Rent vs. Buy: How to Decide With Real Numbers

Rosa pays $2,300 a month for a three-bedroom rental. The house down the street, almost the same layout, is listed at $400,000. She ran the numbers on a napkin: with 20% down at 6.75%, owning would cost her about $2,926 a month once you count taxes, insurance and upkeep. Renting is $626 a month cheaper. So why does every older relative keep telling her she’s throwing money away?

Because they’re both partly right. The monthly number is a snapshot. Rent vs buy is a decision about the next 10, 20, 30 years, and the answer changes depending on how long you stay, what your rent does, and one thing nobody likes to admit: what you actually do with the money you save by renting.

Why the monthly comparison fools people

Comparing rent to a mortgage payment is the most common way to decide, and it’s the wrong way. Not because the numbers are fake, but because they leave out half the movie.

When you rent, almost everything you pay is gone. That’s not a moral failing; you’re buying a place to live and flexibility, and that has value. But nothing builds up.

When you own, your payment splits into two very different kinds of money:

• Money that’s gone: mortgage interest, property tax, insurance, maintenance, and the closing costs to buy and sell.
• Money that’s moved, not spent: the principal part of each payment. It leaves your checking account and becomes equity in a house you own.

So the fair comparison isn’t rent vs mortgage. It’s rent vs the unrecoverable costs of owning, plus what happens to the cash you’d tie up in a down payment. That’s exactly what the rent vs buy math below does.

The honest case for buying

Owning has three advantages that never show up in a one-month comparison.

1. A fixed-rate payment freezes your biggest cost

Rent tends to rise every year. A 30-year fixed mortgage payment does not. Taxes and insurance still creep up, but the principal-and-interest part, usually the biggest piece, is locked for the life of the loan.

Here’s Rosa’s situation using the same assumptions as the calculator: rent rising 3% a year, the home’s value growing 3% a year, property tax at 1.1% and maintenance at 1% of the home’s value.

Around year 13, rent passes the full cost of owning. And after year 30 the $2,076 mortgage payment disappears completely. The owner is left with taxes, insurance and upkeep. The renter is still writing a bigger check every year.

One more number to sit with: $2,000 a month in rent, rising 3% a year, adds up to about $1.14 million over 30 years. That’s not an argument that renting is stupid. It’s a reminder that “cheaper this month” and “cheaper over your life” are different questions.

2. A mortgage is a savings plan you can’t skip

Every month, part of the payment pays down the loan. You don’t have to remember, feel motivated or resist a sale. It just happens. For a lot of middle-class families, home equity ends up being the biggest asset they own, not because a house is a magical investment but because it’s the one savings plan they never stopped funding.

In the Federal Reserve’s Survey of Consumer Finances, the typical homeowner’s net worth is roughly 40 times the typical renter’s. Be careful with that number. Owning doesn’t cause all of it; people with higher incomes and more savings are more likely to buy in the first place. But forced savings is a real part of the story.

3. Leverage works on the whole house

Put $80,000 down on a $400,000 home and you get the appreciation on all $400,000. If the home rises 3% in a year, that’s $12,000 of value on $80,000 of your cash. Leverage cuts both ways, of course. If prices fall 10%, you lose $40,000 of equity. That’s why the time you stay matters so much.

The honest case for renting

Renting isn’t throwing money away. It buys you things owning can’t.

• Flexibility. A new job, a breakup, a move closer to family: a renter gives notice. An owner sells, and selling a home commonly costs 6% or more of the price in agent fees and closing costs.
• No surprise repair bills. When the roof or the HVAC goes, a renter calls the landlord. An owner writes a check that can easily run five figures.
• Your down payment stays liquid. Money you don’t put into a house can sit in an emergency fund or get invested.
• Rent and invest the difference. If owning costs $626 a month more than renting, a renter who invests that $626 every month, plus the down payment they didn’t spend, can come out ahead. This strategy works. The catch is the word “invests.”

Worked example: Rosa’s rent vs buy numbers

Here’s Rosa’s full picture, run through the rent vs buy calculator on this site with its default assumptions:

• Rent: $2,300 a month, rising 3% a year
• Home price: $400,000, 20% down, 30-year fixed at 6.75%
• Principal and interest: $2,076 a month
• Property tax 1.1%, insurance $1,800 a year, maintenance 1% a year
• Closing costs to buy: 3%. Costs to sell: 6%
• Home value grows 3% a year. Investments return 6% a year
• Cash needed to buy: $92,000 (the $80,000 down payment plus $12,000 closing)

The calculator gives both versions of Rosa the same $92,000. If she rents, that cash gets invested, plus the monthly difference whenever owning costs more. If she buys, her wealth is the home’s value minus selling costs minus the loan balance, plus anything she invests in the years when owning becomes cheaper than rent.

The break-even point is about 11 years. Before that, the costs of buying and selling plus the higher monthly cost mean the disciplined renter is ahead. After that, the frozen payment and the growing equity take over, and the gap gets big.

Small changes move the answer a lot

Keep everything else the same and change one input at a time, looking at a 7-year stay:

Nobody knows future home prices or market returns. That’s why it’s worth running a cautious case and an optimistic case, not just the one that tells you what you want to hear.

