Rent vs take-home pay: the 30% rule, explained

"Spend no more than 30% of your income on rent" is the rule everyone quotes. It comes from federal housing policy, it's measured on income before tax, and it was never a law for renters. Here's what it means on the pay you actually take home.

Where the 30% rule came from

The figure started as a cap on public housing rents. According to HUD, the Brooke Amendment of 1969 capped public housing rent at 25% of a resident's income, and Congress raised the cap to 30% in 1981. HUD still uses 30% to measure affordability: a household paying more than 30% of its income for housing is "cost-burdened", and more than 50% "severely cost-burdened". HUD's own researchers note that the difference between pretax and posttax income can distort the measure.

Gross vs take-home: the gap is taxes

Thirty percent of a $60,000 salary is $1,500 a month. But that salary doesn't reach your account — federal tax, Social Security and Medicare come out first, and in most states a state income tax too. Thirty percent of what's left:

Single filer, paid every two weeks, standard W-4, no 401(k) or benefits; New York outside New York City.

So "30% of income" can mean a few hundred dollars more rent than 30% of what you can actually spend. Paying 30% of gross isn't wrong — it's HUD's line — but it leaves less for everything else than the percentage suggests.

Conservative, standard, stretch

Our calculators show three shares of take-home: 25% (conservative — the old 1969 cap, applied to net pay), 30% (standard) and 35% (stretch — workable when other costs are low, but past the 30% line). Another well-known budget, the 50/30/20 rule from Elizabeth Warren and Amelia Warren Tyagi's book All Your Worth, puts all needs — rent, utilities, groceries, insurance, minimum debt payments — in 50% of after-tax income, so rent has to share that half.

What landlords check

Many landlords screen applicants by gross income, commonly asking for about 3 times the monthly rent. That's a business practice, not a rule — landlords set their own requirements, and some accept a co-signer, savings or a larger deposit instead. On $60,000, a 3× screen allows up to $1,667 a month — more than 30% of gross, and far more than 30% of take-home. Being approved for an apartment doesn't mean it fits your budget.

Roommates and second earners

When two people share the rent, add their take-home pays, not their salaries. Two salaries of $60,000 and $40,000 in a state with no income tax take home $7,059 a month together, so 30% is $2,118 — compared with $2,500 from 30% of their combined gross. If the two earners live or work in different states, each one's take-home depends on their own state, which the rent calculator handles.

Work it out for your state

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Sources

• HUD USER, PD&R Edge — Rental Burdens: Rethinking Affordability Measures — cost-burdened: paying more than 30% of income for housing; severely: more than 50%; the 1969 Brooke Amendment capped public housing rent at 25% of income, raised to 30% in 1981; pretax vs posttax income affects the measure (checked 2026-09-27)
• IRS Publication 15-T (2026), Federal Income Tax Withholding Methods — Worksheet 1A and the annual percentage-method tables
• IRS Publication 15 (2026), Employer's Tax Guide — Social Security and Medicare rates
• Social Security Administration — 2026 wage base of $184,500