Rent vs. Buy Calculator

Most rent-versus-buy comparisons focus solely on the monthly mortgage payment versus rent. This framing misses several large costs on both sides of the ledger. A complete ownership cost picture includes mortgage interest (which is the lender's portion of your payment, not equity), property taxes, home insurance, maintenance and repairs, HOA fees, and the opportunity cost of the down payment. On a $400,000 home with 20% down, these unrecoverable costs can easily total $30,000–$40,000 per year — often more than equivalent rent in the same area. Renters, meanwhile, lose 100% of their monthly rent with no equity accumulation, but they keep their down payment capital free to invest. The only productive comparison is total net worth over your expected holding period: equity accumulated by the buyer versus investment portfolio accumulated by the renter on the same cash flow. A buyer who holds for 15 years and benefits from substantial appreciation will almost always come out ahead. A buyer who sells in three years often comes out behind after accounting for closing and selling costs, which can total 8–10% of the home price on a round trip.

The opportunity cost of a down payment is one of the most underappreciated factors in the rent-versus-buy decision. When you put $80,000 toward a down payment, that capital cannot be invested elsewhere. If the stock market returns 7% annually over the next 15 years, that $80,000 would grow to approximately $220,000 — a gain of $140,000 that the homeowner forfeits by tying up the money in real estate equity. This does not automatically mean renting wins; it means the home needs to appreciate and generate equity that exceeds what the invested down payment would have produced. In markets where home prices grew 6–8% annually over the past decade, homeowners typically captured more wealth than renters who invested the equivalent. In flat markets where homes appreciated only 2–3% annually, the renter's investment portfolio often outperformed the homeowner's equity position. This calculator models both paths simultaneously, updating the crossover analysis in real time as you adjust appreciation and investment return assumptions. The key insight is that neither path is automatically superior — the outcome depends entirely on local market conditions, your time horizon, and what return the stock market delivers during your holding period.

The single most important variable in the rent-versus-buy equation is how long you plan to stay. Transaction costs for buying and selling a home are enormous relative to other asset classes. Closing costs when purchasing typically run 2–4% of the purchase price in lender fees, title insurance, and prepaid expenses. Selling costs, dominated by real estate agent commissions, typically add another 5–6%. On a $400,000 home, a round trip costs $28,000–$40,000 in transaction friction before any mortgage interest, taxes, or maintenance are counted. These costs must be recovered through appreciation and equity before buying becomes profitable relative to renting. For most typical market scenarios, the break-even point — the year at which the buyer's net worth surpasses the renter's — falls between year 5 and year 8. Short stays of under five years almost always favor renting unless home prices are appreciating exceptionally fast. Long stays of ten or more years almost always favor buying in most markets because accumulated equity and price appreciation overwhelm the early transaction-cost disadvantage. Use the Break-Even Year output from this calculator as your primary decision metric, then stress-test it with the Scenario Analysis to see how robust the result is under different market assumptions.

Financial analysis should inform but not dictate your housing decision. Homeownership offers benefits that do not appear in a spreadsheet: the freedom to renovate and personalize your space, the stability of a fixed housing cost for 30 years, a sense of community belonging, and the psychological security of owning your living environment. These are real and valuable. Renting, on the other hand, offers geographic flexibility — the ability to move for a job, a relationship, or simply a change of scene without the 6-month process and 8-10% cost of selling a home. For people in volatile careers, early-stage relationships, or industries that require relocation, the financial cost of forced premature selling can easily erase all the wealth-building advantages of homeownership. The best housing decision accounts for both the math and your specific life circumstances, risk tolerance, and five-year visibility into your career and family situation. Use this calculator to quantify the financial dimension clearly, then weigh it against the non-financial factors that matter most to you.