The rent-to-price ratio is the single most useful back-of-the-napkin number for rent-vs-buy. You take the annual rent for a specific home and divide it by that home's purchase price. If the ratio is high, renting is expensive relative to buying — the market is priced for buyers. If the ratio is low, renting is cheap relative to buying — the market is priced for owners.
Everyone repeats one version of "the rule": if the ratio is above 5%, buy; below 4%, rent. That's a rule that made sense in 2015 and made almost no sense in 2022. The right threshold depends entirely on the mortgage rate you can get. Here's how to read the number, honestly.
The definition, exactly
Rent-to-price ratio (also called the "gross rental yield") is:
rent-to-price ratio = (annual rent) / (purchase price)
Some people flip it and use the inverse — price-to-rent ratio — which is just the number of years of rent to equal the purchase price. Both mean the same thing. We'll stick with the ratio because it's a single-digit percent that's easier to compare against a mortgage rate.
A worked baseline. A $500,000 house that rents for $2,500/month has annual rent of $30,000. Rent-to-price ratio = 30,000 / 500,000 = 6.0%. Price-to-rent = 500,000 / 30,000 = 16.7 years.
The number to build intuition around: the US metro average rent-to-price ratio was 4.9% in 2015, 4.1% in 2020, 3.8% in 2022, and 4.7% in 2026 according to Zillow's Observed Rent Index and Home Value Index. It moves. It moves with mortgage rates and it moves with local supply.
Why the ratio depends on the mortgage rate
At any given rent-to-price ratio, whether buying or renting wins depends on what you'd otherwise do with the down payment and how much your monthly mortgage payment is. Both of those move with the mortgage rate.
The threshold ratio — the number where renting and buying tie on 10-year present value — falls somewhere between the mortgage rate and the risk-free bond rate. That's the honest range. Here's why:
- Below the mortgage rate, the rent is less than the interest cost of borrowing to buy the house. On a fully-mortgaged basis, buying is bleeding cash to service the loan. You'd need appreciation to make up the gap, and appreciation is not a guarantee.
- Above the risk-free rate + the actual costs of ownership (maintenance, tax, insurance drift, PMI while it applies), the rent is more than what it costs to own outright. Buying starts winning quickly.
- The threshold in between depends on your down payment size, your expected length of stay, your marginal tax situation, and your expected inflation on rent.
The clean way to summarize the whole thing: the break-even rent-to-price ratio moves with the mortgage rate. When mortgage rates go up, ratios have to go up (or prices have to come down) for buying to be attractive at the same expected return.
Threshold table by rate environment
Here's a defensible threshold set — the rent-to-price ratio below which renting is more likely to win at three common mortgage-rate environments. These assume a US-median setup: 20% down, US-average state property tax (1.0%), US-average insurance drift (5%/year), 1% maintenance, S&P 500 real return as the opportunity cost of the down payment, 10-year expected length of stay.
| 30-yr mortgage rate | Renting typically wins below | Coin-flip zone | Buying typically wins above |
|---|---|---|---|
| 3.0% (2020–early 2022) | 3.5% | 3.5% – 5.0% | 5.0% |
| 5.0% | 4.5% | 4.5% – 6.0% | 6.0% |
| 6.0% | 5.0% | 5.0% – 6.5% | 6.5% |
| 6.75% (2026 avg to date) | 5.3% | 5.3% – 7.0% | 7.0% |
| 8.0% | 6.0% | 6.0% – 7.5% | 7.5% |
Two big caveats. First, these are 10-year-stay thresholds. If you plan to stay 4 years, the coin-flip zone slides right by 100 bps (closing costs have less time to amortize). If you plan to stay 20 years, the zone slides left by 100 bps (compounding works in favor of ownership). Second, these thresholds assume flat real rent growth. In San Francisco, where real rent growth has averaged +1.5%/year for two decades, thresholds slide toward renting. In Detroit, where real rent growth has been slightly negative, thresholds slide toward buying.
Worked example: high-price metro
Two-bedroom apartment in Austin. Comparable buy: 1,800 sq ft house in the same neighborhood for $625,000. Comparable rent: $2,800/month, or $33,600/year.
Rent-to-price ratio = 33,600 / 625,000 = 5.4%.
At today's ~6.75% mortgage rate, our threshold table says the coin-flip zone is 5.3% – 7.0%. 5.4% is at the very bottom of that zone — barely above the "renting typically wins" line. Which is exactly what you'd expect for a high-cost-of-ownership metro: property taxes in Texas are 1.7% (well above the 1.0% US average), insurance is elevated for wind exposure, and appreciation has cooled from the 2021 spike.
The takeaway for that specific house: buying and renting are close to equal on 10-year present value. A calculator would give you a break-even year in the 8–11 year range, meaning the decision comes down to how confident you are you'll stay past that. If you're 60% confident you'll stay 7 years, rent. If you're 60% confident you'll stay 12 years, buy.
Worked example: low-price metro
Three-bedroom in a Midwest small city. Comparable buy: 2,200 sq ft house for $220,000. Comparable rent: $1,750/month, or $21,000/year.
Rent-to-price ratio = 21,000 / 220,000 = 9.5%.
