How Section 8 Rent Is Calculated: The 30% Rule, Step by Step
Your rent letter says you owe $412 a month, and you have no idea where that number came from. A friend with a similar income pays less. You want to check the math yourself before you sign anything.
Section 8 rent is calculated with a federal formula. Your share, called the total tenant payment, is usually 30% of your adjusted monthly income. “Adjusted” means income after certain deductions. Examples are a deduction for each child, or for medical costs if you’re elderly or disabled. If your rent is above the payment standard, you pay that extra too.
This guide walks through the formula step by step, with a worked example you can copy.
How is Section 8 rent calculated?
Under 24 CFR 5.628, your total tenant payment is the highest of four amounts. These are 30% of adjusted monthly income, 10% of gross monthly income, a welfare rent, or a minimum rent. For most families, the 30% figure is the highest. You also pay any amount above the payment standard.
| Step | What happens |
|---|---|
| 1. Add up yearly income | All household income before taxes, minus income that doesn’t count |
| 2. Subtract deductions | Dependents, elderly or disabled family, some medical and child care costs |
| 3. Divide by 12 | That’s your adjusted monthly income |
| 4. Take 30% | This is usually your total tenant payment |
| 5. Compare with 10% of gross monthly income and minimum rent | The highest one is your share |
| 6. Add any rent above the payment standard | That’s your final family share |
Takeaway: start with adjusted income, not your full paycheck.
What deductions lower my Section 8 rent?
Federal rules give every family certain deductions before the 30% is applied. Each dependent gets one. Elderly and disabled families get another, and they can also deduct high medical costs. Families who pay for child care so an adult can work or go to school can deduct that too. Your agency verifies each one.
| Deduction | Amount (agencies using HOTMA rules, January 1, 2026) | Rule |
|---|---|---|
| Each dependent | $500 per year | 24 CFR 5.611(a)(1) |
| Elderly or disabled family | $550 per year | 24 CFR 5.611(a)(2) |
| Medical and attendant care (elderly or disabled families) | Costs above 10% of annual income | 24 CFR 5.611(a)(3) |
| Child care so an adult can work or study | Reasonable costs | 24 CFR 5.611(a)(4) |
Source: 24 CFR 5.611 and HUD’s 2026 inflation-adjusted values. These amounts apply when your agency follows the newer HOTMA income rules. Ask your agency which amounts it uses.
A “dependent” generally means a household member under 18, a person with a disability, or a full-time student. It doesn’t include the head of household, spouse, or co-head.
Takeaway: tell your agency about every child, disability, and child care bill.
Can you show me a worked example?
Here’s a simple example with made-up numbers for a family of three: one parent and two children. The parent earns $18,000 a year. After two dependent deductions, adjusted income is $17,000. Thirty percent of the monthly amount is about $425. That’s higher than 10% of gross income, so it’s the family’s share.
| Step | Amount |
|---|---|
| Yearly income | $18,000 |
| Dependent deductions (2 x $500) | -$1,000 |
| Adjusted yearly income | $17,000 |
| Adjusted monthly income ($17,000 / 12) | $1,417 |
| 30% of adjusted monthly income | $425 |
| 10% of gross monthly income ($1,500 x 10%) | $150 |
| Minimum rent (if your agency has one) | Up to $50 |
| Total tenant payment (highest amount) | $425 |
If the unit’s gross rent is at or below the payment standard, this family’s total share is $425 a month. If the gross rent is $100 above the payment standard, their share is $525. Our payment standard guide explains that part.
Takeaway: you can check your own rent with this table and your income papers.
How do utilities affect my Section 8 rent?
If you pay some utilities yourself, your agency gives you a utility allowance. It’s added to the rent to get the gross rent. Your share of the rent to the owner is your total tenant payment minus that allowance. If the allowance is bigger than your total tenant payment, the agency may pay you the difference.
| Example | Amount |
|---|---|
| Total tenant payment | $425 |
| Utility allowance for tenant-paid utilities | $125 |
| What you pay the landlord | $300 |
| What you spend on your own utility bills | Your actual bills |
Is your total tenant payment lower than the utility allowance? Then the agency pays the difference as a utility reimbursement (24 CFR 982.514(b)).
Takeaway: a utility allowance lowers the rent you pay the landlord, not your utility bills.
What is the Section 8 minimum rent?
