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.
Rent affordability comes down to a single ratio: how much of a tenant's gross income the rent consumes. The federal benchmark, set by HUD, is that housing costs above 30% of gross income make a household “cost-burdened,” and above 50% “severely cost-burdened.” In Colorado that line is under real pressure: the statewide average gross rent runs about $1,822 a month against a average household income near $95,470, and the average rent-to-income ratio has climbed to 33.2% — already past the 30% mark. More than half of Colorado renters pay at least 30% of income toward housing.
For landlords, affordability screening in Colorado carries a wrinkle most states don't have. Under the Rental Application Fairness Act (SB 23-184, C.R.S. 38-12-904), you may not require an applicant to earn more than 200% of the cost of rent — a 2x floor, not the 3x rule of thumb common elsewhere. This page explains the math, the Colorado numbers behind it, and how to build an income standard that is both defensible and legal.
The 30% affordability standard is a HUD convention, not a Colorado statute. It says a household should spend no more than 30% of gross (pre-tax) income on rent plus utilities. Cross that line and the household is “cost-burdened”; cross 50% and it is “severely cost-burdened.” The rule is a national screening baseline, not a legal cap on what you can charge or a guarantee of what a tenant can pay.
Worked example: at Colorado's average gross rent of about $1,822/month, the 30% rule implies a tenant should earn roughly $6,073 a month, or about $72,900 a year, for that rent to sit at the affordability line. The same rent against a lower income of $50,000 lands near 44% of income — deep into cost-burdened territory. That gap is why income verification, not just credit, drives most default risk.
Statewide, the Census Bureau puts Colorado's average gross rent near $1,822 a month (2024) and average household income at roughly $95,470. On paper that looks comfortable, but the renter picture is tighter than the all-household figure suggests: the average rent-to-income ratio reached 33.2% in 2024, and more than half of Colorado renters pay 30% or more of income on housing.
The strain concentrates at the bottom. Among extremely low-income renters (0–30% of area average income), roughly 89% are cost-burdened and 79% severely cost-burdened. For a landlord, the practical takeaway is that an applicant clearing your income multiple on the high end of the market is common, but applicants near the average rent are frequently living close to or past the 30% line — making a documented income standard, not a gut check, the right tool.
Most private-market landlords translate the 30% rule into a monthly-income multiple. A tenant at exactly 30% of income earns about 3.3x the rent, which is why the familiar “3x rent” rule exists — it bakes in a small cushion below 30%. Some operators use 2.5x for higher-rent units where a strict 3x would exclude most of the market. These multiples are industry convention, not statute.
In Colorado, the convention runs into a hard legal ceiling. Under C.R.S. 38-12-904 (SB 23-184), a landlord may not require an applicant to have income exceeding 200% of the cost of rent — that is, no more than 2x rent. So while you can prefer stronger applicants, you cannot set a stated minimum income requirement above 2x monthly rent. On a $1,822 unit, the highest income floor you may require is about $3,644/month, not the $5,466 a 3x rule would demand.
Two Colorado laws reshape how you can apply an affordability standard. First, the 200%-of-rent income cap under the Rental Application Fairness Act (C.R.S. 38-12-904) limits the minimum income you may require to 2x rent. Second, source-of-income protection under HB 20-1332 (effective Jan 1, 2021; C.R.S. 24-34-502) bars landlords with more than three units from rejecting an applicant because their income comes from a lawful source such as a Housing Choice Voucher.
These interact directly with affordability screening. For a voucher holder, the tenant's out-of-pocket share — not the full contract rent — is what counts toward their income test, and you generally cannot layer a full-rent income requirement on top of a subsidy. In practice, apply your income multiple to the portion of rent the tenant actually pays, cap any stated requirement at 2x, and keep your written standard identical across all applicants to stay clear of both statutes.
A clean Colorado income policy has four parts. State the multiple in writing (for example, “gross monthly income of at least 2x rent”) and apply it uniformly. Cap it at 2x to comply with C.R.S. 38-12-904. Count all lawful income — wages, benefits, subsidies, and voucher assistance — consistent with HB 20-1332. And verify, don't estimate: use pay stubs, offer letters, benefit award letters, or bank statements rather than eyeballing an application.
Because more than half of Colorado renters already sit at or above the 30% cost-burden line, a rigid high multiple will shrink your applicant pool without necessarily lowering default risk. Pairing a lawful 2x income floor with rental-payment history and a reasonable reserve check tends to predict on-time payment better than income alone.
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: average gross rent and household income from the U.S. Census Bureau American Community Survey (2024, table B25064 and QuickFacts, reported via USAFacts); cost-burden rates from Colorado Fiscal Institute and Mile High United Way analyses of Census PUMS data; and screening rules from Colorado statute — C.R.S. 38-12-904 (SB 23-184, Rental Application Fairness Act) and HB 20-1332 (source-of-income protection, C.R.S. 24-34-502). The 30% affordability threshold is HUD's national standard. Dollar figures reflect statewide averages and will differ by metro; this page is general information, not legal advice — confirm current statute text and your local ordinances before setting a screening policy.
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 July 14, 2026.
