The “Income Rule” Many Homebuyers Don’t Know About
Before a lender or housing agency can offer down payment assistance or other homebuyer benefits, they first check whether your income falls within a certain range. That range is based on something called Area Median Income, or AMI.
If you’ve never heard of AMI before, you’re not alone. Many buyers first see the term when they start researching programs or when a lender mentions that a program is available only to households earning a certain percentage of AMI.
Understanding what AMI means and how it applies to your household can help you answer a key question early in the homebuying process:
Do I qualify for help buying a home?
What Is Area Median Income (AMI)?
Area Median Income, often shortened to AMI, is the income level that sits right in the middle of all household incomes in a specific area.
It is calculated each year by the U.S. Department of Housing and Urban Development (HUD).
If every household in your area were lined up from lowest income to highest income, AMI would be the income in the middle of that list. Half of households earn more than that amount. Half earn less.
Because housing costs vary widely across the country, AMI is calculated for each metropolitan area or county. A household income that qualifies for assistance in one region might be too high in another place with lower housing costs.
Household size also matters. A family of four needs more income to cover everyday expenses than a single-person household, so income limits increase as household size grows.
What Does “80% of AMI” Actually Mean?
Many first-time homebuyer programs serve households earning up to 80% of the Area Median Income. That simply means your income is 80% of the typical income in your area.
For example, imagine a metro area where the AMI for a four-person household is $100,000.
Eighty percent of that amount would be $80,000.
In that community, a family earning $80,000 or less might qualify for certain housing assistance programs.
The reason many programs use the 80% mark is because households in that range are often considered low-to-moderate income, sometimes shortened to LMI. That term may sound technical, but it includes many households that would consider themselves solidly middle class.

