Rent vs. Buy: How to Run the Numbers Honestly

"Rent is throwing money away" is one of the most repeated lines in personal finance, and one of the most misleading. Homeowners have money they don't get back too: mortgage interest, property taxes, insurance, maintenance and the costs of buying and selling. The real question isn't whether renting or owning costs money, since both do, but which one costs you less for your situation and timeline.

This guide gives you a framework to compare them fairly, with a worked example at this week's mortgage rates.

Compare unrecoverable costs, not total payments

Comparing your rent with a full mortgage payment is misleading, because part of the mortgage payment, the principal, builds equity you keep. A fairer comparison looks at the unrecoverable costs of each option: money that's gone and doesn't build wealth.

Renting's unrecoverable costs:

• Rent
• Renter's insurance

Owning's unrecoverable costs:

• Mortgage interest
• Property taxes
• Homeowners insurance and any mortgage insurance
• Maintenance and repairs
• HOA dues, if any
• The opportunity cost of your down payment (what that money could have earned elsewhere)
• Transaction costs: closing costs when you buy and selling costs when you leave

Principal payments aren't on the owner's list because they turn into equity. Home price appreciation or depreciation affects the result too, and nobody can predict it reliably.

Worked example: first-year unrecoverable costs

Let's estimate the first year of owning a home at the national median sales price of $393,300 (Q3 2026) with 10% down, at this week's 30-year average of 7.24% (October 29, 2026). All non-rate assumptions are illustrative.

That's about $3,151 a month in unrecoverable costs, before considering any change in the home's value, tax effects or transaction costs. If you can rent a comparable home for less than that, renting may be cheaper on an annual basis right now. If comparable rent costs more, buying may come out ahead.

The interest figure is approximate: in the early years of a mortgage, most of each payment goes to interest, and that share falls slowly over time.

Time is the biggest factor

Buying and selling a home are expensive. Closing costs when you buy, plus agent commissions and other selling costs when you leave, can add up to a significant share of the home's price. Those costs are spread over however long you own the home. The longer you stay, the more time equity growth and the fixed payment have to offset them.

A common rule of thumb is that buying tends to make more sense the longer you plan to stay, often five years or more, but the real break-even depends on local prices, rents, rates and how values change. If there's a real chance you'll move in two or three years, renting often wins.

Non-financial factors matter too

Reasons people choose to own:

• Stability and control: no landlord deciding to sell or raise rent sharply
• Freedom to renovate and personalize
• A fixed principal-and-interest payment with a fixed-rate loan
• Forced savings through principal payments

Reasons people choose to rent:

• Flexibility to move for work or life changes
• No responsibility for major repairs
• Lower upfront cash needs
• The ability to invest the down payment money elsewhere

Neither choice is morally better. A renter who invests consistently can build substantial wealth, and an owner who stretches to buy can end up house-poor.

Don't forget the renter's side of the ledger

A fair comparison also counts what renters can do with the money they don't spend on a down payment, closing costs and repairs. If a renter invests that money and adds to it each month, it can grow too, though with market risk. Renters also face costs owners don't, such as rent increases at renewal and the cost of moving when a lease ends. Include those in your comparison, especially in markets where rents have been rising quickly.

How to run your own comparison

1. Find comparable rent for the kind of home you'd buy, in the same area.
2. Estimate the full cost of owning, including taxes and insurance. Your state page shows effective property tax rates and closing costs.
3. Use today's rates from our rates page and model payments in the rent vs. buy and mortgage calculators.
4. Be honest about how long you'll stay.
5. Stress-test it: what if values stay flat for several years, or repairs cost more than expected?

Common questions

Does buying always build wealth faster? Not always. Ownership forces savings through principal payments and can benefit from appreciation, but renters who consistently invest the difference can also build wealth. Discipline matters in both cases.

What if rents keep rising? Rising rents make buying relatively more attractive over time, especially with a fixed-rate mortgage. But home prices, taxes and insurance can rise too, so compare the full picture rather than rent growth alone.

Is there a simple rule I can use? Some people compare the annual unrecoverable cost of owning, roughly a percentage of the home's value, with a year's rent. It's a useful starting point, but your timeline and local conditions should drive the decision.

Running the numbers with a framework

Spreadsheets are enough for the math above. If you want a fuller framework for housing costs, opportunity cost and emergency reserves, a clear personal finance book for beginners is a useful companion.

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Practical takeaways

• Compare unrecoverable costs (rent vs. interest, taxes, insurance, maintenance and opportunity cost), not full payments.
• Transaction costs make short ownership periods expensive; time in the home matters most.
• Local price-to-rent conditions vary widely, so run the numbers for your area.
• Weigh non-financial factors like stability and flexibility alongside the math.
• If renting wins for now, keep building your fund in the tracker so you're ready when buying makes sense.

Sources

• CFPB: Buying a house
• Freddie Mac Primary Mortgage Market Survey
• Median sales price of houses sold, via FRED
• U.S. Census Bureau, American Community Survey

Rates and prices are as of the dates noted and will change; other assumptions are illustrative. This article is for education only and is not financial advice.