Rent vs Buy Calculator

The Rent vs Buy Calculator helps you decide whether renting or purchasing a home makes more financial sense over a given time horizon. It compares the recurring cost of renting against the full cost of ownership, which goes far beyond the monthly mortgage payment to include the down payment, property taxes, homeowners insurance, maintenance, closing costs, and the opportunity cost of capital tied up in equity. By modeling both paths side by side, the tool surfaces the true break-even point where buying starts to beat renting.

Under the hood, the calculator amortizes your mortgage to project principal paydown and interest over time, then layers in appreciation assumptions for the home's value and an alternative investment return on the money you would have invested instead of buying. It also accounts for rent inflation, since rent typically rises year over year, and for the tax treatment of mortgage interest where applicable. The result is a cumulative cost comparison that shows how the two scenarios diverge as the years pass.

Common use cases include first-time buyers weighing whether to keep renting or commit to a purchase, people relocating who are unsure how long they will stay in a city, and investors deciding whether a property pencils out versus deploying cash elsewhere. The single most important input is how long you plan to stay, because buying carries high upfront transaction costs that only amortize favorably over a longer hold.

A practical tip is to run the calculator with conservative appreciation and investment-return assumptions rather than optimistic ones, since small changes in those rates dramatically shift the break-even year. Pair it with a Mortgage Calculator to nail down your monthly payment and a Discount Calculator if you are negotiating purchase price, and revisit the analysis whenever interest rates move.