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How to Use This Rent vs Buy Calculator

Our rent vs buy calculator helps you compare the true long-term cost of renting a home against buying one, accounting for the many expenses that go beyond a monthly payment. Enter your rent, a comparable home price, and how long you plan to stay to see which option comes out ahead. Click Ask AI for a personalized analysis of which choice makes more financial sense for your situation.

The Hidden Costs of Homeownership

The biggest mistake in the rent versus buy decision is comparing rent directly to a mortgage payment, because owning carries many costs that renting does not. Beyond principal and interest, homeowners pay property taxes of roughly 1% to 2% of the home value each year, homeowners insurance of $1,500 to $2,500 annually, and ongoing maintenance often estimated at about 1% of the home value per year. Buying also involves substantial closing costs, typically 2% to 5% of the purchase price, paid upfront, and selling later costs another 6% or so in real estate agent commissions and fees. There is also the opportunity cost of your down payment, which is money that could otherwise be invested and earning returns. When all of these are added up, the total cost of owning is considerably higher than the mortgage payment alone, and factoring them in is essential to an honest comparison with renting.

The Opportunity Cost of a Down Payment

One of the most overlooked factors in the rent versus buy decision is what economists call opportunity cost, the return you give up on money tied up in a home. A 20% down payment on a $400,000 house is $80,000, a large sum that, if invested in a diversified index fund earning a historical average of around 7% annually, could grow to roughly $157,000 in ten years and about $305,000 in twenty. When you sink that money into a down payment, you forgo those potential investment gains, and home price appreciation does not always keep pace with the stock market. This does not mean buying is a mistake, since a home builds equity and provides stability and a hedge against rising rents, but it does mean the down payment is not free. A complete comparison must weigh the equity and appreciation you gain from owning against the investment growth you sacrifice, which is why renting and investing the difference is sometimes the wealthier long-term path.

The Price-to-Rent Ratio

The price-to-rent ratio is a quick and powerful tool for judging whether buying or renting is more favorable in a particular market. To calculate it, divide the price of a home by the annual cost of renting a comparable property. If a house costs $400,000 to buy and a similar home rents for $2,000 per month, or $24,000 per year, the price-to-rent ratio is about 16.7. As a general guideline, a ratio below 15 tends to favor buying, because homes are relatively cheap compared to rents, while a ratio above 21 tends to favor renting, because home prices are high relative to what you would pay to rent the same space. Ratios in between are a gray area where personal factors dominate. This ratio helps explain why buying can be a clear win in an affordable Midwestern city yet a questionable choice in an expensive coastal market where prices have far outrun rents, and it gives you an objective starting point before layering in your own circumstances.

Frequently Asked Questions

Is it always better to buy than rent?

No. Buying is not automatically better, despite the common belief that renting is throwing money away. Renting can be the smarter choice if you plan to move within a few years, live in a market with a high price-to-rent ratio, or would invest the down payment and cost difference for higher returns. Buying tends to win over long time horizons and in affordable markets, but the right answer depends on your specific numbers and plans.

What is the break-even point for buying?

The break-even point is how long you must own a home before buying becomes cheaper than renting, once you account for closing costs, selling costs, and ongoing ownership expenses. For many markets this falls somewhere around five years, though it can be shorter in affordable areas and much longer in expensive ones. If you expect to move before reaching the break-even point, renting is usually the more economical choice.

What hidden costs should I include when buying?

When budgeting to buy, include property taxes (roughly 1% to 2% of home value annually), homeowners insurance, maintenance and repairs (about 1% of value per year), closing costs of 2% to 5% upfront, potential HOA fees, and eventual selling costs of about 6%. Also account for the opportunity cost of your down payment, the investment returns you forgo by tying that money up in the home rather than the market.

Learn more: Rent vs Buy: The Break-Even Math (2026 Update)