TheSharpDollar

Housing · Honest math, no agenda

Rent vs buy: the honest math nobody shows you

"Buying is always better than renting. Renting is throwing money away." You've heard it your whole life. It's also, often, wrong — not because buying is bad, but because the comparison almost everyone makes is the wrong one.

The mistake: comparing rent to a mortgage payment

Most rent-vs-buy takes line up your rent against a mortgage payment and stop there. But owning isn't just the mortgage. It's property tax, insurance, maintenance, and closing costs, on the way in and the way out. And renting isn't just rent — it's rent plus whatever you earn on the money you didn't sink into a down payment. The only fair question is: after a set number of years, who has more actual net worth?

A worked example

Take a $450,000 home (or renting something comparable for $2,200/month), 15% down, a 6.75% mortgage, 4% annual home appreciation, and a 7% return if you invest the difference. Plan to stay 7 years. Here's what the honest comparison produces:

In this ordinary scenario, renting and investing the difference comes out about $49,573 ahead, and stays ahead across the full 30-year projection. The drivers: that ~$70,000 upfront gap working in the market, an expensive mortgage rate where early payments are mostly interest, and selling costs that take a bite of equity when you eventually sell.

Run your own numbers →Free Rent vs Buy calculator. No sign-up, no ads. Change any assumption and watch the winner flip.

When buying wins

This isn't an argument for renting. Change the assumptions and owning pulls ahead: a longer time in the home, higher appreciation, a lower mortgage rate, or fast-rising rents can all flip the result. That's the entire point — a one-percent change in any input can change the answer, so the honest move is to run your numbers rather than trust a slogan.

What the math can't capture

This is a financial comparison — it counts the money. It doesn't count that owning lets you paint the walls, that no landlord can make you move, or that a fixed payment feels safer than rent that can rise. Those are real and worth something. What the calculator does is tell you the price of that choice, so you can decide whether the stability is worth it to you.

The numbers above come from TheSharpDollar's Rent vs Buy calculator using the sample scenario. Your result depends on your real price, rent, rate, and timeline — run it with your own inputs.