Buy vs Rent Calculator
Compare the true long-term cost of buying versus renting a property.
Buying
Renting
Opportunity Cost
Buying is better
Monthly Cost (Buy)
$2,786
Mortgage + tax + maintenance
Monthly Cost (Rent)
$2,020
Rent + insurance
$318,804
Home value − loan balance
Rent Net Wealth (yr 10)
$85,465
Invested down payment + savings
Break-even point Year 1 — buying starts building more wealth than renting from this year.
Net Wealth Over Time
Buy equity = home value − loan balance. Rent wealth = down payment invested at 10%/yr (S&P 500 reference) + monthly savings invested.
Cumulative Out-of-Pocket Costs
Buy costs include upfront (down payment + transaction costs), mortgage payments, maintenance, and property tax. Rent costs include rent and insurance.
Is It Better to Buy or Rent a Home?
The buy vs rent decision is one of the most consequential financial choices most people make. The answer depends on your time horizon, local market conditions, mortgage rates, and — critically — what you would do with the down payment if you didn't buy.
The Opportunity Cost of the Down Payment
This calculator explicitly models the opportunity cost: if you rent instead of buy, you keep your down payment and transaction costs liquid. Invested in a diversified index fund tracking the S&P 500, that capital has historically grown at ~10%/year nominally (~7% after inflation). Over 10-20 years, this compounding effect is substantial and often overlooked in simple buy-vs-rent comparisons.
Key Variables That Tip the Balance
Buying tends to win when: (1) you stay for 7+ years, (2) home appreciation exceeds the investment return, (3) transaction costs are low, and (4) the price-to-rent ratio is below 20. Renting tends to win when: (1) you move within 5 years, (2) the market is overvalued (high P/R ratio), (3) transaction costs are high (e.g. Portugal, Germany), and (4) you invest the difference consistently.
Country-Specific Considerations
Transaction costs vary enormously: ~3.5% in the US, ~7.5% in Portugal (IMT + IS + notary), ~9-10% in Germany and Spain. These high upfront costs mean buying in Europe requires a longer break-even horizon — often 7-10 years — before it outperforms renting + investing.
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