What Percentage of Income Should Go to Housing?

The 28% Rule

The traditional guideline — sometimes called the "front-end ratio" — says to spend no more than 28% of your gross (pre-tax) monthly income on housing.

Gross income ÷ 12 × 0.28 = maximum monthly housing cost

What Counts as "Housing Cost"?

For renters: rent + renter's insurance + utilities (if you pay them separately).

For homeowners: mortgage payment + property taxes + homeowner's insurance + HOA fees + roughly 1% of home value per year for maintenance.

A common mistake is comparing just the mortgage payment to the 28% rule. The all-in cost is often 30-50% higher.

Why 28%?

Housing is your largest single expense. When it's under control, everything else becomes more manageable. The 28% rule leaves room for:

• Taxes and benefits (25-30% of gross)
• Other necessities: food, transportation, utilities (~15%)
• Debt payments (~8%)
• Savings (15-20%)

When housing exceeds 35%, one or more of those buckets gets squeezed — usually savings.

When You Can Adjust the Rule

You can spend more (up to ~35%) if:

• You have no other debt
• You're saving aggressively (20%+)
• Your income is stable and growing
• The high cost is temporary (a city with strong career upside)

You should spend less (<25%) if:

• You have significant other debt
• Your income is variable or at risk
• You're behind on retirement savings
• You have kids or plan to have them soon

The Hidden Cost of "Housing Poor"

When housing takes 40%+ of income, small financial shocks become crises. A car repair, medical bill, or job loss can cascade immediately because there's no buffer.

The real cost isn't just what you pay in rent or mortgage — it's what you can't build: emergency fund, retirement savings, down payment for the next step.

FAQ

Is 28% of gross or net income?

The traditional rule uses gross (before taxes). Some people prefer to use net income, which gives a stricter target. 30% of gross ≈ 40% of net for a typical earner — both are commonly cited.

I live in NYC/San Francisco — is this realistic?

In very high cost cities, the 28% rule is often impossible. Many people in these cities spend 35-40% on housing and offset it by having no car, high income, or significant career upside. The rule is a starting point, not a ceiling that causes you to move.

Does this apply if I have roommates?

Use your share of the total housing cost. If rent is $3,000/mo split three ways, your housing cost is $1,000.