The 5% Rule

The true annual cost of owning a home—taxes, maintenance, insurance, utilities, and opportunity cost combined—approximates 5% of the home's value. This simple rule cuts through the noise of mortgage advertising and lets you answer the central question: should you rent or buy?

Key takeaways

• Total annual ownership cost (excluding mortgage principal) typically runs 4–6% of home value; 5% is a practical baseline.
• This includes property tax (0.5–2% in most U.S. states), maintenance and repairs (1–3%), insurance (0.5–1.5%), HOA or utilities, and forgone returns on the down payment.
• Rent is often cheaper than the 5% rule cost when mortgage-free opportunity returns exceed 5% annually (as they have in equities over the long term).
• The rule applies to middle-market owner-occupied homes; ultra-low-tax states or sub-1% maintenance regions will score below 5%, while rust-belt or high-tax areas may exceed it.
• Use the rule as a first-pass screen, not gospel—plug local numbers (your property tax rate, your maintenance history) into a full spreadsheet for the final call.

Where does 5% come from?

The figure isn't magic. It emerged from decades of real-estate and mortgage data, codified by Harold Pollack and others who studied housing affordability across metro areas. Here is the arithmetic:

Property tax — The U.S. median is roughly 0.8% of home value annually, but this varies wildly. New Jersey averages 2.5%; Wyoming 0.6%. Texas falls around 1.3%. If your county publishes property tax rates, use them; otherwise, assume 1% as a conservative middle ground.

Maintenance and repairs — A 2002 Fannie Mae study found that the U.S. average for owner-occupied homes is 0.8–1.2% annually. This covers roofing, HVAC, plumbing, painting, driveway repair, appliance replacement. Older homes and harsh climates can double this; new homes in mild climates may spend only 0.5%. A practical rule: reserve 1–1.5% of home value per year and live within it, or face surprises.

Insurance — Homeowners insurance in 2024 averages 0.5–1.5% of home value depending on location, age, and coverage. Coastal properties, earthquake-prone regions, and older wood-frame houses pay more. Check your specific premium against your home's value.

Utilities and maintenance of systems — Property taxes don't include electric, gas, water, sewer, garbage, yard upkeep, and snow removal. These cluster around 1–2% of home value in temperate climates, more in cold regions. A $400,000 home might see $4,000–8,000 annually in utilities and yard work.

Opportunity cost of down payment — If you deploy $100,000 down on a $500,000 home, that capital could otherwise earn equity returns elsewhere. At 7% annual returns (a long-term U.S. equity average), you forgoe $7,000 annually. Expressed as a percentage of home value: 1.4%. This is not a cost you pay in cash, but it is a cost in terms of your net worth trajectory.

Add these up: 1% (tax) + 1% (maintenance) + 0.75% (insurance) + 1% (utilities) + 1.4% (opportunity) = 5.15%.

Comparing rent to the 5% number

Suppose you're considering a $400,000 home in a suburban neighborhood. The 5% rule says annual ownership cost is roughly $20,000. Divide by 12 months: $1,667 per month in non-mortgage cost alone.

The local rent for a comparable three-bedroom is $2,200 per month, or $26,400 per year.

On the surface, rent appears more expensive. But this comparison omits the mortgage payment itself. If your mortgage (principal + interest at current rates) is $2,000 per month, your total housing cost is $3,667 per month to own versus $2,200 to rent. Ownership is more expensive.

However, over 15 years, you own the home outright and owe nothing. The renter's cost grows with inflation and rent increases; the mortgaged owner's payment stays fixed. This is where time horizon enters—a concept we explore in depth in a companion article. The 5% rule is only a first screen.

Why this rule works across different markets

The 5% rule has traveled well from the Northeast to the Southwest, from high-tax states to low-tax states. The reason: while tax rates and maintenance costs vary, they tend to move together. High-tax, old-infrastructure areas (northeast corridor, parts of the Midwest) have higher property taxes but older, more fragile homes requiring expensive maintenance. Low-tax, newer-development areas (Sun Belt) have smaller maintenance costs but sometimes more expensive insurance due to hurricane risk.

For a more granular comparison in your specific market, gather local data: your county's effective property tax rate (check the assessor's office), your insurance quote, and typical maintenance costs for homes of your type and age. Plug these into the spreadsheet method for precision.

Common mistakes with the 5% rule

Mistake 1: Forgetting opportunity cost. Many renters and first-time buyers ignore the returns they could have earned on a down payment. If you put $120,000 down and ignore the 7% annual return you forgo, you'll underestimate ownership cost by about $8,400 per year.

Mistake 2: Using list price, not your actual acquisition cost. The 5% rule scales with what you pay, not asking price. If you negotiate a $400,000 home down from $425,000, your 5% baseline is $20,000, not $21,250.

Mistake 3: Ignoring local property tax policy. Texas has no income tax but high property taxes. New York has both. California caps assessment increases. Your actual tax bill depends on state law, not the national average. Look it up.

Mistake 4: Underestimating maintenance on older homes. A 1970s brick ranch in the Midwest may need $10,000 roof work in year 3 and HVAC replacement in year 8. Budget 2–3% of value annually if your home is more than 25 years old.

When the 5% rule breaks down

The rule assumes a full-value purchase (no leverage beyond a normal mortgage) and a 15–30 year hold. It struggles in three scenarios:

1. Very cheap leverage: If you can refinance at 2.5% and earn 8% in equities, the math shifts. The opportunity cost becomes irrelevant because borrowed money at 2.5% beats stocks at 8%—that's rare and won't last. As of 2024, this environment is gone.

2. Commercial or rental property: The rule applies to owner-occupied homes. For rentals, cash flow and tenant behavior dominate; for commercial property, cap rates and local market cycles take over.

3. Homes held for very short periods: If you're staying two years, transaction costs (5–10% of value combined buy and sell) matter enormously and often make renting cheaper regardless of the 5% number.

The decision tree

The image below shows how the 5% rule fits into the larger rent-versus-buy framework:

Related concepts

• Price-to-Rent Ratio
• Opportunity Cost of Down Payment
• Maintenance: The Hidden Cost

Next

The 5% rule is a first-pass filter. A price-to-rent ratio under 15 strengthens the case for buying; over 20 tips the scales toward renting. The next article quantifies this ratio and shows why it's often more reliable than the 5% number alone across different geographies.