What Is Area Median Income (AMI)? A Housing Help Guide
AMI is the middle income for your area, set by HUD each year. See how it sets Section 8, public housing, LIHTC and HOME limits for your family size.
KPCB Staff · Oct 21, 2026
By KPCB StaffCombined Expertise In The Low Income Housing Space For 10 Years · How we write our guides

Public housing means you rent an apartment owned and run by your local housing authority. Section 8, officially the Housing Choice Voucher program, helps you pay rent on a private apartment you find yourself, and in many cases you can take the voucher with you when you move. In both programs you usually pay about 30% of your adjusted income in rent, and you apply through your local public housing agency (PHA) for free.
The biggest difference is where the help is attached. In public housing, the help comes with the unit, so if you move out you leave the help behind. With a voucher, the help goes with your household, and you choose the home.
| Public housing | Section 8 (Housing Choice Voucher) | |
|---|---|---|
| Who owns the home | Your local housing authority | A private landlord you choose |
| Where you can live | A unit the PHA offers you | Any eligible unit whose landlord agrees to take part and that passes the health and safety inspection |
| Income limit to qualify | Low income: up to 80% of area median income | Generally very low income: up to 50% of area median income |
| Who gets most openings | At least 40% of new admissions each year must be extremely low-income families | At least 75% of new admissions each year must be extremely low-income families |
| Your rent | Income-based rent (usually 30% of adjusted monthly income), or a flat rent you can choose once a year | Usually 30% of adjusted monthly income; at move-in it can be up to 40% if the unit costs more than the PHA's payment standard |
| Who gets paid | You pay rent to the PHA | You pay your share to the landlord, and the PHA pays the rest directly to the landlord |
| Moving | The help stays with the apartment | You can move with your voucher anywhere in the U.S. where a PHA runs a voucher program, with some limits |
| Where to apply | Your local PHA | Your local PHA |
Both programs use the same basic eligibility rules, the same rent formula, and the same federal background check rules. A PHA that runs both may keep one combined waiting list or separate lists, and you can be on both.
HUD's eligibility rules for public housing and vouchers look at three things.
For vouchers, HUD also says the head of household needs a valid Social Security number.
Public housing has one more limit. The PHA matches families to units by size, such as the number of bedrooms, so the unit sizes a PHA has can affect how soon you get an offer.
Meeting these rules only means you can apply. The housing authority decides who is eligible, and its written admission policies (for vouchers, this is called the Administrative Plan) explain its local rules. Our guide to Section 8 income eligibility goes into more detail, and the benefit finder can show you other programs to check.
You apply for both programs through your local public housing agency. HUD does not take applications itself.
Applying is always free. HUD's Office of Inspector General warns that housing authorities and government agencies "will never ask you to pay for admission to housing assistance programs or to join a waitlist." Fake waitlist ads on social media try to collect fees or your Social Security number. Confirm any opening by calling the PHA at the number on its official website, and report scams to the HUD OIG Hotline at 1-800-347-3735.
For a full walkthrough of the voucher side, see the steps to Section 8.
For public housing, HUD says the PHA collects the names of everyone in the household, your current address and phone number, your family situation, past landlord references, the income you expect over the next 12 months, and your employer and bank details. Some PHAs also visit your current home.
After it checks your information, the PHA notifies you in writing. If you are eligible, you go on the waiting list, or you get help right away if a unit or voucher is available.
Both programs start with the same federal formula, called the total tenant payment. It is the highest of:
For public housing and vouchers, a PHA can set a minimum rent of up to $50 a month. If you cannot pay it because of a hardship, such as losing your job, a death in the family, or facing eviction, the PHA must grant an exemption under its written policies.
Once a year, the PHA must let you choose between income-based rent and a flat rent. The flat rent is based on what the unit would rent for on the private market and must be at least 80% of HUD's Fair Market Rent for the area. If you pay your own utilities, the PHA lowers the flat rent by a utility allowance.
With a voucher, the PHA pays the landlord the difference between its payment standard and your share. HUD says your share is usually 30% of your adjusted monthly income. If you pick a unit that costs more than the payment standard, your share goes up, but when you first move in it cannot be more than 40% of your adjusted monthly income.
The same federal rules apply in both programs. The PHA must deny your household if any member:
The meth and lifetime registration bans are permanent. For other criminal history, the PHA decides using its own written policy and a "reasonable time" period it sets, so rules differ from one agency to the next.
If anyone in your household was evicted from federally assisted housing for drug-related criminal activity, the PHA must deny admission for three years from the eviction date. It may still admit you sooner if that person finished a supervised drug rehab program the PHA approves, or if the circumstances that led to the eviction no longer exist (the federal rule gives the example of the person having died or being in prison).
Other evictions, and money you owe a past landlord or PHA, are handled under each agency's own policy. Ask your PHA how it treats them, and whether paying off or setting up a payment plan on an old balance would help.
Before denying you because of a criminal record, the PHA must tell you, give you a copy of the record, and let you dispute whether it is accurate or relevant. It cannot charge you for the records check. If you are denied, the PHA must tell you why. You can ask for an informal hearing (public housing) or an informal review (vouchers). If someone in your household has changed, bring proof such as letters from a probation officer, a landlord, a counselor, or a rehab program.
Read more in what Section 8 looks for in a background check. For help with a denial, free legal aid offices are listed at LawHelp.org.
HUD says waiting times can be long. How long depends on your area, how many people applied, how many units or vouchers open up, and the PHA's preferences. A PHA may give preference to working families, people with disabilities, or people who live or work in its area. It must tell all applicants about its preferences and let them show they qualify. Public housing cannot require you to already live in the area, though it may give a preference to people who live or work there.
A few things improve your chances:
Yes. Federal rules say a PHA cannot refuse to list you, drop you, or lower your place on the voucher list because you applied for or got other housing help, including public housing. If the PHA keeps separate lists and the other one is open, it must offer to add you.
It depends on what you need. A voucher lets you pick your neighborhood and move with your help, but you have to find a landlord who will take it. Public housing has you rent directly from the PHA, and it accepts households with somewhat higher incomes (up to 80% of area median income).
No. The help stays with the public housing unit. Some PHAs allow transfers between their own units or programs under their written policies, so ask before you move out.
Usually, yes. If you lived in the PHA's area when you applied, you can use your new voucher anywhere in the U.S. If you did not, the PHA can make you lease in its own area for the first 12 months. See transferring a Section 8 voucher to another state.
No. Public housing is open to low-income families and single people of any age. Some buildings are set aside for elderly or disabled families, and some PHAs give these households a preference.
No. Housing authorities never charge to apply or to join a waiting list. If someone asks you to pay, it is a scam. Report it to the HUD OIG Hotline at 1-800-347-3735.

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