Agencies may set a minimum rent of up to $50 a month under 24 CFR 5.630. If your income is extremely low, your share may be this minimum. But agencies must grant a hardship exemption in certain cases. Examples are losing income, waiting for benefits, or facing eviction over unpaid rent. Ask about it in writing.
Hardship situations listed in 24 CFR 5.630 include:
- You’re waiting for a decision on government benefits.
- You’d be evicted because you can’t pay the minimum rent.
- Your income dropped because of a change in circumstances, such as a job loss.
- A death in the family.
Takeaway: if you truly can’t pay the minimum rent, ask for a hardship exemption.
Why did my Section 8 rent change?
Your rent share changes when your income, household, deductions, utility allowance, or the unit’s rent changes. A change in the payment standard can also matter. If your rent went up and you don’t know why, ask your agency for a written breakdown. You can ask for an informal hearing if you think the math is wrong.
| What changed | Likely effect |
|---|---|
| Your income went up | Your share goes up |
| A child was born or a dependent joined | Your share often goes down |
| You lost a job | Your share may go down after an interim review |
| Your landlord raised the rent above the payment standard | You pay the extra |
| The utility allowance changed | What you pay the landlord changes |
Under 24 CFR 982.555(a)(1)(i), you can ask for a hearing on how your income and assistance were figured. Our Section 8 recertification guide explains reviews and reporting.
Takeaway: ask for the breakdown in writing, then check it line by line.
Section 8 rent calculation myths vs facts
Reddit and Facebook threads about Section 8 rent often skip deductions or confuse gross and adjusted income. Some say you always pay exactly 30% of your paycheck. Others say Section 8 rent can never go up. We checked these claims against federal rules. Use this table before you question your rent letter.
| What people say online | What the rules say |
|---|---|
| “You pay exactly 30% of your paycheck.” | It’s 30% of adjusted income, after deductions. |
| “Section 8 pays the whole rent.” | You pay your total tenant payment, and the agency pays the rest. |
| “Your rent can never go up.” | It changes with income, household, and rent changes. |
| “Everyone pays at least $50.” | Only if your agency sets a minimum rent, and hardship exemptions exist. |
| “Medical bills don’t matter.” | Elderly and disabled families can deduct costs above 10% of income. |
| “You can’t challenge the math.” | You can ask for an informal hearing on the calculation. |
Takeaway: deductions are where many rent mistakes hide.
Frequently asked questions
How much rent do you pay on Section 8?
Most families pay about 30% of their adjusted monthly income, called the total tenant payment. It’s the highest of 30% of adjusted income, 10% of gross income, a welfare rent, or a minimum rent. You also pay any rent above the payment standard.
Is Section 8 rent based on gross or net income?
It starts with gross income, before taxes. Then certain deductions are subtracted to get adjusted income. Your share is usually 30% of adjusted monthly income. Taxes and other paycheck withholdings aren’t subtracted.
What is the Section 8 dependent deduction for 2026?
For agencies using the newer HOTMA rules, it’s $500 per dependent per year, effective January 1, 2026. The elderly or disabled family deduction is $550. Ask your agency which amounts it uses, because some agencies were still moving to the new rules.
Can I deduct medical expenses from my Section 8 income?
Yes, if your household is elderly or disabled. Unreimbursed medical costs above 10% of annual income can be deducted. Families who had the deduction before 2024 may get a lower threshold that phases up. Keep receipts and give them to your agency.
What happens if my income is zero?
Your share may be your agency’s minimum rent, up to $50, or $0 if your agency has no minimum. You may also qualify for a hardship exemption. Your agency may ask you to fill out a zero-income form and may check your status regularly.
Who decides how much rent I pay?
Your housing authority calculates it using federal rules. It sends you a notice of your share and the agency’s payment. If you think it’s wrong, ask for a written breakdown and request an informal hearing.
Your next step
Find your latest rent notice and income papers. Use the worked example above to check your share step by step. If something doesn’t match, ask your agency for a breakdown in writing. Browse more rent and money guides or all our guides.
This guide gives general information, not legal or financial advice. Rules vary by housing authority. Read how we check our facts, or report an error. Last reviewed: October 14, 2026.
Sources: 24 CFR 5.628, Total tenant payment (eCFR) | 24 CFR 5.611, Adjusted income (eCFR) | HUD 2026 inflation-adjusted values (via Arkansas Development Finance Authority) | Also cited: 24 CFR 5.630, 982.514, 982.555.
