What is the 5-Year Rule in real estate?

The 5-Year Rule states that you should generally not buy a home unless you plan to live in it for at least 5 years. This is because the upfront closing costs (realtor fees, loan origination fees) take several years of property appreciation to offset.

What are the hidden sunk costs of homeownership?

When you buy a home, only a small portion of your monthly payment builds equity. The rest is lost to interest, property taxes (1-2% annually), home insurance, and routine maintenance (1-2% annually).

When does it make sense to rent forever?

If you live in a highly inflated market where the cost to buy is drastically higher than the cost to rent (like San Francisco or New York), renting and investing the difference in the stock market can mathematically build wealth faster than buying.

Rent vs Buy Calculator

Is renting really throwing money away? Compare the unrecoverable sunk costs of buying (interest, taxes, maintenance) against the cost of renting over a 10-year horizon to find out which option builds more wealth.

Home Purchase

Home Price

Down Payment (%)

Interest Rate

Property Tax

Renting Scenario

Current Monthly Rent

Annual Rent Increase

After 10 Years...

Buying is Better

Based on sunk costs (rent vs interest + taxes), buying builds more wealth over a 10-year period.

Total Sunk Cost (Buying)

$301,998

Money lost to interest, taxes, and maintenance over 10 years.

Total Sunk Cost (Renting)

$360,183

Money lost to rent payments over 10 years.

Monthly Cash Flow Year 1

Estimated Monthly Mortgage (Buy)$2,923/mo

Initial Monthly Rent$2,500/mo

Note: Buying requires a $80,000 down payment upfront. Rent increases annually, while the mortgage P&I remains fixed for 30 years.

How to Use the Rent vs Buy Calculator

Using our rent vs buy calculator is simple and requires no registration:

Enter the Home Price of the house you want to buy, along with your planned Down Payment percentage.
Input current Mortgage Interest Rates and your local Property Tax Rate.
Enter your Current Monthly Rent for a comparable home.
The calculator will compare the total unrecoverable 'sunk costs' of both scenarios over a 10-year period to determine the true financial winner.

Why Use a Rent vs Buy Calculator?

The decision to rent or buy is the largest financial choice you will make in your life. This Rent vs Buy Calculator removes the emotional bias and compares the pure mathematics of unrecoverable costs, ensuring you don't make a six-figure mistake.

The Truth About Renting vs. Buying in 2026

For decades, financial advisors have blindly repeated the phrase, "Renting is throwing money away." In today's macroeconomic climate, this is mathematically false. A rent vs buy calculator is essential because the right decision depends entirely on interest rates, property taxes, and how long you plan to stay in the home.

Buying a home comes with massive unrecoverable "sunk costs" that rival or even exceed the cost of renting. To make an informed decision, you must compare the unrecoverable costs of renting (your monthly rent) against the unrecoverable costs of buying.

The Hidden Sunk Costs of Homeownership

When you pay your mortgage, only a small fraction of the payment actually goes toward the principal loan balance (building equity). The vast majority of your monthly payment vanishes into thin air.

Unrecoverable Buying Costs

Interest: For the first 10 years of a 30-year mortgage, roughly 70% to 80% of your payment is just interest paid to the bank. This money is gone forever.
Property Taxes: You must pay the government 1% to 2% of the home's value every single year, forever.
Maintenance: Roofs, HVACs, and plumbing break. Expect to spend 1% to 2% of the home's value annually on upkeep.
Closing Costs: Buying and selling a home costs roughly 6% to 10% in realtor fees and closing costs.

When is Renting Mathematically Better?

Renting is often mathematically superior if you plan to move within 5 to 7 years. Because closing costs are so expensive (often $20,000 to $40,000 on a standard home), you must stay in the house long enough for the property appreciation to cover those transaction costs.

Additionally, if the local housing market is vastly overvalued relative to rent prices, renting and investing the difference into an S&P 500 index fund can actually build wealth much faster than buying. If a home costs $5,000 a month to own but only $2,500 a month to rent, the savvy investor rents the home and invests the $2,500 difference in the stock market.

Understanding the Breakeven Point

The rent versus buy calculator focuses on the 10-year horizon because of the "Breakeven Point." This is the exact year where the total accumulated sunk costs of renting finally surpass the total accumulated sunk costs of buying.

While renting is cheaper in the short term, homeownership locks in your monthly payment (hedging against inflation) and allows your property to appreciate in the background. If you plan to stay in a home for 10, 15, or 30 years, buying is almost always the correct financial decision.