How it works
Comparing a mortgage payment with rent isn't enough. Owning also means property tax, insurance, maintenance and big one-off costs to buy and sell. Renting means your down payment stays invested instead. So the calculator follows both paths month by month:
- If you buy, you pay the mortgage, tax, insurance, maintenance and any HOA and PMI. The home's value grows, and your loan shrinks.
- If you rent, the down payment and closing costs you didn't spend are invested from day one, and your rent rises each year.
- Each month, whichever path costs less invests the difference, so both paths spend exactly the same money.
Buy: home value − selling costs − loan left + investments
Rent: investments
The side with more wealth at the end wins. The break-even rent is the monthly rent at which the two come out equal over the years you'll stay.
Worked example
A $400,000 home with 20% down at 6.9%, against renting a similar home for $2,200 a month. Owning costs about $2,958 in the first month once tax, insurance and 1% a year of maintenance are counted.
If you stay 7 years, with home prices and rent both rising 3% a year and investments returning 6%, renting leaves you about $32,661 better off. Buying would win if the rent were above $2,490 a month.
Over the long run the picture changes: buying pulls ahead after 17 years. And at $2,800 rent, buying comes out $34,829 ahead after 7 years.
What tips the balance
- How long you stay. Buying and selling costs are paid once, so they weigh heavily on a short stay and fade over a long one.
- The price-to-rent gap. Where homes cost many years of rent, renting tends to win. Where rents are high compared with prices, buying does.
- Mortgage rates. A higher rate raises the cost of owning month after month; see how it moves your payment in the mortgage calculator.
- Growth assumptions. Home prices rose 2.1% in the year to mid-2026 on FHFA's national index, and local markets vary widely. Try a few values: small changes compound over the years.
Questions people ask
Is rent just money thrown away?
No more than mortgage interest, property tax and maintenance are. Both paths have costs you never get back. Rent buys you a home and flexibility; owning buys you a home and a leveraged bet on its price. This calculator counts both honestly.
What does it leave out?
Taxes on investment gains and home sale profits, and the mortgage interest deduction, which most households don't itemize for. It also assumes the renter really invests the difference; if you wouldn't, buying works as a kind of forced saving.
How much house can I afford?
Try the home affordability calculator. It works back from your income and debts to the highest price that fits.
Sources
- FHFA House Price Index: U.S. house prices rose 2.1% in the year to 2026 Q2
- Consumer Financial Protection Bureau: Loan Estimate explainer (closing costs)
- Consumer Financial Protection Bureau: what is private mortgage insurance?
- Freddie Mac: Primary Mortgage Market Survey (weekly average rates)
Reviewed September 26, 2026 by The Dollars World team. How we build and check our calculators · Our data and formulas. This is general information, not financial advice.