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Rent vs Buy Calculator
See whether renting or buying costs less over the years you plan to stay. Enter the home and rent details, then press Calculate to compare the full cost of each path.
Written by TopicDrill Editorial Team·Updated June 2026
Cumulative net cost (lower is better)
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How the rent vs buy calculator works
The honest answer to renting versus buying is rarely about the monthly mortgage being higher or lower than the rent. It is about total cost over time once you account for the money you sink into a home, what that money could have earned elsewhere, and what you walk away with when you sell. This tool runs both stories side by side and tells you which one leaves you better off.
The chart plots the cumulative net cost of each path, so the line that ends up lower is the cheaper choice. Early on the buying line sits high because of the down payment and closing, then it bends down as the loan is paid off and the home appreciates. The point where the two lines cross is your break-even, the year buying starts to pay off.
A quick example
On a $400,000 home with 20 percent down at 6.5 percent, owning costs more than $2,200 of rent in the early years once you add taxes, insurance and upkeep. Stay seven years with 3.5 percent appreciation and the sale proceeds plus paid-down principal can flip the comparison so buying edges out renting. Shorten the stay to three years and renting wins easily, because there is no time to recover the upfront costs.
Things to keep in mind
Every number here is an assumption about the future, and small changes to appreciation, rent growth or investment return can swing the verdict. Treat the result as a guide, not a guarantee, and try a few scenarios. For a broader checklist on the decision, the CFPB owning-a-home guide is a neutral resource. Once you lean toward buying, size up the loan with our mortgage calculator.
Frequently asked questions
How does a rent vs buy calculator decide which is cheaper?
It simulates both paths month by month over the years you plan to stay. The buying side adds up the down payment, mortgage, property tax, insurance and upkeep, then subtracts what you net from selling the home at the end. The renting side adds up the rent you pay and subtracts the growth of money you invest instead of tying it up in a house. The path with the lower net cost wins.
Why does the time you stay matter so much?
Buying carries large upfront and exit costs, the down payment, closing and the agent fees when you sell. The longer you stay, the more years those one-time costs get spread across, and the more time the home has to appreciate. Stay only a couple of years and renting almost always wins; stay long enough and buying usually pulls ahead. The point where they cross is your break-even.
What is the opportunity cost of a down payment?
A buyer locks a large sum into the home as a down payment. A renter could invest that same money instead. This calculator credits the renter with the growth that money could have earned at the investment return you set, which is why renting is not simply the rent you pay.
Does this include the tax benefits of owning a home?
Not directly. Mortgage interest and property tax deductions can lower the cost of owning for some buyers, but they only help if you itemize and they vary widely by income and location. Treat the result as a pre-tax comparison and adjust for your own situation, ideally with a tax professional.
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