Should I rent or buy a home?
The answer isn't universal — it depends on your income, local market, how long you'll stay, and what you'd do with the money otherwise. Here's how to think about it with real numbers.
1. Buying vs Renting: The "Throwing Money Away" Myth
"Renting is throwing money away" is the most repeated — and most misleading — piece of financial advice. Here's why it's wrong:
When you rent, 100% of your rent goes to housing costs. But when you buy, a large chunk of your payment also goes to costs you'll never recover: mortgage interest, property taxes, homeowner's insurance, maintenance, HOA fees, and transaction costs (closing costs + agent commissions).
In the first years of a 30-year mortgage at 6.5%, roughly 80% of your payment is interest — money that goes straight to the bank, not to building equity.
The real question isn't "rent vs own." It's: does the equity you build by buying exceed what you'd earn by investing the difference while renting?
2. Price to Rent Ratio Explained
The simplest starting point is the price-to-rent ratio: divide the home price by the annual rent for a comparable property.
< 15
Favors buying
15–20
Gray area
> 20
Favors renting
For example: a $500,000 home where comparable rent is $2,500/month ($30,000/year) has a ratio of 16.7 — right in the gray area. But in San Francisco, where a $1.35M home might rent for $3,500/month ($42,000/year), the ratio is 32 — heavily favoring renting.
This ratio is a useful first filter, but it doesn't account for interest rates, tax benefits, appreciation, or your specific financial situation. For that, you need a more detailed analysis.
3. Rent vs Buy Math: Opportunity Cost Explained
The biggest hidden cost of buying isn't interest or taxes — it's opportunity cost. When you buy a home, you lock up a large amount of capital:
- Down payment: 20% on a $500K home = $100,000
- Closing costs: 2–5% = $10,000–$25,000
- Monthly premium: If buying costs $800/mo more than renting, that's $9,600/year not being invested
If that $100,000+ were invested in a diversified stock portfolio averaging 7% annual returns, it would grow to roughly $197,000 in 10 years — without you lifting a finger.
Our calculator models this precisely: it invests your down payment, closing costs, and any monthly savings from renting in a portfolio that compounds monthly. It then compares your total net worth under both scenarios at your planned exit date.
4. Is It Better to Rent or Buy? When Buying Wins
Buying tends to win when:
- You'll stay 7+ years — gives time for equity to overcome transaction costs
- The price-to-rent ratio is under 15 — monthly ownership costs are similar to renting
- Interest rates are low — more of each payment goes to principal
- The local market appreciates steadily — 3%+ annual home value growth
- You're in a high tax bracket — mortgage interest deductions save more money
- Rents are rising fast — your fixed mortgage payment becomes increasingly attractive
5. Is It Better to Rent or Buy? When Renting Wins
Renting tends to win when:
- You might move in under 5 years — closing costs eat into any equity gains
- The price-to-rent ratio exceeds 20 — buying is disproportionately expensive
- Interest rates are high — most of your payment goes to interest
- You can invest the difference — stock returns may outpace home appreciation
- The market is overheated — risk of price corrections or flat growth
- You value flexibility — job changes, relationship changes, or lifestyle shifts
6. Buying vs Renting Pros and Cons: Key Variables
After running thousands of simulations, these five variables have the biggest impact on the rent-vs-buy decision:
1. How long you'll stay
The single most important variable. Short stays (1–4 years) almost always favor renting. Longer stays (8+ years) usually favor buying.
2. Mortgage interest rate
A 1% change in rate shifts the breakeven by 2–4 years. At 5% vs 7%, the monthly cost difference is dramatic.
3. Home appreciation rate
If home values grow at 4%/year, buying wins much faster than at 2%/year. But assuming high appreciation is risky — markets can go flat or decline.
4. Investment return rate
Higher returns on your alternative investments make renting more attractive. At 10% stock returns vs 3% home appreciation, renting often wins long-term.
5. Down payment size
A larger down payment means more opportunity cost (money not invested). It also eliminates PMI, which helps buying. The net effect depends on your other variables.
Run your own numbers.
Our calculator models all 25+ variables for your specific situation — including SALT caps, opportunity cost, and closing costs.
Use Our Rent vs Buy Calculator