Nationwide Affordable Housing Compliance

    Reference

    The Affordable Housing Compliance Glossary

    Plain-language definitions, organized by program. The reference guide compliance teams actually use, free and open to anyone.

    Acquisition/Rehab

    LIHTC

    A LIHTC development pattern where an existing property is purchased and rehabilitated. Has specific compliance implications including credit eligibility for existing tenants.

    Affirmative Fair Housing Marketing Plan

    HUD

    A required marketing plan describing how an affordable housing property will attract applicants from all racial, ethnic, and disability groups in its market area. Required for HUD-subsidized and LIHTC properties.

    Allocating Agency

    LIHTC

    The state housing finance agency responsible for allocating tax credits, conducting compliance monitoring, and enforcing program requirements within the state.

    AMI

    General Compliance

    Area Median Income. The midpoint income for a geographic area, published annually by HUD. Affordable housing programs use percentages of AMI to determine income eligibility and rent limits.

    AMI (Area Median Income)

    General Compliance

    The midpoint income for a geographic area, published annually by HUD. Affordable housing programs use percentages of AMI to determine income eligibility and rent limits.

    Annual Recertification

    LIHTC / HUD

    The yearly process of verifying tenant income, assets, and household composition to confirm continued eligibility for an affordable housing program.

    Asset Disposition

    General Compliance

    The transfer or sale of an asset for less than fair market value. Affordable housing programs typically apply a two-year lookback rule, imputing the difference as an asset.

    Available Unit Rule

    LIHTC

    A Section 42 rule allowing a property to continue receiving credits on a unit occupied by a tenant whose income has exceeded the program limit, provided no comparable or smaller units are leased to non-qualified tenants.

    Average Income Test

    LIHTC

    A LIHTC set-aside option allowing income limits up to 80% AMI with an average across the property of 60% AMI or less. Provides flexibility but complicates compliance tracking.

    BIN

    LIHTC

    Building Identification Number. A unique number assigned to each building in a LIHTC project for compliance tracking and reporting.

    BIN (Building Identification Number)

    LIHTC

    A unique number assigned to each building in a LIHTC project for compliance tracking and reporting.

    BMR (Below Market Rate)

    General Compliance

    A general term for affordable units offered at rents below market rate, often used in inclusionary zoning programs.

    BOND

    Bond

    Tax-exempt bonds used to finance affordable housing development. Bond-financed properties have specific occupancy and income restrictions throughout the bond term.

    BOND (Tax-Exempt Bonds)

    Bond

    Tax-exempt bonds used to finance affordable housing development. Bond-financed properties have specific occupancy and income restrictions throughout the bond term.

    Carryover Allocation

    LIHTC

    A LIHTC mechanism allowing credits to be allocated before the building is placed in service, subject to specific requirements being met within designated timeframes.

    Comparable Unit

    LIHTC

    A unit similar in size, amenities, and bedroom count to a target unit, used in determining whether the Available Unit Rule applies.

    Compliance Period

    LIHTC

    The 15-year initial period during which a LIHTC property must comply with Section 42 requirements to avoid recapture of tax credits.

    Concession

    General Compliance

    A reduction in rent or fees provided to a tenant. Affordable housing programs treat concessions in specific ways for rent calculation and compliance purposes.

    Credit Period

    LIHTC

    The 10-year period during which a LIHTC property claims tax credits annually. Begins when the building is placed in service.

    Deferred Move-In

    General Compliance

    A practice of holding a unit for a qualified tenant who is delayed in moving in. Has specific compliance implications for vacancy tracking and credit eligibility.

    Developer Fee

    LIHTC

    Compensation to the LIHTC project developer, subject to state agency limits and inclusion in eligible basis calculations.

    Displacement

    General Compliance

    The involuntary relocation of existing tenants from a property. Various programs require displacement plans and protections.

    Effective Date

    General Compliance

    The date a certification, lease, or rent change takes effect. Critical for compliance timing and TRACS submissions.

    EIV

    HUD

    Enterprise Income Verification. HUD's system for verifying tenant income against federal records. EIV use is mandatory for HUD multifamily properties.

    EIV (Enterprise Income Verification)

    HUD

    HUD's system for verifying tenant income against federal records. EIV use is mandatory for HUD multifamily properties.

    Eligible Basis

    LIHTC

    The portion of a LIHTC project cost that qualifies for tax credit calculation. Excludes land and certain other costs.

    Extended Use Period

    LIHTC

    An additional period beyond the initial 15-year compliance period during which a LIHTC property must continue operating as affordable housing. Total minimum is typically 30 years.

    Fair Housing Act

    General Compliance

    Federal law prohibiting discrimination in housing on the basis of race, color, national origin, religion, sex, familial status, or disability.

    Fair Market Rent

    HUD

    The 40th percentile rent for an area, published annually by HUD. Used to set payment standards in voucher programs and rent ceilings in some other programs.

