Rent vs Buy in 2026: The Math Has Changed

How did rent vs buy math change since 2021?

The rent-vs-buy comparison is mostly a function of one input: the mortgage rate. To isolate its effect, we model the exact same home — $400,000 purchase price, 20% down ($80,000), 30-year fixed loan on the remaining $320,000 — at two different rates: the roughly 3% available to well-qualified buyers in 2021, and the roughly 6.5% available in 2026.

Loan: $320,000 (80% of a $400,000 home). Property tax modeled at the 1.1% national average effective rate (Tax Foundation), insurance at $1,800/year — both held constant for comparison purposes. Figures verified against our Mortgage Calculator.

The swing is stark: at 3%, owning this home was $334 a month cheaper than renting the day you moved in. At 6.5%, owning costs $339 more per month than renting. Nothing about the home or the rental market changed in this comparison — only the interest rate did, and that alone is a $673 monthly difference.

Is it cheaper to rent or buy in 2026?

On pure month-to-month cash flow, renting is cheaper in most markets at today's rates. But monthly cost is only half the comparison — homeownership also builds equity through principal paydown and price appreciation, while a renter who invests the difference builds equity in a portfolio instead. The right comparison has to run both paths forward over time, not just compare the first month's bill.

What happens over 10 years: owning vs. renting and investing?

To compare wealth outcomes, not just monthly cash flow, we ran a 10-year simulation at 2026's 6.5% rate. The buyer puts $80,000 down and pays down the $320,000 loan on schedule. The renter starts with the same $400,000 home unbought, rents the equivalent unit at $2,200/month (rent rising 5.2% per year, matching the BLS shelter CPI's annualized rate from 2020-2025), and invests the $80,000 down payment plus any monthly savings versus the owner's cost — assumed to earn a 10% nominal annual return, the long-run historical average for a diversified U.S. stock portfolio.

Home appreciation modeled at 4.5%/year, the FHFA House Price Index's long-run national average. Stock returns modeled at 10% nominal, the long-run historical S&P 500 average. Rent growth uses the BLS shelter CPI sub-index, annualized 2020-2025. Property tax and insurance held constant in nominal dollars for simplicity — in practice they typically rise with reassessments, which would narrow the owning advantage shown here.

In this model, the homeowner ends up ahead at both checkpoints — by roughly $59,000 at year 5 and $124,500 at year 10. The driver is leverage: a 20% down payment controls 100% of the home's appreciation, so a 4.5% annual gain in home value compounds against the full $400,000 price, not just the $80,000 invested. That leveraged growth, combined with forced equity paydown from each mortgage payment, outpaces the renter's unleveraged 10% return on a smaller, slower-growing pool of capital — even though renting wins the monthly cash-flow comparison every single month in this scenario.

Why is the gap closer than it used to be?

At 2021-era 3% rates, the same exercise would show buying ahead from month one on cash flow alone, then pulling further ahead through equity — a much more lopsided result in favor of buying. At 6.5%, the renter starts with a meaningful monthly cash advantage and a full decade to compound it, closing much of the gap that leverage and appreciation create. The conclusion — buy wins this particular model — is sensitive to its assumptions. A lower appreciation rate, a higher rent, or a stronger stock market would tip the balance toward renting and investing.

What is the 5% rule for rent vs buy?

A widely used shortcut, popularized by economist Ben Felix and others, estimates that owning a home costs roughly 5% of its value per year once you account for property taxes (~1%), maintenance (~1%), and the opportunity cost of the capital tied up in the home and transaction costs (~3%). On our $400,000 home, that is $20,000 a year, or $1,667 a month — below our modeled $2,539 PITI because the 5% rule nets out principal paydown (which builds equity, not a true cost) and uses a lower assumed cost of capital. It is a fast sanity check, not a substitute for a full model.

How much does mortgage rate affect the rent vs buy decision?

Rate is the dominant variable. Holding the home price, down payment, rent, and every other input identical, moving from 3% to 6.5% increased the monthly principal-and-interest payment on our $320,000 loan from $1,349.13 to $2,022.62 — a $673.49 increase. That single change flipped this scenario from “buying is $334 cheaper monthly” to “renting is $339 cheaper monthly,” without home prices or rents moving at all.

Use our Mortgage Calculator to run your own home price, down payment, and rate, and our ROI Calculator to compare the investment return side of the equation.

Frequently asked questions about rent vs buy in 2026

Is it cheaper to rent or buy in 2026?

On monthly cash flow, renting is cheaper in most markets at 2026 rates — about $339/month cheaper in our $400,000 home example. Over a 10-year horizon, owning can still build more net worth through leveraged appreciation and forced equity paydown, but the margin is far narrower than it was at 2021-era rates.

How did rent vs buy math change since 2021?

At 2021's ~3% rates, the same home cost about $334/month less to own than to rent. At 2026's ~6.5% rates, it costs about $339/month more — a roughly $673 monthly swing caused almost entirely by the rate change, not home prices or rents.

What is the 5% rule for rent vs buy?

The 5% rule estimates annual home ownership costs (taxes, maintenance, opportunity cost of capital) at roughly 5% of the home's value. If comparable rent is below that monthly figure, renting is likely favorable on a pure cost basis before counting equity buildup.

Does buying still build more wealth than renting and investing?

In our 10-year, 6.5%-rate model, the homeowner's equity (~$349,900) outpaces the renter's invested portfolio (~$225,300), mainly due to leveraged appreciation on the full home value. The result is highly sensitive to the appreciation and investment return assumptions used, and can flip with different inputs.

Should I wait for rates to drop before buying a home?

Waiting has its own cost — rent paid while waiting builds no equity, and home prices can outrun rate declines. Many buyers purchase what fits their budget at today's rate with a plan to refinance later, rather than trying to time the rate market precisely.

Data sources: U.S. Bureau of Labor Statistics (shelter CPI sub-index, rent growth rate); Federal Housing Finance Agency House Price Index (long-run home appreciation average); Tax Foundation (national average effective property tax rate). Mortgage and equity figures calculated independently and verified against accurate.software's Mortgage Calculator. Analysis by the staff at accurate.software.