Fannie Mae Multifamily Affordable Housing (MAH):
2026 lender & sponsor guide
Fannie Mae's flagship affordable-multifamily execution — LIHTC, Section 8 HAP, state HFA, and other ≤80% AMI restricted assets — with the credit, pricing, and mission-driven mechanics that drive deal-level decisions in 2026.
What is MAH?
Multifamily Affordable Housing (MAH) is Fannie Mae's DUS execution for properties with rent or income restrictions. Where Standard DUS finances market-rate apartments, MAH is purpose-built for the restricted-rent stack: LIHTC properties, Section 8 HAP-contracted assets, state HFA-financed transactions, and properties bound by recorded Land Use Restriction Agreements (LURAs) or other affordability covenants.
MAH gets more aggressive credit terms than Standard DUS — up to 90% LTV with a 1.15x DSCR, versus 80% / 1.25x for conventional. The structural reason: restricted-rent income streams are less volatile than market-rate cash flows, and the credit benefits from layered subsidy. The strategic reason: MAH counts as mission-driven, so DUS lenders are motivated to price aggressively to chase their FHFA mission attribution.
Eligible affordability structures
An MAH transaction can be built around any of the following, individually or in combination:
- LIHTC properties — both 4% bond-financed and 9% credit-financed; common at year-15 exits and resyndications
- Section 8 HAP contracts — project-based HAP, Mark-Up-To-Market renewals, Mark-To-Market restructured contracts
- State or local HFA financing — bond-financed or HFA-soft-loan transactions with affordability covenants
- Recorded LURAs or extended-use agreements — long-dated affordability commitments separate from tax credits
- Workforce housing in low- and moderate-income census tracts (qualifies as mission-driven and may be exempt from cap)
- Naturally-occurring affordable housing with voluntary recorded restrictions accepted by Fannie Mae
Loan terms & structure
Pricing
MAH loans are priced through Fannie Mae's tiered DSCR matrix, but the pricing curve sits below Standard DUS for equivalent leverage. MAH transactions also benefit from preferential MBS execution — MAH MBS attract a different investor base willing to pay up for affordable-housing exposure. In practice, sponsors see 10–30 basis points of pricing improvement vs. an equivalently-leveraged conventional loan.
Term & amortization
Standard 5-, 7-, 10-, 12-, 15-, 18-year terms are all available with up to 30-year amortization. Many LIHTC preservation transactions choose a 15-year term to align with extended-use compliance, though the underwriting horizon can be tightened or stretched based on HAP contract length.
Credit metrics
Up to 90% LTV at 1.15x DSCR for the most affordable transactions. Less-restricted MAH (e.g., 20% at 80% AMI threshold) lands closer to Standard DUS terms (80–85% LTV, 1.20x DSCR). Cash-out refinances on stabilized MAH are permitted and common.
MAH Express
MAH Express is the streamlined execution for smaller MAH transactions, typically $1M–$10M. It uses a simplified underwriting checklist, lighter third-party reporting, and an accelerated commitment process. Good candidates: small Section 8 properties, year-15 LIHTC refis on smaller assets, subsidized acquisitions in secondary markets, and bridge take-outs at conversion.
FHFA mission-driven attribution
Every MAH loan counts toward FHFA's requirement that at least 50% of each year's Fannie Mae multifamily volume support housing affordability. The mission-driven calculus drives DUS lender behavior: lenders short on attribution heading into Q4 will price MAH aggressively, while lenders well-positioned may be more selective. Sponsors with multiple lender quotes can sometimes use this seasonal pressure to their advantage.
A subset of MAH transactions — properties with very deep affordability or in distressed or low-income census tracts — are exempt from counting against the cap entirely, which gives Fannie Mae meaningful capacity to support these deals even in a tight cap year.
Documentation & due diligence
Beyond the Standard DUS due diligence package, MAH adds evidence of the affordability structure:
- Recorded LURA, extended-use agreement, or other restrictive covenant
- LIHTC partnership documents (8609s, partnership agreement, regulatory agreements)
- HAP contract — current contract, renewal history, rent reasonableness analysis
- State HFA loan documents and bond regulatory agreements
- Recent property compliance audit and tenant income certifications
- Property manager affordable-housing experience and compliance track record
Frequently asked questions
What is Fannie Mae's Multifamily Affordable Housing (MAH) program?
MAH is Fannie Mae's DUS execution for multifamily properties with rent or income restrictions. Eligible structures include Low-Income Housing Tax Credit (LIHTC) properties (both 4% and 9%), Section 8 Housing Assistance Payments (HAP) contracted properties, properties subject to state or local Housing Finance Agency (HFA) restrictions, properties with recorded Land Use Restriction Agreements (LURAs), and properties otherwise restricted at or below 80% area median income (AMI). MAH financing supports acquisition, refinance, and preservation of these affordable assets.
What income or rent restrictions qualify a property for MAH?
At a minimum, at least 20% of units must be restricted at or below 80% AMI for the loan to qualify as MAH. Many MAH transactions involve far deeper affordability — 100% of units at 60% AMI for LIHTC properties, or HAP-contracted units at varying AMI levels. The deeper the affordability, the more aggressive Fannie Mae's pricing and credit terms tend to be.
What's the maximum LTV and minimum DSCR for an MAH loan?
MAH supports up to 90% LTV with a 1.15x minimum DSCR — meaningfully more aggressive than Standard DUS (80% / 1.25x). The leverage and coverage flexibility reflects the lower volatility of restricted-rent income streams and the program's mission-driven status.
Does MAH count toward FHFA's 50% mission-driven requirement?
Yes. MAH is one of Fannie Mae's flagship mission-driven categories — every MAH loan counts toward the FHFA threshold that requires at least 50% of each year's multifamily volume to support affordability. In addition, certain MAH transactions (workforce housing in low-income tracts, very-low-income subset within an MAH property) may be exempt from counting against the volume cap entirely.
Can MAH finance LIHTC preservation deals?
Yes. MAH is one of the most active preservation vehicles for both 4% LIHTC bond deals and 9% credit deals approaching the end of their 15-year compliance period. Common use cases include refinancing maturing tax-exempt bonds, exiting bridge debt at conversion, year-15 exits, and resyndications. Fannie Mae also offers a dedicated MAH Preservation execution structured around extended affordability commitments.
What is MAH Express?
MAH Express is a streamlined execution designed for smaller MAH transactions, typically in the $1M–$10M range. It uses a reduced underwriting checklist and lighter third-party reporting requirements (similar in spirit to SBL on the conventional side), which compresses both cost and close timeline. Common candidates: small Section 8 properties, smaller LIHTC year-15 refis, and subsidized acquisitions in secondary markets.
Are Section 8 HAP-contracted properties eligible for MAH?
Yes, including properties with project-based HAP contracts, Mark-Up-To-Market HAP renewals, and Mark-To-Market restructured contracts. The HAP contract term, renewal probability, and rent reasonableness analysis are all key underwriting inputs. Fannie Mae will typically size to a coverage assumption that conservatively reflects HAP renewal risk.
What documentation does Fannie Mae require for an MAH loan?
Beyond Standard DUS due diligence, MAH transactions require evidence of the affordability structure — typically including the recorded LURA or extended-use agreement, LIHTC partnership documents, HAP contract (where applicable), state HFA loan documents, tenant income certifications, and a recent property compliance audit. Property managers must demonstrate experience with the relevant compliance regime.
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