Rent vs Buy Calculator
Renting vs. Buying — Running the Real Numbers
This is one of the most consequential financial decisions most people will ever make, and it's surrounded by myths in both directions. "Renting is throwing money away" and "buying always wins long-term" are both oversimplifications. The truth depends on your numbers, your timeline, and your local market — which is exactly what this calculator is built to show you.
How to Use This Calculator
Enter your monthly rent and the details of the home you're considering buying — price, down payment, interest rate, term, property tax rate, insurance, and annual maintenance. Set your annual rent increase and home appreciation expectations, and choose how many years to compare. Hit Compare to see the total cost of each path and which comes out ahead over your chosen timeframe.
How the Comparison Works
The calculator tracks two running totals:
- Renting: cumulative rent paid, increasing annually by your rent increase rate
- Buying (net cost): all ownership costs paid (mortgage principal and interest, property tax, insurance, maintenance) minus the equity you've built through principal paydown and home appreciation
The net buy cost is what buying the home actually cost you in out-of-pocket money after accounting for what you'd walk away with if you sold at the end of the period. The lower number is the better financial choice over that timeframe.
What Is Equity and Why Does It Matter?
Equity is the portion of your home's value that you actually own — the market value minus the remaining mortgage balance. It grows two ways: every mortgage payment includes a portion that reduces your principal balance, and home appreciation increases the market value of your asset.
Equity is the fundamental reason buying can beat renting over long periods. Rent payments disappear entirely; mortgage payments partially build an asset. The longer you stay and the more the home appreciates, the larger equity's impact on the net cost comparison.
The Break-Even Timeline
In most markets, renting is cheaper than buying in the short term (years 1–5) because of the high upfront costs of homeownership: down payment, closing costs (typically 2–5% of purchase price), and the interest-heavy early years of a mortgage where little principal is paid down. Over time, equity accumulation and rising rents shift the math toward buying.
The break-even point — where the net cost of buying equals the total cost of renting — typically falls somewhere between 5 and 10 years depending on the market. Use the "Compare Over" selector to find your break-even by testing different timeframes.
Factors That Favor Renting
- You plan to move within 3–5 years
- Local home prices are very high relative to rents (high price-to-rent ratio)
- You value flexibility for career or lifestyle changes
- You don't have funds for a down payment without depleting your emergency fund
- The local market has low appreciation expectations
Factors That Favor Buying
- You plan to stay for 7+ years
- Rents in your area are high and rising quickly
- Home prices in your area have historically appreciated steadily
- You have a stable income and adequate down payment without over-extending
- You value the stability and freedom of owning your space
Frequently Asked Questions
Is renting really "throwing money away"?
No — rent pays for housing, which is a real service. What rent doesn't do is build equity. But mortgage interest, property taxes, insurance, and maintenance are also "non-recoverable" costs of homeownership that don't build equity either. The honest comparison is between total net costs, not the misleading framing of "rent = waste."
What home appreciation rate should I use?
US home prices have historically appreciated at roughly 3–4% annually over long periods, though this varies enormously by location and time period. Using 3% is a conservative assumption for planning purposes. In high-growth metros, 4–5% may be appropriate; in slower markets, 1–2% is more realistic. Be honest — optimistic appreciation assumptions can make buying look far better than it will actually be.
Does this calculator include closing costs?
Not directly. Closing costs (typically 2–5% of the purchase price) are a real upfront cost of buying that further delays the break-even point. To account for them, either mentally add 2–3 years to your break-even timeline or reduce the appreciation rate slightly to simulate their drag on returns.
What if I invested the down payment instead of buying?
This is the opportunity cost argument for renting. If you'd put 10% down on a $400,000 home ($40,000), you could instead invest that $40,000 in the stock market. At 7% annual returns over 10 years, that $40,000 grows to ~$79,000. A complete rent-vs-buy analysis includes this comparison — the calculator's equity figure represents the return on the down payment through real estate appreciation and principal paydown.
How long should I plan to stay before buying makes sense?
As a rough rule, if you plan to stay fewer than 5 years, renting is usually more cost-effective in most markets. At 7+ years, buying typically wins. The 5–7 year window is where the answer depends most on local conditions. Use this calculator with your actual numbers and test the 5, 7, and 10-year windows to find your personal break-even.