What Is Area Median Income (AMI)?

Area Median Income (AMI) is an annual statistical benchmark published by the Department of Housing and Urban Development (HUD) that calculates the midpoint of an area's income distribution, where 50 percent of households earn above the median figure and 50 percent below. It is the primary metric used to define housing affordability in the US.

AMI is:

An area-based (metro or county) measure
A household-size adjusted measure
Updated annually by HUD
Used to reflect local earning capacity, not national averages

AMI is not:

A measure of what households experience over time
A reflection of income volatility
A guarantee of affordability

Roughly about 20 million households (renters and owners combined) overall live at or below 30 percent of AMI in the United States. This income band is where the housing affordability crisis is most acute and where market-based housing production fails without structural subsidy.

When households are grouped by AMI bands, a consistent pattern emerges across the country:

A large share of households exist on less than 50% of AMI.
A growing number of households between 60–100% of AMI are cost-burdened.
Even households above AMI face instability in markets where prices fluctuate rapidly.

Learn The Lingo:

Lost or Stranded
Income or Benefit Cliff

A “lost” or “stranded” household in affordable housing refers to tenants stuck in an “income cliff” or a “benefit cliff.”

This is when affordable housing tenants find that a minor increase in wages or Social Security pushes their income over the restricted AMI limit for their unit. Consequently, they lose eligibility and are forced to pay market rent — or face eviction.

How is AMI currently used by housing providers?

In conventional affordable housing models, AMI is used to:

Lock units to specific income bands (e.g., 30%, 50%, 80% AMI)
Require income certification and recertification
Reset affordability rules at resale or re-rental
Enforce compliance through regulatory agreements

These models can unintentionally:

Create income or benefit cliffs
Penalize household income growth
Require repeated subsidies at transfer
Strand tenants without access as household needs change

Instead of being used as an informational measure to identify households that need help, AMI can become a punitive gatekeeper that ends up penalizing households that change.

Limited

Traditional AMI-locked models rely on static income bands, eligibility policing, and resale or re-rental restrictions that must be re-subsidized at transfer. These approaches are effective in specific contexts but often struggle to scale, adapt, or persist without ongoing public capital.

Short-Sighted

Most housing models are designed to serve one AMI band at a time. As a result, they fail to address the full income spectrum of real communities, and they often rely on deep subsidies for some households while leaving others deeply exposed to market volatility. These models work for no one and do real harm to the economy.

Separatist

Current models also stigmatize and segregate communities according to the “desirability” thresholds that have sustained segregated communities across race, class, health, and abilities for generations.

How does Vesi use AMI?

Vesi recognizes two realities simultaneously:

AMI-based subsidy is necessary to produce and preserve housing supply for lower-income households, particularly at the deepest affordability levels.
AMI alone is insufficient to ensure long-term neighborhood stability, adaptability, and reduced subsidy dependence.

For this reason, Vesi uses AMI for targeted financing and access, not as the defining feature of the housing market.

Vesi uses AMI to:

Understand household capacity
Design predictable use costs
Calibrate ownership participation within a permanently stewarded system

Vesi uses AMI to match a property’s value to a specific household using affordability, not market demand. We never use AMI as a lock-in mechanism so that the household is penalized for not remaining low-income. This means that Vesi’s affordable housing tenants cannot become lost or stranded in the system.

We understand that real household income is dynamic, and it needs to stay dynamic for families to flourish in today’s economy. Instead of tying affordability to who a household is at a moment in time, Vesi ties affordability to what a household can afford to carry across moments, and allows that relationship to change.

Vesi doesn’t ask, “What is this property worth on the open market?” Vesi asks, “What price allows a household making 50% below AMI to afford this home without being cost-burdened?”

By using AMI in this way, Vesi turns “affordable” from a discount into a precise valuation methodology that breaks the speculative feedback loop by anchoring price to wages.

AMI In Action: Trenton, New Jersey

Below is a composite approximation of how households in Trenton are distributed across income brackets, then translated into approximate AMI bands based on the most recent ACS household income categories and HUD AMI income limits for the Trenton-Princeton area.

