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Understanding Gross Rent Floor Elections

Introduction


The gross rent floor is one of LIHTC's most important protections for property owners—yet it's also one of the most misunderstood provisions in the program.


In simple terms, the gross rent floor locks in a minimum level for your maximum allowable rents, protecting you from future income limit decreases that could otherwise squeeze your revenue. But the protection only works if you make the right election at the right time.


Let's break it down.


What Is the Gross Rent Floor?


The gross rent floor sets the minimum amount that can be used as the maximum allowable gross rent for LIHTC units. It prevents your maximum rents from dropping if HUD publishes lower income limits in future years.


Without a gross rent floor: If area median income (AMI) decreases, your maximum allowable rent decreases with it—even if your operating costs haven't changed.


With a gross rent floor: Your maximum allowable rent can never go below the floor amount, regardless of future AMI changes.


Think of it as a safety net for your rental income.

How the Gross Rent Floor Works


Maximum LIHTC rents are calculated as a percentage of the applicable income limit:


  • 50% units: Rent = 30% of 50% of AMI (adjusted for unit size)

  • 60% units: Rent = 30% of 60% of AMI (adjusted for unit size)

  • Income Averaging units: Rent = 30% of the designated percentage (20%-80%) of AMI (adjusted for unit size)


If AMI goes up, your maximum rents go up. If AMI goes down, your maximum rents go down—unless your gross rent floor is higher.


Example:


  • Your 60% unit gross rent floor was set at $900/month

  • Next year, AMI decreases, and the new calculated maximum rent is $875/month

  • Your maximum allowable rent stays at $900/month because of the gross rent floor

The Three Election Options


Property owners can elect one of three dates to establish the gross rent floor:


Option 1: Placed-in-Service Date (Default)

If you don't make an affirmative election, the gross rent floor defaults to the rents calculated using the income limits in effect on the placed-in-service date of the building.


  • This is the automatic option

  • No action required

Works well if income limits were favorable when the building was placed in service


Option 2: HFA Determination Date

You can elect to use the income limits in effect on the date the Housing Finance Agency (HFA) initially allocates credits to the project.


  • Must be elected—it's not automatic

  • Often used when income limits were higher at allocation than at placed-in-service

  • Check with your state HFA for specific procedures


Option 3: Any Date Between Allocation and Placed-in-Service

You can pick any date between the HFA allocation and the placed-in-service date.


  • Gives you maximum flexibility

  • Useful if income limits peaked at some point during construction

  • Must be affirmatively elected

When to Make the Election


Timing is critical. The election must typically be made on or before the placed-in-service date. After that, you're locked into the default (Option 1).


Best Practice:


  • Monitor income limits throughout the construction/rehab period

  • Compare the income limits (and resulting rents) at allocation, during construction, and at placed-in-service

  • Make the election for the date that produces the highest rents

  • Document the election in your project files


Gross Rent Floor vs. Maximum Allowable Rent


It's important to understand that the gross rent floor is a floor, not a cap.


  • If current income limits produce rents above the floor → use the higher current rents

  • If current income limits produce rents below the floor → use the floor amount

  • The floor only comes into play when income limits decrease


The gross rent floor doesn't limit your ability to charge higher rents when income limits increase. It only prevents your maximum from dropping below the floor.


What's Included in "Gross Rent"?


For LIHTC purposes, gross rent includes:


  • Tenant-paid rent (the amount the tenant actually pays)

  • Utility allowance (whether or not the tenant actually pays utilities)


Gross Rent = Tenant Rent + Utility Allowance


When comparing to the gross rent floor, use the full gross rent amount, not just the tenant-paid portion.


Important: If utility allowances increase, your tenant-paid rent must decrease to stay within the maximum gross rent. The gross rent floor doesn't override the utility allowance requirement.


Common Mistakes


❌ Not making an election at all. You default to placed-in-service date, which may not be the most favorable.


❌ Making the election after placed-in-service Too late—you've missed the window.


❌ Confusing gross rent floor with actual rent charged. The floor sets the minimum for maximum allowable rent, not the actual rent you must charge.


❌ Forgetting utility allowances. The gross rent floor applies to gross rent (rent + utility allowance), not just tenant rent.


