Your complete resource for understanding the Section 8 Housing Choice Voucher Program — eligibility, applications, finding approved apartments, and tracking waitlists nationwide.
"Affordable housing" gets used in news coverage, policy debates, and everyday conversation — but the term means different things depending on context. For someone trying to understand federal rental assistance programs like Section 8, it helps to separate the general definition from how affordability is actually measured and applied in practice.
The most widely used benchmark in U.S. housing policy is that a household should spend no more than 30% of its gross (pre-tax) monthly income on housing costs. This figure — sometimes called the affordability threshold — comes from federal housing guidelines and has been used for decades to define what "affordable" means for a given household.
Housing costs typically include rent plus any utility costs the tenant is responsible for. When combined, these are sometimes referred to as gross rent.
A household spending more than 30% of income on housing is generally considered cost-burdened. A household spending more than 50% is considered severely cost-burdened.
These thresholds don't determine eligibility for any specific program on their own — but they form the conceptual foundation for how programs like the Housing Choice Voucher (HCV) program are designed.
The Section 8 Housing Choice Voucher (HCV) program, funded by the U.S. Department of Housing and Urban Development (HUD) and administered locally by Public Housing Authorities (PHAs), is built around this 30% framework — though it applies in a specific way.
Under the HCV program:
This means "affordability" under Section 8 isn't a fixed dollar amount. It shifts based on a household's income, the local payment standard, and any applicable utility allowance (a credit given to tenants who pay their own utilities).
A rent that's affordable in a rural county may be out of reach in a major metro area — and vice versa. This is why HUD sets Area Median Income (AMI) figures by geographic area each year. AMI reflects the midpoint of incomes in a given housing market and is used to:
| Term | What It Measures |
|---|---|
| AMI (Area Median Income) | Midpoint income for a geographic area, used as a benchmark |
| Income Limit | Maximum income to qualify (usually 50% AMI for HCV) |
| Fair Market Rent (FMR) | HUD's estimate of market-rate rent for a unit size in an area |
| Payment Standard | PHA's locally set ceiling for subsidy calculation |
| Gross Rent | Rent + tenant-paid utilities |
| Utility Allowance | PHA credit for tenant-paid utilities |
Beyond individual affordability, "affordable housing" also refers to a category of housing — units restricted by funding, deed, or regulation to serve households at or below certain income levels. This includes:
Tenant-based vouchers (the standard HCV) differ from these in that the subsidy follows the household, not the unit. A voucher holder can use their voucher at any privately owned unit that meets program requirements — as long as the landlord agrees to participate, the unit passes a Housing Quality Standards (HQS) or NSPIRE inspection, and the rent is approved as reasonable compared to similar unassisted units nearby.
Understanding the 30% benchmark, AMI tiers, and payment standards gives you the framework — but it doesn't tell you what's affordable for your household in your market under your local PHA's rules.
What your actual tenant share would be, whether a specific unit qualifies, what payment standard applies to your bedroom size, or how your income is calculated for program purposes — those depend on details specific to your household, your local PHA, and the unit itself.
PHAs publish their payment standards, utility allowance schedules, and administrative plans, and they're the authoritative source on how these figures apply in a given jurisdiction. What counts as affordable under the HCV program in one city may look very different from the same program administered 50 miles away.
Select your state to view local waitlists, PHAs, and application information.