can build wealth just as effectively as a buyer, depending on investment returns versus house price growth. "Throwing money away on rent" ignores the foregone investment returns on the deposit.
What transaction costs does buying involve?
The main transaction costs for buyers are stamp duty (SDLT), solicitor and conveyancer fees, survey costs, and mortgage arrangement fees. This calculator estimates stamp duty automatically (standard rates) and adds £3,000 for other costs. For an exact stamp duty figure, use the Stamp Duty Calculator. First-time buyers pay no stamp duty on properties up to £300,000, which significantly improves the buy case in this calculator.