❌ Not documenting the election. If you made an election, keep a copy in your compliance files. Auditors will want to see it.


Income Averaging and the Gross Rent Floor


The Income Averaging set-aside, introduced by the Consolidated Appropriations Act of 2018, allows properties to designate units at any AMI percentage between 20% and 80% in 10% increments, as long as the average across all designated units doesn't exceed 60% AMI.


This adds significant complexity to gross rent floor management because each unit's gross rent floor is tied to its specific AMI designation.


How It Works with Income Averaging


  • A unit designated at 30% AMI has its gross rent floor calculated at 30% of AMI

  • A unit designated at 70% AMI has its gross rent floor calculated at 70% of AMI

  • A unit designated at 80% AMI has its gross rent floor calculated at 80% of AMI


Each designation gets its own floor. You don't calculate one floor for the whole property—you calculate a floor for each AMI tier you've designated.


The Designation Is Locked

Once a unit's income averaging designation is established and the gross rent floor is set, the designation for that unit is fixed for the gross rent floor calculation. You cannot retroactively change a unit's designation to get a higher floor.


Example:


  • You designate Unit 101 at 50% AMI at placed-in-service

  • The gross rent floor for Unit 101 is locked at the 50% AMI rent on the election date

  • Even if you later redesignate Unit 101 to 70% AMI, the gross rent floor remains based on the original 50% designation

  • However, the unit's current maximum rent would be calculated at 70% AMI—so the floor only matters if 70% AMI rents drop below the original 50% floor (unlikely, but possible in volatile markets)


Redesignation Considerations


Income averaging allows some flexibility to redesignate units, but be careful:


  • Redesignating up (e.g., 50% to 70%): The gross rent floor stays at the original lower designation. The new higher maximum rent applies going forward.

  • Redesignating down (e.g., 70% to 50%): The gross rent floor from the original 70% designation may actually be higher than the new 50% maximum rent—creating a situation where the floor is irrelevant because you've voluntarily lowered the cap.

  • The average must still equal 60% or less after any redesignation.


Practical Tips for Income Averaging Properties


  • Track each unit's designation AND its gross rent floor separately — a spreadsheet or compliance software that tracks both is essential

  • Document the original designation date and AMI percentage for every unit — this is your gross rent floor baseline

  • When redesignating units, recalculate the impact on rent floors — understand whether the floor from the original designation still provides protection

  • Keep records of income limits for your election date at EVERY AMI tier you use — not just 60%

  • Coordinate with your syndicator before redesignating — changes affect projected revenue and the overall 60% average test


Common Income Averaging Mistakes with Gross Rent Floors


❌ Calculating one gross rent floor for the whole property at 60%. Each unit's floor is based on its individual AMI designation, not the property average.


❌ Assuming redesignation changes the gross rent floor. The floor is locked at the original designation on the election date.


❌ Not tracking floors by unit and designation tier. You need unit-level tracking, not just property-level calculations.


❌ Forgetting that the 60% average test must be maintained. Redesignations that change the average above 60% will cause noncompliance regardless of rent floors.


Practical Tips


  1. Calculate rents at multiple dates — Compare income limits at allocation, mid-construction, and placed-in-service to find the highest rents

  2. Keep records — Maintain copies of income limit charts for your election date

  3. Coordinate with your syndicator — They should be involved in the election decision

  4. Update your rent calculations annually — Compare current maximums against your floor each year

  5. Train your staff — Site managers need to understand that the gross rent floor may allow higher rents than current income limits suggest

  6. For income averaging properties — Track gross rent floors at EACH AMI designation tier, not just the 60% average

The Bottom Line


The gross rent floor is a valuable protection that prevents your LIHTC rents from declining when income limits drop. For traditional 60% set-asides, it's straightforward. For income averaging properties, it requires unit-level tracking of designations and floors at each AMI tier. But the principle is the same: proactive management—choosing the right election date, documenting your decision, and comparing against the floor each year.


Don't leave money on the table by ignoring this provision.


Need help with gross rent floor elections or LIHTC rent calculations? The TCC Firm provides LIHTC compliance consulting and training. Contact us for assistance.

 
 
 

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