The public housing authority updates its utility allowance schedule. The two-bedroom allowance goes from $94 to $121. Nothing about your building changed. Nobody moved. No rent limit moved. And the maximum rent you can charge on every two-bedroom unit in the property just fell by $27 a month.

That is the utility allowance, and it is the only number in affordable housing where an increase takes money off you, dollar for dollar.

Twenty-four two-bedroom units, $27 a month, is $8,640 a year. It arrives with no notice event, no tenant conversation, and nothing in the ledger to flag it. Somebody has to go and look.

The Calculation Nobody Runs

Before the mechanics, the reason to care. For each property, take the current utility allowance by bedroom size. Multiply the difference between that allowance and a plausible building-specific alternative by the number of affected units, by twelve.

That is a simplified indication of the rent impact of the utility allowance, and the actual maximum tenant-paid rent depends on the applicable rent limit and the other gross rent rules.

The allowance is a given only under one of the subsections, and only if you never elect otherwise. Where §1.42-10(b)(4) applies, the allowance is a number with a method behind it, and different methods produce different numbers. Buildings covered by (b)(1) to (b)(3) follow the rules in those subsections instead.

An area-based schedule reflects the area. A building-specific estimate reflects your building. If yours is materially more efficient than the area average, those two numbers may diverge, and a lower supportable allowance can increase the maximum tenant-paid rent.

Whether a building-specific study is worth commissioning depends on the cost of the study, the size of the difference, and how many units are affected. The initial comparison is usually quick, but implementing an alternative method involves additional regulatory and procedural steps. Almost nobody makes that comparison, because the allowance arrives in a compliance workflow rather than an asset management one.

That is a revenue question wearing compliance clothing. The rest of this post is the mechanics you need to answer it properly.

Why An Increase Costs You

The mechanism is in 26 CFR 1.42-10(a), and it is short. If the cost of any utility for a residential rental unit is paid directly by the tenant, and not by or through the owner, the gross rent for that unit includes the applicable utility allowance.

Gross rent is what the rent restriction applies to. The rent limit is based on 30 percent of the applicable imputed income limitation for the unit, with the applicable income limits and unit characteristics determining that calculation.

So the arithmetic is forced. In simplified form:

Maximum tenant-paid rent = rent limit − utility allowance − other amounts included in gross rent

That is a simplified calculation, and the gross rent rules contain further inclusions and exclusions. But the direction holds: the rent limit does not move when the allowance moves. The allowance simply consumes more of it. Every dollar the allowance rises is a dollar off your permitted rent.

And the direction of error matters in only one direction. An allowance set too high costs you rent you could have charged. An allowance set too low means the tenant's actual housing cost may exceed the gross rent limit, which is a compliance problem rather than a revenue one. Those are not symmetrical outcomes, which is why the number deserves attention rather than acceptance.

Three Points On What Counts

The regulation is specific about which costs enter the calculation, and the result is narrower than people assume in one respect and broader in another.

Telephone, cable television and internet are excluded. The gross rent inclusion applies to utilities other than those three. A property marketing "utilities included" that bundles broadband is not, for this purpose, providing a utility that affects the allowance calculation.

Submetering counts as tenant-paid. Where the cost of a utility is paid under an actual-consumption submetering arrangement within the meaning of the regulation, that cost is treated as being paid directly by the tenant and not by or through the owner. The regulation contains specific requirements for how submetering arrangements are treated, so confirm the details for your arrangement.

That second point has a consequence people miss. Installing submeters does not move a cost off the utility allowance calculation. It moves it on. If you are considering submetering as a way to recover utility cost, model the allowance effect before the capital decision, not after.

And the section applies for the purpose of determining gross rent for rent-restricted units under section 42.

The 90-Day Rule Is Not A Grace Period

This is the part most often misread.

Where the applicable utility allowance changes as part of the annual update, the new allowance must be used to compute gross rents due 90 days after the change.

The correct action is to have the new allowance reflected in gross rent due 90 days after the change takes effect. Not earlier because it is convenient, and not later because nobody noticed.

There is a disclosure obligation attached. For several of the methods, the owner must submit copies of the utility estimates to the agency with jurisdiction over the building and make the estimates available to all tenants in the building at the beginning of the 90-day period, before the allowances can be used in determining gross rent. The agency may require additional information from the owner during that period.

So the 90 days is a notice window with obligations inside it, and it runs from the effective date of the change rather than from the day you noticed.

Which Rule Applies To Your Building

Before choosing a method, establish which subsection you are in. §1.42-10(b) sets out different rules depending on the building and the tenancy.

• Buildings assisted by the Rural Housing Service, and buildings otherwise regulated by HUD, have their own applicable allowance rules under (b)(1) and (b)(2).

• Units occupied by tenants receiving Section 8 rental assistance are addressed separately under (b)(3), which applies the applicable Section 8 utility allowance for that tenancy rather than the (b)(4) method.

