How Section 8 Calculates Your Rent Payment

What you actually pay under Section 8

Under Section 8, you pay a percentage of your household income toward rent, and the program pays your landlord the rest. The exact percentage depends on your local Public Housing Authority (PHA), but it is typically 30 percent of your adjusted gross monthly income. If your income is very low, some PHAs set a minimum rent you pay anyway — often $50 to $100 per month — so the program does not cover everything.

The rent the landlord receives is capped at the Fair Market Rent (FMR) for your area. This is a dollar amount set by the U.S. Department of Housing and Urban Development (HUD) each year based on what similar units rent for in your county or metro area. If your landlord wants to charge more than the FMR, you pay the difference out of pocket, or the landlord has to lower the rent to participate in the program.

Your share changes when your income changes. If you get a raise, your payment goes up. If you lose hours at work, your payment goes down. The PHA recalculates your rent at your annual recertification, and sometimes in between if you report a major income change.

Key Takeaways

• You pay roughly 30 percent of your adjusted gross income as rent; Section 8 pays the landlord the rest up to the Fair Market Rent limit for your area.
• Your local PHA sets the exact percentage and may require a minimum rent even if your income is very low.
• Fair Market Rent is set by HUD each year and varies by county; your landlord cannot charge more than this amount and still receive the Section 8 payment.
• Your rent payment recalculates every year at recertification, and you should report major income changes between recertifications so your payment stays accurate.
• Deductions for childcare, medical expenses, and disability-related costs can lower your adjusted income and reduce what you pay.

How the PHA calculates your adjusted income

The PHA does not use your gross income straight from your pay stub. They start with gross income and then subtract allowed deductions. These deductions can meaningfully lower the amount you pay.

Standard deductions include a dependent deduction (usually $480 per dependent per year), an elderly or disabled household member deduction, and a medical expense deduction for household members over 62. If you pay for childcare so you can work, that cost is deductible. If you have a disability-related expense — like a service animal, mobility equipment, or home modifications — that may be deductible too. Some PHAs also deduct a portion of utility costs if you pay them separately from rent.

You have to document these deductions. Bring pay stubs, childcare invoices, medical bills, or receipts for disability-related purchases to your recertification appointment. The PHA will not assume you have these expenses; you have to prove them.

The difference between gross income and adjusted income

Gross income is what you earn before taxes. Adjusted income is what remains after the PHA subtracts deductions. Your rent payment is based on adjusted income, not gross income, so understanding the difference matters.

For example: You earn $2,000 gross per month. You pay $400 per month for childcare and have one dependent. The PHA subtracts $400 for childcare and $40 for the dependent deduction (one-twelfth of $480). Your adjusted income is $1,560. At 30 percent, you pay $468 per month. Without those deductions, you would pay $600. Deductions saved you $132 per month.

Not all income counts toward rent either. Certain benefits — like Supplemental Security Income (SSI) or Temporary Assistance for Needy Families (TANF) — may be partially or fully excluded depending on your state and your PHA's rules. Ask your PHA which benefits they count and which they do not.

Fair Market Rent and what it means for your housing choice

Fair Market Rent is the amount HUD estimates a household can rent a modest, safe unit for in your area. It covers a one-bedroom, two-bedroom, three-bedroom, and larger units. Your voucher is issued for a specific bedroom size based on your household composition.

If you find a unit that rents for less than the FMR, you pay 30 percent of your adjusted income, and Section 8 pays the difference — you benefit from the lower rent. If the unit rents for exactly the FMR, Section 8 covers the full amount above your 30 percent. If the unit rents for more than the FMR, you pay the overage yourself, which defeats the purpose of the voucher.

FMR changes every year, usually in October. Your PHA will notify you if the FMR for your bedroom size increases or decreases. If it increases, your rent may go up at your next recertification. If it decreases, your rent may go down, though some PHAs phase in decreases gradually.

What happens to your rent when your income changes

Your rent is recalculated once per year at your recertification appointment. Between recertifications, your rent stays the same even if your circumstances change. However, if you experience a major income change — a job loss, a significant raise, or a change in household composition — you should report it to your PHA.

Some PHAs will recalculate your rent mid-year if you report a decrease in income. Others will wait until your annual recertification. A few PHAs recalculate for increases but not decreases. The rules vary, so ask your PHA what their policy is.

If you do not report a change and your income has actually increased, the PHA will discover it at recertification and may ask you to pay back the difference. If your income has decreased and you did not report it, you have been paying more than you should have, but you generally cannot recover the overpayment retroactively.

Minimum rent and hardship exemptions

Many PHAs set a minimum rent — the lowest amount you can be required to pay even if your calculated share is lower. Minimum rent is often $50 to $100 per month, though it varies by PHA. If your adjusted income is very low or zero, you still pay the minimum.

If the minimum rent creates a genuine hardship — you cannot afford both the minimum and basic living expenses — you can request a hardship exemption. This is not automatic. You have to ask your PHA in writing, explain the hardship, and provide documentation like medical bills, eviction notices, or proof that you are receiving emergency assistance. The PHA decides whether to grant the exemption, and the decision can be appealed.

A hardship exemption does not eliminate your rent; it typically lowers it to a percentage of your income even if that percentage is below the minimum. Exemptions are usually temporary and reviewed at recertification.

Frequently Asked Questions

Does my Section 8 rent payment change if I get a raise at work?

Your rent will not change immediately, but it will recalculate at your annual recertification. If you get a raise, your adjusted income goes up, and your rent payment goes up. Some PHAs allow you to report the raise mid-year and recalculate sooner, but most wait for the annual recertification. Check with your PHA about their policy.

What if the apartment I want costs more than the Fair Market Rent?

You can rent it, but you pay the difference between the FMR and the actual rent out of your own money. Section 8 will only pay up to the FMR. For example, if the FMR is $1,200 and the apartment costs $1,400, Section 8 pays up to $1,200, and you pay the extra $200 plus your 30 percent share. This usually makes the voucher pointless, so most people look for units at or below the FMR.

Can I deduct childcare costs from my income to lower my rent?

Yes, if you pay for childcare so you can work or attend school, that cost is deductible. You have to bring receipts or invoices to your recertification appointment. The PHA will subtract the childcare cost from your gross income before calculating your rent payment.

What if I disagree with how the PHA calculated my rent?

You have the right to request a hearing with your PHA. Ask for a copy of the calculation they used, review it for errors, and if you find a mistake, contact your PHA in writing. If they do not correct it, you can request a formal hearing. Bring documentation of your income, deductions, and household composition to the hearing.

Does my rent go down if the Fair Market Rent for my area decreases?

It may, but the timing depends on your PHA. Some PHAs lower rent immediately when FMR decreases. Others phase in the decrease over time or wait until your annual recertification. Your PHA will notify you of any FMR change and when it takes effect for your voucher.