    Fair Market Rent (FMR)

    HUD

    The 40th percentile rent for an area, published annually by HUD. Used to set payment standards in voucher programs and rent ceilings in some other programs.

    Family Size Adjustment

    General Compliance

    Adjustments to income limits based on household size, applied to determine eligibility for affordable housing programs.

    First-Year Fraction

    LIHTC

    The proportion of credits available in the first year of the credit period, based on the date units were placed in service. Calculated using specific Section 42 methodology.

    Form 8823

    LIHTC

    The IRS form on which state housing agencies report LIHTC noncompliance. A Form 8823 filing has significant consequences for property owners.

    General Public Use Rule

    LIHTC

    A Section 42 requirement that LIHTC units be available to the general public, with limited exceptions for permissible occupancy restrictions.

    Good Cause Eviction

    LIHTC

    A LIHTC requirement that tenants can only be evicted for good cause. Must be referenced in lease language for LIHTC properties.

    Gross Rent

    General Compliance

    The total rent paid by a tenant, including tenant-paid rent and any tenant-paid utilities. Used for rent limit compliance calculations.

    Hold Harmless

    General Compliance

    A provision protecting affordable housing properties from negative impacts of income limit decreases. Specific rules vary by program.

    HOME Program

    HOME

    The HOME Investment Partnerships Program, a federal block grant providing affordable housing funding to states and localities. Properties have specific compliance requirements during a period of affordability.

    HOTMA

    General Compliance

    The Housing Opportunity Through Modernization Act of 2016. Federal legislation overhauling income, asset, and recertification rules for HUD-assisted housing. Full compliance required for HUD multifamily by January 1, 2027.

    Housing Quality Standards (HQS)

    HUD

    Physical condition standards previously used to inspect HUD-assisted housing. Largely replaced by NSPIRE.

    Imputed Income from Assets

    General Compliance

    Income calculated by applying a prescribed rate to total asset value, used when assets exceed certain thresholds and produce minimal actual income.

    Income Averaging

    LIHTC

    See Average Income Test.

    Income Limits

    LIHTC / HUD / HOME

    Maximum allowed incomes for tenant eligibility in affordable housing programs, calculated as percentages of AMI and published annually by HUD.

    Interim Recertification

    General Compliance

    A recertification triggered between annual recerts by specific events such as significant income changes or household composition changes. Triggers and rules vary by program.

    LIHTC

    LIHTC

    Low-Income Housing Tax Credit. A federal tax credit program incentivizing affordable housing development. Properties operate under Section 42 of the Internal Revenue Code.

    Live-in Aide

    General Compliance

    A person residing with a tenant to provide necessary supportive services. Live-in aides do not count toward household size or income for affordable housing programs.

    Material Noncompliance

    LIHTC

    A LIHTC violation serious enough to affect credit eligibility. Typically reported on Form 8823 and may result in credit recapture.

    Mixed-Income

    General Compliance

    A property containing both affordable and market-rate units. Compliance is required for the affordable units only.

    Move-In Income Certification

    LIHTC

    The initial income verification documenting a tenant's eligibility at the time of move-in. Establishes the household's income for compliance purposes.

    NAUR (No Acceptable Unit Restriction)

    LIHTC

    A condition where a LIHTC unit is occupied by a non-qualified tenant and no comparable unit is available for a qualified tenant. Triggers compliance concerns under the Available Unit Rule.

    Net Family Assets

    General Compliance

    Total household assets used to determine asset-related income. Under HOTMA, the self-certification threshold (indexed annually; $52,787 for 2026) determines verification requirements.

    NSPIRE

    HUD

    The National Standards for the Physical Inspection of Real Estate. HUD's framework for inspecting physical conditions of subsidized housing.

    OCAF (Operating Cost Adjustment Factor)

    HUD

    An annual factor applied to rent adjustments in certain HUD contracts.

    Other Adjustments to Income

    General Compliance

    Allowable deductions from gross income for affordable housing eligibility, including elderly/disabled allowance, dependent allowance, medical expenses, and others. Specific rules vary by program.

    PBRA

    HUD

    Project-Based Rental Assistance. A HUD program providing rental subsidies tied to specific properties rather than to individual tenants.

    PBRA (Project-Based Rental Assistance)

    HUD

    A HUD program providing rental subsidies tied to specific properties rather than to individual tenants.

    PHA

    HUD

    Public Housing Authority. A government agency responsible for administering federal housing programs, including public housing and Housing Choice Vouchers.

    PHA (Public Housing Authority)

    HUD

    A government agency responsible for administering federal housing programs, including public housing and Housing Choice Vouchers.

    Placed in Service

    LIHTC

    The date a LIHTC building is ready and available for its intended use. Triggers the start of the credit period for first-year fraction purposes.

    Public Use Rule

    LIHTC

    See General Public Use Rule.

