🏘️Rent vs Buy Calculator

Our rent vs buy calculator gives you a complete, year-by-year financial comparison of renting versus buying a home — including every cost on both sides, a break-even year, and a 30-year average monthly cost chart. The question of whether to rent or buy a house depends on far more than comparing a monthly mortgage payment to current rent. This calculator accounts for property appreciation, home equity accumulation, selling costs, property tax growth, maintenance, opportunity cost of the down payment, renter investment portfolio growth, and tax benefits from mortgage interest deduction.

How the Rent vs Buy Calculation Works

Every dollar you commit to buying a home comes with costs that extend well beyond the mortgage payment. Every dollar you spend renting comes with an opportunity to invest the money you didn't put into a down payment. A fair comparison must capture both sides completely.

True Cost of Buying

The full cost of homeownership includes: the down payment (tied-up capital), buying closing costs (typically 2–5%), monthly principal and interest, property taxes (which typically grow 2–4% per year as assessments rise), homeowner's insurance (which grows with replacement costs), HOA fees, and ongoing maintenance (conventionally estimated at 1–2% of home value per year). When you sell, real estate commissions and transaction costs consume approximately 5–6% of the sale price. All of these costs are offset by the equity you've built through mortgage paydown and home appreciation.

True Cost of Renting

The cost of renting includes monthly rent (which typically rises 3–4% per year), renter's insurance, and upfront costs like the security deposit. Critically, renters who invest their would-be down payment and closing costs — plus any monthly savings when rent is lower than the equivalent buy payment — build a growing investment portfolio that offsets their rental expenditures. The net rent cost subtracts this portfolio value from total rent paid.

The Break-Even Year: The Most Important Number

The break-even year is the point at which the total net cost of buying falls below the total net cost of renting. Before this year, renting is more financially efficient; after it, owning increasingly outperforms. Most financial decisions about homeownership should be anchored to this figure relative to your expected time in the home.

In most U.S. markets under typical assumptions, the break-even falls between 4 and 8 years. In high-cost coastal markets with price-to-rent ratios above 25, it can extend to 10–15 years or more. In affordable Sunbelt markets with strong appreciation and modest rents, it can be as short as 3–4 years.

The three factors that most strongly influence break-even timing are: (1) the mortgage interest rate — higher rates push break-even later; (2) the price-to-rent ratio in your market — higher ratios push break-even later; and (3) the alternative investment return for the renter — higher returns push break-even later by making renting more competitive.

The Price-to-Rent Ratio

The price-to-rent ratio divides the home purchase price by the annual rent for a comparable property. It is the single most useful quick indicator of whether a local market favors buying or renting on a cost basis:

• Below 15: Buying is generally more economical on a monthly cash-flow basis — relatively affordable home prices mean mortgage costs are competitive with rent.
• 15 to 20: Neutral zone — buying can make sense with a long enough time horizon, but renting remains competitive.
• Above 20: Renting tends to be cheaper on a monthly cash-flow basis. Buying can still be advantageous long-term through appreciation and equity, but the break-even takes longer to reach.

Many major coastal cities — San Francisco, New York, Los Angeles, Seattle — carry price-to-rent ratios of 25 to 40+. Midwest and Sunbelt markets frequently fall in the 10 to 18 range.

Opportunity Cost: The Factor Most Buyers Overlook

Every dollar in a down payment is a dollar not invested elsewhere. A $80,000 down payment placed in a diversified stock portfolio returning 7% annually grows to approximately $157,000 in 10 years and $314,000 in 20 years. This opportunity cost is real and substantial. This calculator models it explicitly: the renter's portfolio starts at the full down payment plus closing costs the buyer paid, then grows at the investment return rate, with the monthly difference between buy and rent costs added or subtracted each month. The final portfolio value is subtracted from total rent paid to produce the net rent cost.

Property Tax and Insurance Growth

Property taxes and insurance costs are not fixed. Many states reassess properties annually or upon sale, and property tax bills can rise significantly over time — especially in states without assessment caps. This calculator applies a separate annual growth rate to property taxes, reflecting the reality that a $6,000 annual tax bill growing at 3% per year reaches nearly $8,000 in 10 years and nearly $10,800 in 20 years. Similarly, homeowner's insurance premiums have risen sharply in many markets due to climate-related claims, and this calculator applies an inflation rate to insurance and other ownership costs.

Tax Benefits of Homeownership

Mortgage interest and property taxes can be deducted if you itemize federal income taxes. However, the benefit only applies to the extent your itemized deductions exceed the standard deduction ($29,200 for married filing jointly in 2024, $14,600 for single filers). Property tax deductions are capped at $10,000 under the SALT limit. This calculator applies your marginal tax rates and filing status to estimate the incremental tax benefit from itemizing — the true financial value of these deductions, not their face amount.