• Everything else falls under (b)(4), where the PHA utility allowance for the Section 8 Existing Housing Program applies unless the owner chooses one of the alternative methods.

That structure matters because an operator with a mixed portfolio may be in more than one subsection, sometimes within the same building. The method choice below is a (b)(4) question, not a universal one.

The Method Is A Choice, And It Has Consequences

Where (b)(4) applies, the regulation permits several methods, and they do not produce the same number.

The PHA utility allowance schedule applies unless the owner elects an alternative. It is an area-based allowance rather than an estimate prepared specifically for your building.

A utility company estimate, an agency estimate, the HUD Utility Schedule Model, and an energy consumption model are the alternatives. Each has its own procedural requirements.

Three practical points before choosing.

1. The owner pays for several methods:
   The regulation places the cost on the building owner for an agency estimate, the HUD Utility Schedule Model and an energy consumption model. For a local utility company estimate, the cost is generally borne by the party that initiates the estimate unless the parties agree otherwise.

2. The energy consumption model has conditions:
   The qualified professional and the building owner must not be related within the meaning of the relevant Code sections. If the professional is not a properly licensed engineer, the owner must obtain approval from the agency. And regardless of the professional, the agency may approve or disapprove the model or require information before permitting its use.

3. Rates have an age limit:
   Utility rates used for the energy consumption model must be no older than the rates in place 60 days prior to the beginning of the 90-day period.

What The Annual Review Actually Requires

The obligation is per building and generally annual. The owner must review the basis for the utility allowance at least once during each calendar year, subject to the first-year occupancy rule in §1.42-10(c)(1).

For a new building, the review does not have to occur until the building has achieved 90 percent occupancy for 90 consecutive days or the end of the first year of the credit period, whichever is earlier.

Which sounds simple and produces three failure modes at portfolio scale.

1. Nobody owns the date:
   The PHA publishes on its own schedule, the agency may have its own requirements, and the review is an owner obligation regardless. An allowance that changed in March and was implemented in September is wrong in both directions for six months.

2. The change is not reflected in the rent roll:
   A new allowance changes the maximum permitted rent on every affected unit. If the rent roll carries the old maximum, the property may be over the limit on units where the rent sits close to it.

3. And the method is not documented:
   Which method was used, for which building, in which year, with what supporting estimates, is exactly what a file audit asks for. Reconstructing it later from an email chain is the version nobody wants.

At portfolio scale, the utility allowance is not one number. It is one per bedroom size per building per year, each with an effective date, an implementation date, a method and a supporting document. Holding those against the building rather than in a spreadsheet somebody maintains is the difference between an annual task and an annual scramble.

Where The Revenue Actually Goes

Back to the calculation at the top, and why it so rarely happens.

The allowance arrives as a schedule from a third party. It lands in a compliance workflow. Somebody applies it, files it, and moves on. Nothing in that sequence asks whether the number is the right one for this building, because nothing in that sequence is looking at revenue.

And the ledger does not help. A schedule change alters the maximum permitted rent on every affected unit, but the charged rent sits somewhere else and nothing connects the two. If the allowance and the rent limit are not held in the same place as the actual charged rent, that gap is where the exposure sits both the revenue you did not take and the rent that is now above the limit.

Run the comparison once per property per year. Complying with the rules is not optional. Testing whether an alternative method is available and worthwhile is, and it is the part that might pay for itself.

FAQ

1. What is a LIHTC utility allowance?
An estimate of tenant-paid utility costs that is included in gross rent for rent-restricted units under 26 CFR 1.42-10, where the utility is paid directly by the tenant rather than by or through the owner.

2. Does a higher utility allowance reduce the rent I can charge?
Yes. Gross rent includes the utility allowance, and gross rent is subject to the applicable rent restriction. A higher allowance reduces the maximum tenant-paid rent, dollar for dollar.

3. Which utilities are excluded?
Telephone, cable television and internet.

4. Does submetering count as tenant-paid?
Where the cost is paid under an actual-consumption submetering arrangement within the meaning of the regulation, it is treated as paid directly by the tenant and not by or through the owner. Specific requirements apply, so confirm the details for your arrangement.

5. When do I implement a new utility allowance?
Where the allowance changes as part of the annual update, the new allowance must be used to compute gross rents due 90 days after the change takes effect.

Sources: 26 CFR 1.42-10, Utility allowances, including the gross rent inclusion at (a), the applicable allowance rules at (b)(1) to (b)(4), the methods and cost allocation at (b)(4)(ii), and the review and 90-day provisions at (c); Cornell Legal Information Institute text of 26 CFR 1.42-10; cited as an example of state agency implementation. Figures used above are illustrative. State housing finance agency policy under the applicable Qualified Allocation Plan may impose additional or more specific requirements. This article describes general concepts and is not accounting, tax or legal advice. Confirm your position with the agency that has jurisdiction over the building and with a qualified compliance professional.