    QAP (Qualified Allocation Plan)

    LIHTC

    A state agency's plan describing how LIHTC credits will be allocated, including selection criteria and compliance monitoring procedures.

    Qualified Basis

    LIHTC

    The portion of eligible basis attributable to LIHTC-qualified units, used to calculate the annual tax credit amount.

    Qualified Census Tract

    LIHTC

    A census tract where at least 50% of households have incomes below 60% of AMI or where the poverty rate is at least 25%. LIHTC properties in QCTs may qualify for increased credits.

    RAD

    HUD

    Rental Assistance Demonstration. A HUD program converting public housing and other subsidized properties to long-term project-based rental assistance contracts.

    RAD (Rental Assistance Demonstration)

    HUD

    A HUD program converting public housing and other subsidized properties to long-term project-based rental assistance contracts.

    REAC

    HUD

    HUD's Real Estate Assessment Center, responsible for inspections and assessments of HUD-subsidized properties.

    Recapture

    LIHTC

    The repayment of previously claimed tax credits triggered by noncompliance. Severe consequence for LIHTC owners.

    Recertification

    LIHTC / HUD

    The process of verifying a tenant's continued eligibility for an affordable housing program through updated income, asset, and household composition information.

    Right of First Refusal

    LIHTC

    A provision giving nonprofit partners the right to purchase a LIHTC property at a defined price after the compliance period.

    Rural Development

    Rural Development

    USDA's Rural Development program, including Section 515 multifamily housing financing for rural affordable housing properties.

    Section 202

    HUD

    Supportive Housing for the Elderly. HUD program providing housing and supportive services for very low-income seniors.

    Section 42

    LIHTC

    The section of the Internal Revenue Code governing the Low-Income Housing Tax Credit program.

    Section 8

    HUD

    Federal housing assistance covering both tenant-based vouchers (Housing Choice Voucher) and project-based rental assistance. Major program for low-income rental housing.

    Section 811

    HUD

    Supportive Housing for Persons with Disabilities. HUD program providing housing and supportive services for very low-income people with disabilities.

    Set-Aside

    LIHTC

    The portion of a LIHTC property's units that must be occupied by income-qualified tenants. Common set-asides include 20-50, 40-60, and 100% income averaging.

    Streamlined Recertification

    HUD

    A simplified recertification process available under certain conditions, typically for fixed-income households.

    Student Status

    LIHTC

    A determination of whether a household member is a full-time student. LIHTC has specific restrictions on units occupied entirely by full-time students.

    Tenant Income Certification

    LIHTC

    The form documenting a LIHTC tenant household's income, assets, and household composition for compliance verification.

    Tenant Income Certification (TIC)

    LIHTC

    The form documenting a LIHTC tenant household's income, assets, and household composition for compliance verification.

    Tenant Selection Plan (TSP)

    HUD

    A required written plan describing a HUD multifamily property's procedures for selecting tenants. Must comply with Fair Housing and program requirements.

    Total Tenant Payment (TTP)

    HUD

    The portion of rent a HUD-subsidized tenant is required to pay, calculated based on income, allowances, and program rules.

    TRACS

    HUD

    Tenant Rental Assistance Certification System. HUD's electronic system for receiving tenant data and rental assistance payment requests from HUD multifamily owners.

    UIV (Upfront Income Verification)

    HUD

    The first tier of HUD income verification, including EIV. Under HOTMA, the verification hierarchy starts with UIV before moving to third-party or self-certification.

    Utility Allowance

    LIHTC / HUD

    An estimated cost of utilities paid by tenants, used to calculate the rent a tenant can be charged. Updates annually based on prescribed methodologies.

    VASH (Veterans Affairs Supportive Housing)

    HUD

    A HUD-VA collaborative program providing housing vouchers and supportive services for homeless veterans.

    VAWA

    General Compliance

    Violence Against Women Act protections for tenants in federally-assisted housing experiencing domestic violence, dating violence, sexual assault, or stalking.

    Verification Hierarchy

    General Compliance

    The structured approach to verifying tenant information, typically progressing from upfront verification to third-party verification to self-certification. Strictly defined under HOTMA.

    Workout Plan

    General Compliance

    A documented plan to address material noncompliance findings, typically involving timeline, remediation steps, and responsible parties.

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    Related resources

    More from the Altus Compliance library.

    Checklist

    The HOTMA 2027 Readiness Checklist

    A 21-page practical checklist for HUD multifamily owners preparing for the January 1, 2027 HOTMA compliance deadline.

    Get the checklist

    Checklist

    The LIHTC File Review Checklist

    The actual checklist our compliance reviewers use. Walk through any LIHTC file with a structured methodology.

    Get the checklist

    Reference

    The TRACS 202D Submission Cheat Sheet

    Common errors that cause TRACS rejections and how to fix them before submission.

    Get the cheat sheet