Estimate how much rent you can afford based on income and the 30% rule.
The 30% rule — spending no more than 30% of gross income on housing — has been the standard US affordability benchmark since the 1981 Omnibus Budget Reconciliation Act defined 30% as the threshold above which a household is considered 'cost-burdened.' In practice, many households in high-cost cities spend more and still manage; others in lower-cost areas target 25–28% to save aggressively. The right number depends on your income, debts, savings rate and local costs.
30% rule
Max Rent = Gross Monthly Income × 30%
With separate utilities
Net Rent Budget = Gross Monthly Income × 30% − Monthly Utilities
The 30% rule is a guideline. Actual affordability depends on your full financial picture including savings rate, local cost of living and career stability.
The original rule and most lenders use gross income because it's consistent and harder to manipulate. In practice, applying it to take-home income is more conservative — especially in high-tax states where the difference between gross and net is large.
Many residents of New York, San Francisco and similar cities spend 40–50% on housing. If you're in that situation, the key is to make sure your other spending (food, transport, debt) is lean enough to still cover savings. The 50/30/20 framework (50% needs, 30% wants, 20% savings) can be more useful than a single housing rule.
Traditionally, the benchmark covers total housing costs — rent plus utilities. Toggle the 'utilities included' option to account for this correctly. Many listings quote rent without utilities, so your true housing cost is higher than the rent alone.
The 30% rule applies only to housing. If your total debt load (housing + other debts) exceeds 36–43% of gross income, lenders will flag this in mortgage underwriting. For renters, high debt is a budget problem: less of the 70% left after housing is available for savings and discretionary spending.