HUD multifamily loan sizing under current mortgage criteria

A HUD mortgage is sized by several criteria, and the lowest applicable result controls. The published leverage ratio is one input to that process. For a multifamily owner seeking a large loan, the useful question is which criterion constrains this property, under this program and category, using accepted income, cost, and value.

Require a dated sizing worksheet that identifies the program, property category, requested amount, relevant loan history, accepted underwriting assumptions, and controlling criterion. A useful worksheet explains why the proposed mortgage stops at its stated amount and what would have to change to support a different result.

Use the correct denominator

Loan to value measures debt against accepted property value. Loan to cost measures debt against an accepted cost basis. Neither denominator necessarily equals the owner's spreadsheet total or its purchase-price expectations.

The MAP Guide describes most new construction/substantial rehabilitation sizing as cost-based, with specified statutory exceptions. For rehabilitation, accepted existing-property value is part of the calculation under the stated framework.^[1] Do not apply a refinance value ratio to an entire development budget merely because both results are called leverage.

Ask for a reconciliation from total capital uses to the accepted mortgageable basis. Show excluded amounts, accepted existing value, land treatment, transaction costs, reserves, and other items according to their actual program treatment. A lower eligible basis can require more equity even where the nominal percentage remains unchanged.

Also reconcile gross mortgage proceeds to usable funds. The sizing worksheet and sources-and-uses statement answer different questions: how much debt is allowed, and where that debt must go. A required payoff can absorb nearly all of an otherwise satisfactory refinance amount.

Apply current ordinary ratios, rather than older MAP figures

Mortgagee Letter 2025-03 revised ordinary market-rate Section 221(d)(4) and Section 223(f) ratios to 87% LTC/LTV and 1.15 debt-service coverage. Its table preserves the specified rent-assisted category and gives qualifying LIHTC properties with rent advantage 90% and 1.11. It preserves cash-out Criterion 10 and vacancy treatment.^[2]

Those categories require actual qualification. “Affordable,” “workforce,” or “tax credit” in a project description does not establish the applicable ratio. Ask the lender to document which restrictions, assistance, and rent comparison support the chosen category.

The newer middle-income policy is also program-specific. Mortgagee Letter 2026-01 establishes the qualifying Section 221(d)(4) framework, including 90% LTC, 1.11 coverage, and 7% vacancy, and supersedes the earlier middle-income letter. Qualification relies on its defined programs and restrictions, not a sponsor's marketing label.^[3]

An income restriction can change rents and the underwritten income as well as leverage. Compare both changes. Increasing a nominal cost ratio by several percentage points does not necessarily increase debt if the income test becomes controlling.

Translate coverage into proceeds carefully

Coverage is accepted annual net operating income divided by the applicable annual debt-service requirement. In a simplified calculation, dividing income by required coverage gives permitted annual service; dividing that result by an all-in payment constant gives supportable principal.

Define the constant clearly. Include the applicable insurance component when the calculation calls for it, and distinguish permanent amortization from construction interest. Do not add the same insurance expense twice, or divide income by a coupon when the actual test uses amortizing payments.

HUD's September 2025 final premium notice sets revised rates for covered eligible applications and explains collection differences between refinancing and construction executions.^[4] The correct premium is an input to the financing calculation, not an optional adjustment after proceeds have been promised.

Treat this simplified algebra as a diagnostic tool. The lender's actual underwriting incorporates accepted income, expense, vacancy, payments, and applicable program forms. An owner can use the simplified result to identify sensitivities without claiming it substitutes for HUD's review.

Test the large-loan category explicitly

HUD's 2026 indexing letter keeps the large-loan threshold at $130 million for applicable applications submitted or amended from January 1, 2026 before initial endorsement. It also updates geographic high-cost percentages and the substantial-rehabilitation base.^[5]

The large-loan framework in Mortgagee Letter 2023-14 replaces the applicable MAP section. For market-rate large Section 223(f) refinancings, its table states 1.30 coverage and 75% LTV without cash-out, or 70% with cash-out. Its other categories and new-construction rules differ.^[6]

Consider an illustrative market-rate refinance requesting $170 million, with $210 million of accepted value and $12 million of accepted annual income. Assume a 6% all-in annual debt-service constant. The ordinary 87% value test would produce $182.7 million, while the ordinary 1.15 coverage test would produce about $173.91 million. Those calculations cannot justify ignoring the applicable large-loan overlay.

Under the stated large-loan non-cash-out assumptions, 75% of value is $157.5 million and the 1.30 coverage test supports approximately $153.85 million. The coverage result controls among these inputs and is below the $170 million request. If the transaction instead falls within the large-loan cash-out category, 70% of value is $147 million, below that coverage result.

The example illustrates the consequence of identifying the category correctly. It does not establish that those amounts are approved: statutory limits, recognized refinancing costs, reserves, cash-out mechanics, and all other criteria still apply. Do not manipulate an example below a threshold and assume the applicable review rules vanish without lender/HUD confirmation.

Keep statutory limits and scope classifications separate

Per-unit statutory mortgage limits are another sizing criterion. The geographic high-cost framework adjusts those limits under its provisions; it does not replace income underwriting or authorize any desired amount.^[1][5]

The substantial-rehabilitation threshold serves a different purpose: classifying work. The 2026 base is $20,406 per dwelling unit, and the MAP calculation applies the relevant multiplier and unit count. Do not confuse that rehabilitation classification with a property's statutory mortgage limit.^[1][5]

Use separately labeled worksheets for the mortgage limit and rehabilitation assessment. Record the geography and effective date used in each. A change in the scope of work can alter the eligible execution, even if a preliminary loan-to-value calculation remains unchanged.

Identify the action that would change the controlling criterion

After identifying the binding constraint, test changes that actually affect it. More accepted net income or a different accepted payment structure can alter the coverage result. A larger owner's budget does not fix a coverage shortfall. An appraisal increase does not solve a recognized-cost cap by itself.

For each scenario, recalculate every criterion rather than only the previous constraint. Improving income may move control to value, cost, requested amount, or statutory limits. Record the additional equity and cash timing resulting from each accepted scenario.

Large-loan underwriting can also require enhanced reserves and aggregate principal financial capacity, with specified exceptions and case-by-case review. A ratio-supported mortgage does not establish that the sponsor satisfies those requirements.^[6]

The final sizing package should include both the criteria worksheet and a complete funding plan. Recheck current letters when submitting or amending the application and before publishing program-sensitive guidance. The owner should be able to explain the controlling number, its assumptions, the required nonloan funding, and which changes could realistically improve the financing result.