What is Rent vs Buy Financial Comparison?
A rent vs buy analysis compares the long-term financial outcomes of renting versus purchasing a US home, factoring in mortgage (PITI), maintenance, opportunity cost, closing costs, and appreciation.
The Formula
Buy TCO = PITI + Maintenance + HOA โ Equity Built โ Appreciation Rent TCO = Rent Payments โ Investment Returns on Saved Down Payment
Worked Example
Compare: rent at $2,000/month in Denver or buy a $400K home with $80K down at 6.75% 30-year fixed.
- Rent 10-year cost: $2,000 ร 120 = $240,000 (rising 3%/yr = ~$275,000)
- Buy 10-year P&I: $2,076 ร 120 = $249,120 + $58K taxes/insurance + $40K maintenance = $347,120
- Equity built: ~$58,000
- Appreciation (4%/yr Case-Shiller): $400K โ $592K = $192K gain
- Buy net position: $347K cost โ $250K equity/appreciation = $97K net cost
๐ Renting costs $275K over 10 years with zero equity. Buying has a $97K net cost after equity and appreciation, buying is ~$178K better off on a 10-year horizon.
Why This Matters
Wealth building
The Federal Reserve Survey of Consumer Finances shows US homeowners have median net worth of ~$396K vs ~$10K for renters, driven by forced savings and leveraged appreciation.
Payment stability
Fixed-rate 30-year mortgages lock your P&I for the life of the loan. US rents increased 3-5% annually per Zillow Observed Rent Index, steadily eroding renter purchasing power.
Retirement security
Owning free and clear by retirement eliminates your largest expense. Renters need 30-40% more retirement savings to cover lifetime housing costs.
Common Mistakes
โ Comparing rent to mortgage only
Ownership includes property taxes (1-2.5%), homeowners insurance, HOA, and maintenance. Add 40-60% to P&I for true PITI comparison.
โ Assuming property always appreciates
Case-Shiller shows US home values can decline 10-30% in downturns (2007-2012). Only buy if you can hold 7+ years to ride out cycles.
โ Ignoring opportunity cost of down payment
An $80K down payment invested in an S&P 500 index fund at 10% average historical returns grows to ~$207K in 10 years. Factor this into the rent vs buy comparison.
Industry Benchmarks
| Category | Good | Average | Poor |
|---|---|---|---|
| Break-even Period | 3-5 years | 5-8 years | Above 10 years |
| PITI-to-Rent Ratio | PITI <110% of rent | 110-130% | Above 150% |
| Down Payment | 20%+ | 10-20% | Below 5% |
Source: Case-Shiller Home Price Index & Federal Reserve Survey of Consumer Finances
Benchmark data sourced from Case-Shiller Home Price Index & Federal Reserve Survey of Consumer Finances.