Over half ( 58-63%) of Trenton’s households are estimated to be very low- to low-income, demonstrating a very strong need for deeply affordable housing and targeted support for the lowest brackets.

  
      AMI Band
      HUD Income Range (2-person)
      Approx. Trenton Income Ranges
      Estimated % of Households*
    
      ≤30% AMI
      ≤ ~$30,450
      Approx. ≤ $25,000
      ~28–32%
    
      30–50% AMI
      ~$30,450–$50,800
      ~$25k–$50k
      ~30–35%
    
      50–80% AMI
      ~$50,800–$80,500
      ~$50k–$75k
      ~18–25%
    
      80–100% AMI
      ~$80,500–$100,700
      ~$75k–$100k
      ~10–15%
    
      >100% AMI
      > ~$100,700
      > $100k
      ~10–15%

Data compiled and analyzed using Census Reporter. The ranges shown above are estimates derived by matching Census household categories to HUD AMI breakpoints.

  
    Annual Income For Different Income Brackets: Trenton, NJ

  
      Household Size
      30% AMI
      50% AMI
      60% AMI
      80% AMI
      100% AMI
      120% AMI
      150% AMI
    

  
      1
      $26,650
      $44,450
      $53,340
      $71,050
      $88,800
      $106,600
      $133,200
    

      2
      $30,450
      $50,800
      $60,960
      $81,200
      $101,500
      $121,800
      $152,250
    

      3
      $34,250
      $57,150
      $68,580
      $91,350
      $114,200
      $137,000
      $171,300
    

      4
      $38,050
      $63,450
      $76,140
      $101,500
      $126,900
      $152,300
      $190,400
    


  
  

  
    Maximum Affordable Housing Cost (30% of Total Household Income)

  
      Household Size
      30% AMI
      50% AMI
      60% AMI
      80% AMI
      100% AMI
      120% AMI
      150% AMI
    

  
      1
      $7,995
      $13,335
      $16,002
      $21,315
      $26,640
      $31,980
      $39,960
    

      2
      $9,135
      $15,240
      $18,288
      $24,360
      $30,450
      $36,540
      $45,675
    

      3
      $10,275
      $17,145
      $20,574
      $27,405
      $34,260
      $41,100
      $51,390
    

      4
      $11,415
      $19,035
      $22,842
      $30,450
      $38,070
      $45,690
      $57,120
    


  
  

In Trenton, a four-person household at 30 percent of AMI can afford no more than about $950 per month in total housing costs, while a comparable household at 150 percent of AMI can afford nearly $4,800—illustrating the scale of internal cross-subsidy required in a mixed-income portfolio.

How does Vesi use AMI-restricted funding?

Vesi goes beyond traditional housing models to preserve affordability beyond the compliance period through trust stewardship in perpetuity.

Vesi allocates all AMI-restricted funding to specific housing assets within its Perpetual Purpose Trust (PPT) to meet documented housing supply needs.

When Vesi accepts AMI-restricted public or philanthropic funding, it is:

Allocated to specific assets or units within Vesi’s PPT
Governed by the income, rent, or price restrictions required by the funding source
Used to meet documented housing supply needs at specific affordability levels (e.g., ≤30%, 50%, or 60% AMI)

These AMI-restricted assets are permanently non-market by virtue of being held in the PPT, comply fully with program requirements, and are clearly delineated within the portfolio.

This ensures public funds are used exactly as intended, with full compliance and transparency, in perpetuity.

By allocating AMI-restricted funding within a broader portfolio that included market-rate assets, Vesi can produce deeply affordable housing where it is most needed.

Vesi engages in conventional capital markets to remain financially resilient and reduce pressure on PPT-held assets to perform financially beyond their stewardship purpose.

Are Housing Crises Inevitable?

The U.S. does not have a physical shortage of housing units. There are actually millions of vacant homes nationwide.

However, there is a severe deficit of affordable and appropriately located homes. Vesi increases affordability of homes in the areas that need them most.