The basic formula: your income, the fair market rent, and your share

Section 8 rent is calculated using a formula that compares your household income to the fair market rent for your area. You pay 30 percent of your adjusted monthly income toward rent. The housing authority pays the landlord the difference, up to the payment standard — a cap set by your local Public Housing Authority (PHA) based on what similar units rent for in your area.

If your 30 percent share is higher than the payment standard, you pay the difference yourself. If your 30 percent share is lower, you pay only what you owe. The housing authority never pays more than the payment standard, regardless of what the actual rent is.

This means your rent contribution stays the same even if your landlord raises the rent — unless your income changes. The landlord absorbs any increase above the payment standard, which is why some landlords are reluctant to accept Section 8 tenants.

Key Takeaways

  • You pay 30 percent of your adjusted monthly income; the housing authority pays the rest up to the payment standard for your area.
  • The payment standard is set by your local housing authority and varies by bedroom size and neighborhood, not by what your landlord actually charges.
  • Your income is adjusted by subtracting deductions like dependent allowances, medical expenses, and childcare costs before the 30 percent is calculated.
  • If your income changes, your rent contribution changes; the housing authority recalculates it at your annual recertification or when you report a change.
  • You are responsible for any rent above the payment standard, even if your landlord's asking price is higher.

What counts as your adjusted income

The housing authority does not use your gross income. They start with your total household income, then subtract specific deductions to reach your adjusted income. This adjusted figure is what gets multiplied by 30 percent.

Standard deductions include a $480 dependent allowance for each child under 18, a $400 allowance for each elderly or disabled household member, and medical expenses for elderly or disabled members that exceed 3 percent of your gross income. If you pay for childcare so you can work, that cost is deducted. Some housing authorities also deduct a portion of earned income for working adults.

The exact deductions vary by housing authority. When you are recertified each year, the PHA will ask for documentation of these expenses — medical bills, childcare invoices, proof of dependent status. Keep records of what you spend.

Payment standards: how your area's rent cap is set

The payment standard is not the average rent in your neighborhood. It is a number set by your local housing authority, usually based on data about what units of each size rent for in your area. A one-bedroom payment standard might be $900 per month; a three-bedroom might be $1,400. These numbers change year to year.

Payment standards are published by bedroom size and sometimes by neighborhood or zip code. Your housing authority's website lists the current payment standards. If you are looking at a unit, you can check whether the rent is at, below, or above the payment standard for that bedroom size in that location.

The payment standard is a ceiling, not a target. If the landlord charges $1,200 for a one-bedroom and the payment standard is $900, the housing authority pays $900 and you pay $300 plus your 30 percent share of income. If the landlord charges $700, the housing authority pays $700 minus your share.

How your annual recertification affects your rent

Once a year, your housing authority recertifies your income and household composition. You report your current income, any changes in family size, and updated deduction documentation. The PHA recalculates your adjusted income and your 30 percent rent contribution.

If your income has gone up, your rent goes up. If it has gone down, your rent goes down. If a household member moved out or a child aged out of the dependent allowance, your deductions change and your rent may increase. These changes take effect on your recertification anniversary date, not when ready.

If your income changes significantly between recertifications — you lose a job, get a raise, or a household member leaves — you can report the change and ask for an interim recertification. The timing and whether the change is processed before your next annual recertification depends on your housing authority's policy.

When you pay more than 30 percent of your income

You are responsible for any rent above the payment standard, even if it means paying more than 30 percent of your income. This happens when a landlord charges more than the payment standard allows.

For example: your adjusted income is $2,000 per month, so your 30 percent share is $600. The payment standard for your unit size is $1,000. The landlord charges $1,200. The housing authority pays $1,000. You owe $200 — which is 10 percent of your income, not 30 percent. But if the landlord charges $1,500, you owe $500 out of pocket, which is 25 percent of your income.

This is why finding a unit at or below the payment standard matters. It is the only way to keep your out-of-pocket rent at or near 30 percent of your income.

How income limits and payment standards interact

When you first enter Section 8, your income must be at or below 50 percent of the area median income (AMI) for your area. Once you are in the program, you can stay even if your income rises above that threshold, but your rent contribution will increase as your income increases.

Payment standards are separate from income limits. A high payment standard does not mean you earn more; it means rent in that area is higher. A low payment standard means rent is lower, so your 30 percent contribution is lower even if your income is the same.

Some housing authorities use payment standard percentages — they set the payment standard at 90 percent or 110 percent of the fair market rent published by the U.S. Department of Housing and Urban Development (HUD). This gives you a sense of whether your area's payment standard is conservative or generous, but it does not change how your rent is calculated.

Frequently Asked Questions

What happens to my rent if my landlord raises the rent?

Your rent contribution stays the same unless your income changes. The landlord's increase only affects you if the new rent is still at or below the payment standard. If the new rent exceeds the payment standard, you pay the difference out of pocket. Many landlords do not raise rent on Section 8 tenants for this reason.

Can I pay less than 30 percent of my income if I find a cheap unit?

Yes. If your 30 percent share is $600 but the rent is $500, you pay $500. The housing authority pays the landlord the difference between your payment and the rent, up to the payment standard. You never pay more than the actual rent.

How often does the payment standard change?

Payment standards are usually updated once per year, often in the spring or fall. Your housing authority publishes the new standards on its website. Changes do not affect your current rent until your next annual recertification, unless you move to a new unit.

What if I have zero income?

If your adjusted income is zero or very low, you pay a minimum rent set by your housing authority, typically $25 to $75 per month. The housing authority pays the rest. This minimum ensures the landlord receives some payment from you.

Do I have to report income changes right away?

Yes. Most housing authorities require you to report significant income changes within 30 days. Failure to report can result in overpayment of your rent subsidy, which you may be asked to repay. Contact your housing authority when ready if your income changes.