Compare the monthly and long-term cost of renting vs buying a home from rent, price and mortgage rate, with typical defaults and price-to-rent ratio.
Rent vs Buy Formula
The monthly cost of owning a home is the mortgage payment plus the ongoing costs a renter does not pay directly:
Monthly Buy Cost = M + T + I + H + R
The mortgage principal and interest payment M comes from the standard amortization formula:
M = P * i / (1 - (1 + i)^-n)
Variables:
- P is the loan amount (home price minus down payment)
- i is the monthly interest rate (annual rate divided by 12)
- n is the number of monthly payments (loan term in years times 12)
- T, I, H, and R are the monthly property tax, home insurance, HOA dues, and maintenance
Comparing monthly costs is only half the picture, because part of every mortgage payment builds equity. To compare the included costs over a set number of years, the calculator totals what you spend either way and subtracts what you get back when you sell:
Net Buy Cost = Down + Closing + Payments - (Sale Value - Loan Balance - Selling Cost) Net Rent Cost = Total Rent Paid (grown by annual increases)
Whichever net cost is lower over your time horizon is the cheaper option for that period. Loan repayment and changes in home value can favor buying over time, but a break-even point is not guaranteed. The calculator checks the first year-end crossover within the selected period; it may reverse later.
Rent vs Buy Rules of Thumb
These rough rules of thumb are context-dependent screens, not reliable decision thresholds or inputs to this calculator. The price-to-rent ratio divides the home price by the annual rent for a similar place.
| Price-to-rent ratio | General signal |
|---|---|
| 1 to 15 | Buying is often the better value |
| 16 to 20 | Borderline; run the numbers carefully |
| 21 and up | Renting is often cheaper |
The other quick check is the 5% rule: multiply the home price by about 5% (roughly 1% maintenance, 1% property tax, and 3% cost of capital) and divide by 12. If the result is less than the monthly rent for a comparable home, buying tends to win; if it is more, renting does.
Example Problems
Example 1: Compare monthly costs.
Rent is $2,000. A comparable home costs $350,000 with 20% down at 6.5% over 30 years, plus 1.1% property tax, $1,500 insurance, no HOA, and 1% maintenance. The loan is $280,000, so the payment is about $1,770, and tax, insurance, and upkeep add roughly $737, for a monthly buy cost near $2,507. Renting is about $507 a month cheaper before counting equity.
Example 2: Compare over seven years.
Using the same figures with 3% annual rent increases, 3% appreciation, 3% closing costs, and 6% selling costs, total rent paid is about $184,000 while the net cost of buying is about $140,000 after equity and sale proceeds. Over seven years, buying comes out roughly $44,000 ahead even though its monthly cost is higher.
Frequently Asked Questions
Is it cheaper to rent or buy?
It depends on the entered costs, financing, time horizon and changes in rent and home value. Buying has upfront cash needs, but the down payment also contributes to equity recovered at sale. A crossover may occur or may never occur; appreciation is not guaranteed.
What costs do people forget when comparing renting and buying?
Buyers often overlook property tax, homeowners insurance, HOA dues, maintenance of around 1% of the home's value per year, and the closing and selling costs on each end. Renters sometimes forget that their rent rises over time and that the money not spent on a down payment could be invested. This calculator includes the main ownership costs and lets you add rent increases.
How many years until buying beats renting?
The calculator reports the first year-end when the modeled net buying cost is no greater than rent within your selected horizon. It holds property tax, insurance, maintenance and HOA costs constant, stops mortgage payments after payoff, and excludes mortgage insurance, utilities, income-tax effects and investment returns. A later reversal is possible.
