“Rent is throwing money away” is one of the most repeated lines in personal finance, and it is also a bad way to compare renting and buying. The honest comparison is not rent versus a mortgage payment. A mortgage payment includes principal, which builds equity you keep; rent never gets that back, but neither does a chunk of what a homeowner pays either. The real comparison is between the money that disappears for good in each scenario, plus a very important cost that is easy to miss entirely: what else you could have done with your down payment.
I have rented while working full time, and the thing that struck me most was how predictable it was. One number left my account every month, and that was the end of it. Owning spreads the cost across far more categories, some of which do not show up until later. This guide walks through a more complete way to compare the two, using tools that go beyond “is rent more than the mortgage payment.”
Why Comparing Rent to the Mortgage Payment Is Misleading
A mortgage payment is not the full cost of owning, and a chunk of it, the principal, is not really a cost at all, since it builds equity you keep. What you actually lose for good as a homeowner includes property taxes, maintenance, insurance, and the interest portion of your mortgage. As a renter, what you lose for good is simply your rent. Comparing a mortgage payment to rent, without separating out principal, badly overstates how expensive owning looks, or understates it, depending on which number you focus on.
The Price-to-Rent Ratio: A Quick First Filter
One widely used shortcut is the price-to-rent ratio: divide a home’s purchase price by what it would rent for annually.
Price-to-rent ratio = Home price ÷ Annual rent
As a rough guide:
- Below 15: buying usually makes more financial sense
- 15 to 20: a gray area that depends on how long you plan to stay and other local factors
- Above 20: renting is usually the better financial move
For example, a $300,000 home that would rent for $1,500 a month, or $18,000 a year, has a ratio of about 16.7, landing in that gray zone. This ratio is a useful starting filter, not a final answer, since it ignores interest rates, your own tax situation, and how long you intend to stay.
A More Complete Tool: The 5% Rule
A more thorough way to compare the two was popularized by portfolio manager Ben Felix, and it is built around a simple idea: compare the unrecoverable costs of each option, the money that is gone for good either way.
For a renter, the unrecoverable cost is simple: it is the rent. For an owner, there are three main unrecoverable costs:
- Property taxes, roughly 1% of the home’s value per year, on average, though this varies significantly by location
- Maintenance, also roughly 1% of the home’s value per year, as a common planning figure
- The cost of capital, meaning mortgage interest plus, importantly, the opportunity cost of the money tied up in your down payment and home equity, which could otherwise have been invested elsewhere
Added together, these three commonly land around 5% of the home’s value per year, which is where the rule gets its name.
Annual unrecoverable cost of owning ≈ Home value × 5%
Divide by 12 to get a monthly figure, and compare it directly to rent for a similar property. If rent is lower than that monthly number, renting is likely the better financial choice; if rent is higher, owning likely wins.
A Worked Example
Take a $400,000 home.
$400,000 × 0.05 = $20,000 a year ÷ 12 ≈ $1,667 a month
If a comparable rental in the same area runs $1,900 a month, owning comes out ahead by this measure, since the unrecoverable cost of owning is lower than what you would lose to rent. If that same home could be rented for $1,400 a month, renting would be the cheaper choice, by this calculation, even though the mortgage payment itself might look similar to or lower than the rent.
The part people most often overlook is the opportunity cost piece. A down payment of $80,000 (20% on that $400,000 home) is money that is no longer available to invest elsewhere. If stocks have historically returned more than real estate on average, that forgone return is a genuine cost of ownership, even though no one sends you a bill for it.
Don’t Forget the Cost of Buying and Selling
There is a second reason short stays favor renting: transaction costs. Buying typically costs about 2% to 5% of the purchase price in closing costs. Selling is more expensive still, commonly 10% to 15% of the sale price once you add agent commissions (typically 5% to 6%), seller closing costs, repairs, staging and moving expenses.
On a $400,000 home, that could mean roughly $12,000 to buy and another $40,000 or more to sell, a total transaction cost that can run $50,000 or beyond. That money has to be recovered through appreciation and principal paydown before you come out ahead, which is why real estate agents commonly suggest staying at least five years, and many analyses put the real break-even point for a typical market closer to five to seven years. Sell sooner than that, and transaction costs alone can wipe out whatever you gained.
Putting It Together: A Simple Process
- Calculate the price-to-rent ratio for a home you are considering, against a comparable rental, as a quick first filter
- Run the 5% rule: multiply the home’s price by 5%, divide by 12, and compare that monthly figure to actual rent for a similar property
- Be honest about how long you plan to stay; if it is under five years, transaction costs alone are a real headwind
- Remember that the 5% figure is a rule of thumb, not your exact numbers; your actual property tax rate, maintenance costs, and mortgage rate will move the real figure up or down
- Weigh the non-financial side too, stability, the ability to renovate, and not being subject to a landlord’s decisions, against the flexibility that renting offers
What This Does Not Capture
No formula settles this decision entirely. Renting means not having to find tens of thousands of dollars for a down payment and closing costs, money that can instead go into savings, investments, or simply a more comfortable cash cushion. Owning means stability, control over your space, and the ability to build equity over time, which matters to people for reasons that go beyond a spreadsheet. If a market is in your favor financially but you need to move for work every two years, renting is probably still the right call. If the math leans toward renting but you deeply value putting down roots, that is a legitimate reason to buy anyway. The math should inform the decision, not make it for you.
Common Mistakes
The most common mistake is comparing rent only to the mortgage payment, ignoring property taxes, maintenance and insurance entirely. A second is ignoring the opportunity cost of the down payment, as if that money would otherwise have sat in a drawer. A third is underestimating how long it takes to recover the cost of buying and selling, especially for anyone who might need to move within a few years.
Final Thoughts
The real comparison between renting and buying is not rent versus a mortgage payment, it is the full unrecoverable cost of each option, including the one that rarely gets mentioned: what your money could have earned elsewhere. The price-to-rent ratio is a fast first check; the 5% rule gets you closer to a real apples-to-apples comparison. Neither replaces your own judgment about how long you plan to stay and what matters to you beyond the numbers, but both beat comparing two payments that were never really comparable in the first place.
This article is for educational purposes only and is not financial, legal, tax or investment advice. The percentages used here (property tax, maintenance, transaction costs, opportunity cost assumptions) are common planning figures, not guarantees, and vary by location and market. Confirm current numbers for your area with a qualified professional before making a decision.
