Summary
IRS IRC § 42 Audit Technique Guide — Part I (Introduction and Pre-Contact Analysis) · 2026 edition · updated 2026-07-29 · United States
IRC §42 provides federal tax incentives for equity investments in low-income housing.
The taxpayer can build new housing, or acquire and rehabilitate existing housing. The housing can be apartments, single-family housing, single-occupancy rooms, or even transitional housing for the homeless. The project may include both low- income and market-rate rental units, and a portion of the property may be for commercial use. The housing must qualify as residential rental property; e.g., no hotels, hospitals, or nursing homes, etc.
The taxpayer agrees to provide low-income housing for at least thirty years. The taxpayer receives credit for ten years (credit period), must provide low-income housing under IRS jurisdiction for fifteen years (compliance period), and under the state agency's sole jurisdiction for at least an additional fifteen years (extended use period). All three time periods begin on the same day; i.e., the first day of the tax year in which the building is placed in service, or if the taxpayer elects, the beginning of the following year.
The amount of credit the taxpayer can claim each year is determined as:
Eligible Basis x Applicable Fraction = Qualified Basis
Qualified Basis x Applicable Percentage = Annual Credit Amount
The eligible basis is the total allowable costs associated with the depreciable residential rental project. The applicable fraction is the portion of rental units that are qualified low-income units.
The applicable percentage is the discount factor needed to limit the annual credit to the present value of either 70% or 30% of the qualified basis, depending on the characteristics of the housing.
The allowable credit may be reduced (in part or in whole) if the taxpayer is not compliant with IRC §42 requirements. The taxpayer may also be subject to the recapture of credit claimed in prior years under IRC §42(j).
If a taxpayer disposes of a low-income building (or interest therein), no credit is allowable in the year of the disposition and the taxpayer is subject to recapture unless the taxpayer reasonably expects that the building will continue to be operated as a low-income building for the remaining compliance period.
The program is jointly administered by the IRS and state-authorized tax credit allocating agencies. Each state receives tax credits annually. The agencies are responsible for identifying the state's housing needs, allocating credit to qualifying projects that meet the state's QAP criteria, and monitoring the operating project for on-going compliance with IRC §42. Noncompliance is reported to the IRS.
The IRS' compliance responsibilities include the processing of forms submitted by state agencies and taxpayers, and ensuring compliance through activities such as auditing taxpayers' federal income tax returns.
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Ask AI about this code▸ Contents — IRS IRC § 42 Audit Technique Guide — Part I (Introduction and Pre-Contact Analysis)
- IRC §42, Low-Income Housing Credit - Part I Introduction and P…
- Chapter 1 Introduction
- Topics
- Overview of the IRC §42 Program
- Types of Housing
- Combining with Other Tax Credits
- Computation of Allowable Annual Credit
- Eligible Basis
- Applicable Fraction
- Qualified Basis
- Applicable Percentage
- Compliance Requirements
- Credit Disallowance and Recapture
- State Housing Agency Responsibilities
- Qualified Allocation Plan (QAP)
- Allocating Credits
- Compliance Monitoring
- Reporting Noncompliance to the IRS
- Annual Report to the IRS
- IRS Responsibilities: Chief Counsel
- IRS Responsibilities: LIHC Compliance Unit
- Form 8610, with Form 8609 and Schedule A (Form 8610)
- Form 8823
- Form 8821
- IRS Responsibilities: Audits
- Summary
- Chapter 2 Pre-contact Analysis
- Introduction
- Topics
- Form 8609, Low-Income Housing Credit Allocation and Certificat…
- Amount of Credit Allocated
- Eligible Basis and Qualified Basis
- Applicable Percentage
- Type of Allocation
- Tax-Exempt Bonds
- Nonprofit Set-Aside
- Credit Period: BINs, Dates, and Elections
- Multi-Building Projects
- Minimum Set-Aside
- Property Address
- Form 8823, Low-Income Housing Credit Agencies Report of Noncom…
- Reconciliation to Forms 8609
- Rental Units
- Period of Noncompliance
- Categories of Noncompliance
- Dispositions
- Form 8609-A, Annual Statement for Low-Income Housing Credit
- Part I, Compliance Information
- Part II, Computation of Credit
- Balance Sheet
- Land Values
- Buildings and Other Depreciable Assets
- Accounts Receivable and Payable
- Schedule K and Schedule K-1
- Ownership By Individuals
- Prior and Subsequent Year Returns
- Related Returns
- Partners: Consistent Treatment
- General Partner: Additional IRC §42 Projects
- Risk Analysis
- Example 1: Estimating Potential Tax
- Initial Information Document Request
- General Information about the Taxpayer
- Tax Returns
- Eligible Basis
- Qualifying Low- Income Households
- 1st and 11th Year of the Credit Period
- Additions to Qualified Basis
- Examination of Income: Rents & Other Sources of Income
- Noncompliance
- Dispositions
- IDR & Crosswalk to Issues
- Summary
- Exhibit 2-1 IDR & Crosswalk to Issues
- General Information about the Credit Allocation
- Eligible Basis
- Qualifying Low- Income Households
- 1st and 11th Year of the Credit Period
- Additions to Qualified Basis
- Rents & Other Sources of Income (Minimum Income Probes)
- Noncompliance
- Dispositions
- Chapter 3 Audit Techniques
- Introduction
- Topics
- Interviewing Taxpayers
- Background and Financial History
- Business Practices
- Internal Controls
- Compliance with IRC §42
- Physical Maintenance
- Tenant Qualifications
- Tenant Files
- Rents
- Cash Flows
- Community Service Facilities
- Forms 8823
- Prior and Subsequent Year Tax Returns
- Large, Unusual, or Questionable Items
- Related Parties or Returns
- Touring IRC §42 Projects
- Preparing for Tour of an IRC §42 Project
- Physical Characteristics to Observe When Touring IRC §42 Proje…
- Rents
- Income Qualifying New Tenants
- Mixed-Use Projects
- Community Service Facilities
- Analyzing Results
- Case File Documentation
- Evaluating Internal Controls
- Control Environment
- Accounting System
- Control Procedures
- Testing Internal Controls
- Establishing Scope and Depth of the Audit
- Third Party Contacts
- Contacting State Agencies
- Other Third Party Contacts
- Summary