Rent vs Buy Calculator

How to Use This Calculator

1. Set the home price and down payment — enter the price of the home you're considering and your down payment as a percentage (20% avoids PMI).
2. Configure buying costs — set the mortgage rate, term, property tax rate, insurance, and maintenance. Defaults reflect US averages.
3. Set home appreciation — how much you expect the home to increase in value annually. The US historical average is about 3-4%.
4. Enter your rent details — your current monthly rent and the annual percentage you expect it to increase.
5. Choose a time horizon — how many years you plan to stay. Try different values to see when buying breaks even with renting.

Rent vs Buy: What the Numbers Really Mean

The rent-vs-buy decision is one of the biggest financial choices most people face. On the surface, it seems simple — compare your monthly mortgage to your rent. But the real analysis is much deeper because buying and renting have fundamentally different cost structures.

When you buy, your costs include the mortgage payment (principal + interest), property taxes, insurance, and maintenance. But you also build equity in two ways: your mortgage payments gradually reduce the loan balance, and the home (usually) appreciates in value. After 10 years of payments, you own a significant portion of an asset that has likely grown in value.

When you rent, your only housing cost is rent — but rent typically increases 3-5% per year. The key advantage is that you can invest your down payment in the stock market instead of tying it up in a house. At a 7% return, a $70,000 down payment grows to about $137,000 in 10 years.

The breakeven point — when buying becomes cheaper than renting — typically falls between 5 and 7 years. Before that, the high upfront and interest-heavy costs of buying usually make renting the better financial choice. After that, the fixed mortgage payment and rising equity increasingly favor buying.

This calculator helps you see exactly where that breakeven falls for your specific numbers. Try adjusting the time horizon to find the year when buying starts winning — and remember that non-financial factors (stability, flexibility, control over your space) matter too.

Frequently Asked Questions

Is it better to rent or buy a home?

It depends on how long you plan to stay, local prices, interest rates, and your financial situation. Buying typically becomes cheaper than renting after 5-7 years because you build equity and your mortgage payment stays fixed while rent rises. However, if you move frequently, renting avoids the high transaction costs of buying and selling (typically 8-10% of home value).

What costs does this calculator include for buying?

The buying side includes your monthly mortgage payment (principal + interest), property taxes, homeowner's insurance, and maintenance costs. It also tracks the equity you build through mortgage payments and home appreciation. The renting side includes monthly rent with annual increases and the investment returns you'd earn if you invested the down payment instead.

What is the opportunity cost of a down payment?

When you buy a home, your down payment is locked in the property. If you rented instead, you could invest that money in stocks or bonds. This calculator models that — it shows what your down payment would grow to if invested at your expected return rate. A $70,000 down payment invested at 7% grows to about $137,000 in 10 years.

How does home appreciation affect the decision?

Home appreciation is one of the biggest factors favoring buying. At 3% annual appreciation, a $350,000 home is worth $470,000 after 10 years. This $120,000 gain is effectively tax-free up to $250,000 ($500,000 for couples) when you sell your primary residence. However, appreciation varies widely by location and isn't guaranteed.

Why does the time horizon matter so much?

Buying has high upfront costs (down payment, closing costs) and high ongoing costs in the early years (when mortgage payments are mostly interest). Over time, equity builds and rent keeps rising, making buying more attractive. Short stays (1-3 years) almost always favor renting. Stays of 7+ years usually favor buying, assuming normal appreciation.

What about closing costs, PMI, and tax deductions?

This calculator focuses on the core costs for a clear comparison. Closing costs (2-5% of price) add to buying costs. PMI (required with less than 20% down) adds $100-300/month. Mortgage interest tax deductions reduce buying costs slightly, but since 2018 fewer homeowners itemize. For a precise analysis, add closing costs to the home price and factor PMI into insurance.

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