At today's ~6.75% rate, 9.5% is way above the "buying typically wins" line of 7.0%. This is the classic "renting is a bad deal" situation. Roughly speaking, at 9.5% rent-to-price, monthly rent alone is more than principal + interest + tax + insurance for the same house — buying is cheaper on a first-month basis, and every year past year 3 or 4 the gap widens.
A calculator here would give you a break-even year of 3–5 years — buying wins if you can stay half a decade. In practice, low-price metros almost always look like this at any mortgage rate above 4%, which is why you rarely see anyone renting long-term in Cleveland or Kansas City by choice.
Worked example: coastal metro at prior rates
Rewind to March 2021. Two-bedroom apartment in Denver rents for $2,300/month ($27,600/year). Same neighborhood, comparable buy is $580,000. Mortgage rate: 3.0%.
Rent-to-price ratio = 27,600 / 580,000 = 4.8%.
At a 3% mortgage rate, our threshold table says the coin-flip zone is 3.5% – 5.0%. 4.8% is at the upper edge of that zone — buying was probably the marginal win. And in fact, a calculator run at 2021 numbers would show buying winning by year 5 or 6 for that scenario.
Now fast-forward to the same house in 2026. The house is now $675,000 (up ~16%), the rent is $2,700/month ($32,400/year), and the mortgage rate is 6.75%.
Rent-to-price ratio in 2026 = 32,400 / 675,000 = 4.8% — essentially unchanged.
But at a 6.75% mortgage rate, our threshold table says buying only starts winning above 7.0%. Same 4.8% ratio, entirely different verdict. The rent-to-price ratio was near-optimal for buying in 2021 and near-optimal for renting in 2026, without the ratio itself moving at all. The mortgage rate was doing the work.
Where to get the numbers
You can compute rent-to-price for any specific address if you know two things: what it would list for and what a directly comparable unit rents for.
- Purchase price: Zillow, Redfin, or Realtor.com Zestimate/Redfin Estimate on the specific address. Cross-check with active listings in the same neighborhood on the same tier.
- Rent: Zillow Rent Zestimate on the same address, plus a look at active rental listings within a 0.5-mile radius. Sanity check by asking a leasing office.
If you can only find one and not the other — you're looking at a rental and want to know the buy equivalent, or vice versa — use the metro median from Zillow's Housing Market Reports and adjust for bedrooms.
Metro-level snapshots for calibration. Rough 2026 numbers from Zillow ZORI and ZHVI:
| Metro | Rent-to-price ratio (approx) | Verdict at 6.75% |
|---|---|---|
| San Francisco Bay Area | 3.0% – 3.6% | Renting wins by a mile |
| Los Angeles | 3.4% – 4.0% | Renting wins |
| New York City metro | 3.8% – 4.8% | Renting to coin-flip |
| Boston | 4.0% – 4.8% | Renting to coin-flip |
| Seattle | 4.2% – 5.0% | Renting to coin-flip |
| Austin | 4.8% – 5.6% | Coin-flip |
| Denver | 4.5% – 5.4% | Renting to coin-flip |
| Miami | 5.2% – 6.5% | Coin-flip to buying |
| Chicago | 5.5% – 7.0% | Buying wins |
| Atlanta | 5.5% – 6.8% | Coin-flip to buying |
| Houston / Dallas | 6.0% – 7.5% | Buying wins |
| Cleveland / Detroit / Pittsburgh | 8.0% – 12%+ | Buying wins easily |
These are metro medians. Individual neighborhoods diverge dramatically — a $2M house in a top-tier ZIP in a Midwest city can easily have the rent-to-price ratio of a coastal metro. Do the ratio on the specific house, not the metro average.
Three things the ratio doesn't tell you
The ratio is a fast one-glance test. It is not a substitute for a full break-even analysis. Three things it deliberately ignores:
- How long you'll stay. Below the threshold with 3-year plans is different from below the threshold with 20-year plans. The break-even year piece handles this properly.
- Non-financial factors. Landlord-lottery risk, painting-the-walls value, kids-in-the-same-school-district value. The ratio doesn't price these. You have to.
- Actual local appreciation drift. A metro where real rents have been climbing 1% a year is a different rent-to-price fundamental than a metro where real rents have been flat. The threshold table above assumes flat real rent growth; adjust for your metro.
For a first cut, though, the rent-to-price ratio does 80% of the intellectual work in 30 seconds. Compute it on the specific house you're considering. Compare it to the threshold at your mortgage rate. If you're outside the coin-flip zone in either direction, the answer is easy. If you're inside the coin-flip zone, run the full calculator.
The one-line takeaway
At a 6.75% mortgage rate, rent-to-price below ~5% probably favors renting; above ~7% probably favors buying; in between it's a fair fight and the length-of-stay decides. Recompute the thresholds when rates change materially. Recompute the ratio when you're looking at a specific house. Don't use the 2015 "5% is the magic number" rule at 2026 rates.
Ready to run the full break-even math on your specific rent-to-price situation? Try the rent-vs-buy calculator → — it takes rent, price, and rate as top-level inputs and gives you a defensible break-even year in under a minute.