Find the maximum rent you can comfortably afford using HUD's 30% cost-burdened threshold with real ACS median rent and income data for 32,000+ US cities.
The oldest yardstick in housing is the 30% rule: a household is considered cost burdened once rent and utilities cross 30% of gross income, and severely cost burdened at 50%. That threshold is HUD's, and it drives everything from federal subsidy math to the way tenant-screening income multiples are set. In Washington the gap between that rule and the market is wide. HUD's two-bedroom fair market rent for the state runs $2,138 a month, and affording it at 30% of income takes a full-time wage of $41.11 an hour — well above the $33.63 national housing wage and more than double Washington's $16.66 minimum wage. For landlords, understanding where an applicant's income falls against that math is the difference between a tenant who pays comfortably and one who is a bad month from arrears.
The 30%-of-income benchmark is not a Washington invention or a lender's rule of thumb — it is HUD's formal definition of housing affordability, carried through the federal Comprehensive Housing Affordability Strategy (CHAS) data that agencies use to allocate funding. A household paying 30% or more of gross income on rent plus utilities is cost burdened; at 50% or more it is severely cost burdened. The figure is deliberately gross income, before taxes and deductions, which is also how most landlords calculate it during screening.
The rule is a national baseline, applied identically in every state. What changes from Washington to, say, West Virginia is not the percentage but the rent behind it. The same 30% ceiling buys a very different apartment depending on the local market, which is why the dollar income needed to stay under it is the number that actually matters to a landlord.
Translate the 30% rule into Washington dollars and the demands are steep. HUD's two-bedroom fair market rent is $2,138 a month. To keep that at or under 30% of gross income, a household needs to earn $85,501 a year, or about $7,125 a month — equivalent to a full-time housing wage of $41.11 an hour. A one-bedroom is easier but still stiff: it takes $34.47 an hour to clear the 30% line.
Set those against what people actually earn. Washington's average renter household income is $69,894 — roughly $15,600 short of the income the 2BR standard assumes. The state minimum wage is $16.66 an hour, less than half the two-bedroom housing wage. Even Washington's overall average household income of $99,389 (a figure that includes higher-earning owners) only comfortably clears the two-bedroom threshold, and does so statewide, not in the expensive Puget Sound markets where most rentals sit. Washington's housing wage also sits well above the $33.63 national figure, confirming it as one of the higher-cost rental states in the country.
The affordability math is not theoretical. As of the 2021 American Community Survey, roughly 46% of Washington renter households were cost burdened — paying 30% or more of income on housing. State agencies report the strain has kept climbing: the Washington Department of Commerce and the Economic Opportunity Institute have documented rent burden across all Washingtonians rising above 50% in 2023.
For a landlord, that context cuts two ways. A large share of the applicant pool is, by HUD's own definition, already overextended, which raises the odds that a marginal applicant will struggle with a rent increase, a utility spike, or a lost shift. It also means a truly qualified applicant — one whose income clears the 30% line with room to spare — is genuinely scarce and worth retaining.
Landlords rarely quote the 30% rule directly; they convert it into an income multiple. The common standards are 3x the monthly rent in gross income (which puts rent at about 33% of income — essentially the 30% rule) and, in tighter markets, 2.5x (rent at roughly 40% of income). A $2,138 apartment under a 3x rule requires about $6,414 in gross monthly income; under 2.5x, about $5,345.
These multiples are a business practice, not a legal requirement. Washington's screening statute, RCW 59.18.257, requires landlords to disclose the criteria they use and limits what they can charge for screening, but it does not set or cap an income-to-rent ratio. That leaves the multiple to the landlord — so pick one, apply it consistently to every applicant, and put it in writing in your advertised screening criteria to stay on the right side of both RCW 59.18.257 and fair-housing rules.
Enter a monthly rent and an applicant's gross monthly or annual income to see three things at once: the rent-to-income ratio against the 30% cost-burden line, whether the applicant clears a 3x or 2.5x income multiple, and how the figures compare with Washington's average renter income of $69,894. Use gross income, count only verifiable and stable sources, and remember that the ratio is a starting filter, not the whole decision — a strong rental history or reserves can offset a borderline number, and a thin ratio on a high income can still spell trouble if the income is seasonal.
Pick one of the largest US cities to see your budget against actual ACS median rent and income for that city.
Figures on this page are drawn from primary sources: HUD's Comprehensive Housing Affordability Strategy (CHAS) for the 30%/50% cost-burden definitions; the National Low Income Housing Coalition's Out of Reach 2025 report for Washington's $2,138 two-bedroom fair market rent, the $41.11 and $34.47 housing wages, the $85,501 income needed, the $69,894 average renter household income, and the $16.66 state minimum wage; the U.S. Census Bureau 2024 ACS 1-year estimate for the $99,389 state average household income; and the Washington Department of Commerce and Economic Opportunity Institute for cost-burden trends. Screening standards reflect RCW 59.18.257 and common landlord practice, not a statutory income-to-rent cap. This page is general information for Washington landlords, not legal advice; confirm current fair market rents and screening obligations before acting.
Median rent and income from U.S. Census Bureau ACS 5-year tables B25064 and B19013. Cost-burdened threshold per HUD glossary. Calculator output is informational, not financial advice. Last updated August 15, 2026.