The question the spreadsheet can’t answer

Every “renting wins” row above assumes the renter invests the down payment and every dollar of the monthly difference, automatically, for years, through market crashes. Be honest about whether that’s you.

We ran Rosa’s exact numbers again with one change: the renter still invests the $92,000 but spends the monthly difference instead of investing it. That version of renting is behind by only $7,748 after 3 years, but buying wins by $33,579 after 7 years and by $609,727 after 30.

Rosa is a quiet, automatic saver, so rent-and-invest is a real option for her. For a lot of people, it’s a plan they mean to follow and don’t. The mortgage works partly because it takes the choice away. The real question isn’t which plan wins on paper. It’s which plan you’ll actually follow.

Run your own numbers:

When buying makes sense: three conditions

Buying tends to leave you wealthier when all three of these are true. Not one, not two. All three.

1. You’ll stay at least 5 to 7 years, ideally longer. Buying and selling costs eat the early gains. In Rosa’s example the break-even is about 11 years. Under about 3 years, renting usually wins.
2. You can truly afford it. The full monthly cost, not just the loan, plus an emergency fund that survives the closing table, plus room for repairs. If buying means draining your savings to zero, rent longer and build cash first. Our guide to how much house you can afford walks through the full method.
3. You treat it as a home and a forced savings plan, not a bet. Buy the boring house you can comfortably carry, on a fixed rate so the payment can’t surprise you. Don’t stretch for a bigger house because you expect prices to jump.

If rates feel high, remember the old line: marry the house, date the rate. You can’t change the price later, but you may be able to change the rate. See when refinancing actually makes sense before you count on it, though. Rates may not fall on your schedule.

And if the down payment is what’s stopping you, check before assuming you can’t. FHA loans allow as little as 3.5% down for borrowers who meet the credit requirements, and many states and cities run first-time buyer programs. Less down means a higher payment and mortgage insurance, so run those numbers too.

When renting is the smarter move

• You might move within a few years for work, family or anything else.
• Rent in your area is low compared to prices. At $2,000 rent, Rosa’s numbers never break even within 30 years.
• Buying would wipe out your emergency fund.
• You have high-interest debt to clear first.
• You’re a genuinely automatic investor who will put the difference to work every single month.

If you rent, make it a strategy, not a default. Set up an automatic transfer on payday for the amount owning would have cost you above rent, and invest it. Then renting isn’t standing still.

Common rent vs buy mistakes

• Comparing rent to principal and interest only. Taxes, insurance, maintenance and HOA dues are real. In Rosa’s case they add about $850 a month.
• Forgetting the cost to sell. At 6%, selling a $400,000 home costs about $24,000.
• Assuming prices only go up. Run a 1% or 2% growth case too.
• Assuming the renter invests the difference when they never have before.
• Buying the maximum the bank approves. The approval is a ceiling, not a target. More on that in pre-approved vs affordable.

What to do this week

1. Write down your real rent and what it went up by at your last renewal.
2. Pick a realistic home price in the neighborhood you’d actually buy in, and look up its property tax rate.
3. Run the calculator three ways: your expected stay, 3 years shorter, and with 2% home price growth.
4. Check your last 6 months: did the money you “saved” by renting actually get invested? Be honest.
5. If you’re leaning toward buying, compare loan terms with our 15-year vs 30-year mortgage breakdown.
6. If you’re staying a renter, set up an automatic investment for the monthly difference today.

Frequently asked questions

Is renting throwing money away?

No. Rent buys housing and flexibility. But owning also has costs that are gone for good: interest, taxes, insurance, maintenance and transaction fees. The fair comparison is rent against those costs, not against the whole mortgage payment.

How long do I need to stay for buying to beat renting?

It depends on your numbers, but a common rule of thumb is at least 5 years. With the calculator’s default assumptions the break-even is about 11 years; with higher rent or faster price growth it drops to around 6.

What is the 5% rule for rent vs buy?

It’s a rule of thumb: the yearly unrecoverable cost of owning is roughly 5% of the home’s value (about 1% property tax, 1% maintenance and 3% cost of capital). Multiply the price by 5% and divide by 12. If you can rent a similar home for less than that, renting is likely the better deal. On a $400,000 home that’s about $1,667 a month.

Does the rent vs buy math include the mortgage interest tax deduction?

Our calculator leaves it out. Most households take the standard deduction, so many owners get little or no extra benefit from deducting mortgage interest. If you itemize, buying looks slightly better than shown.

Should I wait for mortgage rates to drop before buying?

Nobody can time rates reliably. Buy when the three conditions above are true and the payment works at today’s rate. If rates fall later, you can look at refinancing.

Keep reading

• How Much House Can You Really Afford? The Complete Guide
• 15-Year vs. 30-Year Mortgage: Which Saves You More?
• Should I Refinance My Mortgage? When It Makes Sense
• How Much Should Be in Your Emergency Fund?

Education, not financial advice. The numbers here are examples; talk to a licensed professional about your own situation. Some links may be sponsored or affiliate links; see our disclosure.