Price-to-Rent Ratio Calculator (Buy or Rent?)
Calculate the price-to-rent ratio for a home or a city from the purchase price and the rent of a comparable property, read it against the 15 / 20 buy-versus-rent thresholds, see the implied gross yield and break-even horizon, and compare with typical ratios in major markets.
How it works
price-to-rent = price ÷ (monthly rent × 12) · gross yield = 1 ÷ ratio · annual cost of owning ≈ price × (owner costs % + mortgage rate % − appreciation %) · rule of thumb: < 15 buy, 15–20 neutral, > 20 rent
Dividing a home's price by a year's rent for the same kind of home gives a single number that captures how expensive ownership is relative to the alternative, and it is the inverse of the gross yield a landlord would earn. Low ratios mean rent is high relative to prices, so buying pays for itself quickly; high ratios mean prices have run ahead of rents and an owner is effectively paying for expected appreciation. The 15 and 20 thresholds come from comparing the unrecoverable costs of owning — property tax, insurance, maintenance and the interest or opportunity cost of the capital, offset by appreciation — with rent; at typical costs those cross near a ratio of 20, which is why the ratio doubles as a quick buy-or-rent screen, though the horizon you plan to stay matters as much.
Worked example
A $450,000 home that would rent for $2,000 a month has a price-to-rent ratio of 450,000 ÷ 24,000 = 18.75 — in the neutral 15–20 band, with an implied gross yield of 5.3%. With 2.5% owner costs, a 6% mortgage rate and 3% appreciation, owning costs about $24,750 a year against $24,000 of rent — a near tie that renting edges, so with 5% transaction costs owning never overtakes on these assumptions; at 4% appreciation it would break even after about 6 years.
Frequently asked questions
Which rent do I use?
The rent of a genuinely comparable home — same size, area and condition — not the rent you pay now. Listing sites and local agents give the going rate; be conservative.
Why do expensive cities have high ratios if people keep buying?
Because buyers expect appreciation, tax systems favour ownership (mortgage-interest relief, capital-gains exemptions) and rents are regulated or lag. High ratios are a warning about cash flow, not a prediction of prices.
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General rules and common conventions; employment contracts, immigration law and tax residency tests vary by country and change over time. Check the current official rules (or a professional) before relying on a date or a number.