What is the Low-Income Housing Tax Credit Program (LIHTC)?

The Low-Income Housing Tax Credit (LIHTC) represents the federal government’s most significant tool for encouraging affordable housing development. Since its creation in 1986, the program has financed more than three million affordable rental units across the country. The program’s complex regulations, strict compliance requirements, and ongoing certification processes demand specialized knowledge that separates effective housing management from costly violations and lost credits.

Key Takeaways

• The Low-Income Housing Tax Credit program provides federal tax incentives to developers and investors who build or rehabilitate affordable rental housing for low- and moderate-income tenants.
• LIHTC provides federal tax incentives through dollar-for-dollar reductions in tax liability, with two types of credits: the more competitive 9% credit for new construction and the 4% credit for acquisition, rehabilitation, or tax-exempt bond projects.
• Income verification and certification require examining multiple documentation sources and calculating annual income using Treasury Regulation methods that often differ from conventional lending programs, making specialized knowledge essential.
• LIHTC compliance professionals benefit significantly from certifications like the Tax Credit Specialist (TCS) and must develop strong organizational, analytical, and technology skills to navigate complex regulations and prevent costly violations.
• Breaking LIHTC requirements triggers credit recapture and can jeopardize millions of dollars in tax credits, making strict adherence to income restrictions, rent limits, and annual inspections critical to successful property management.

What is the LIHTC Program?

The Low-Income Housing Tax Credit program provides federal tax incentives to developers and investors who build or rehabilitate affordable rental housing for low- and moderate-income tenants. Rather than direct subsidies, LIHTC offers dollar-for-dollar reductions in federal tax liability over a ten-year period, making affordable housing development financially viable for private investors.

State housing finance agencies allocate these credits to developers through a competitive application process. Once awarded, developers typically sell the credits to investors, raising equity capital that reduces debt and makes projects feasible at lower rents. The program operates under Section 42 of the Internal Revenue Code, which establishes the framework for credit allocation, tenant eligibility, and compliance monitoring.

Two types of credits exist:

• 9% credit for new construction without additional federal subsidies
• 4% credit for projects involving acquisition, rehabilitation, or those using tax-exempt bonds.

The 9% credit is more competitive and typically covers about 70% of a project’s eligible basis, while the 4% credit covers roughly 30%.

Qualifying for the Credit

Developers must meet specific set-aside requirements to qualify for and maintain LIHTC credits. Properties must satisfy one of three tests:

1. 20-50 test (at least 20% of units occupied by households at or below 50% of area median income)
2. 40-60 test (40% of units for households at 60% AMI or below)
3. Average income test (40% of units for households averaging 60% AMI, with no household exceeding 80% AMI)

The compliance period spans 15 years from project completion, during which owners must maintain affordability standards and submit to annual inspections. An additional 15-year extended use period follows, ensuring long-term affordability commitments. Breaking these requirements can trigger credit recapture, a costly penalty that makes investors and owners highly motivated to maintain strict compliance.

From a high level:

• Application & Allocation — Developers apply to their state housing finance agency (HFA) for tax credit allocation. The HFA evaluates applications against its Qualified Allocation Plan (QAP), which prioritizes projects serving the lowest-income households and longest affordability periods. Credits are awarded competitively.
• Financing & Syndication — Once credits are awarded, developers typically sell them to investors through a syndicator. This generates equity for the project. Investors form a limited partnership or LLC with the developer to formalize the arrangement.
• Construction & Placed-in-Service — The project is built or rehabilitated. Once complete and available to tenants, it’s considered “placed in service,” which triggers the start of the 10-year credit period.
• Ongoing Compliance Certification — This is where annual certification comes in. Owners must certify each year that the project continues to meet income and rent requirements. Tenants must provide income documentation, and owners submit compliance reports to the state HFA, which in turn reports to the IRS.
• IRS Reporting — State agencies file IRS Form 8610 annually, while investors claim credits on Form 8586.

Eligible Types of Housing

LIHTC credits can finance various residential property types, provided they meet program requirements. New construction projects are eligible, whether they’re garden-style apartments, mid-rise buildings, or scattered-site developments. The program also supports substantial rehabilitation of existing properties, typically requiring minimum per-unit expenditures to qualify.

Adaptive reuse projects, converting non-residential buildings like schools, warehouses, or office buildings into affordable housing, frequently use LIHTC financing. Single-room occupancy (SRO) units, which provide permanent housing for extremely low-income individuals, also qualify under the program.

But, not every housing type is eligible. Transient housing, including hotels and facilities where typical stays are less than six months, generally doesn’t qualify. Nursing homes, retirement communities, and student housing face restrictions, though some exceptions exist depending on state allocation plans and specific circumstances. Properties must serve the general public and can’t restrict occupancy to members of a particular organization or group, with limited exceptions for elderly or disabled populations.

Mixed-income developments represent a popular LIHTC strategy, combining tax credit units with market-rate apartments. This approach creates economically diverse communities while maximizing project feasibility. Only the affordable units generate credits, but the market-rate component provides additional revenue that strengthens overall project finances.

LIHTC Tax Benefits & Considerations

How the Tax Credit Works

Investors can claim LIHTCs over a 10-year period once a housing project is placed in service. The annual credit equals a credit percentage multiplied by the project’s qualified basis — essentially the portion of the project’s cost allocated to income-qualifying tenants.

Credit Percentages

There are two credit tiers:

• ~9% credit (70% present value) — for new construction or substantial rehabilitation
• ~4% credit (30% present value) — for acquired properties or projects financed with tax-exempt bonds

Projects in “difficult development areas” or “qualified census tracts” can receive a 30% boost in available credits.

Who Can Use the Credits

The credits are nonrefundable, so they’re most valuable to corporations with significant income tax liability. Financial institutions are historically the largest investors, partly because the investments can earn them Community Reinvestment Act credit. Investors cannot claim credits until the project is placed into service.

Additional Tax Benefits for Investors

Beyond the credits themselves, investors also benefit from depreciation, interest deductions, and net operating losses associated with the housing project.

Compliance Risk

Projects must meet income and rent tests for a minimum of 15 years. If they fail to comply, the tax credits are recaptured — meaning investors must pay them back. State agencies typically extend this compliance period to 30 years total.

LIHTC Compliance Requirements

LIHTC compliance demands specialized knowledge that extends beyond traditional property management skills. Professionals working with tax credit properties must understand Treasury Regulations Section 1.42, state allocation plans, fair housing law, and property-specific land use restriction agreements. This regulatory complexity makes ongoing education essential.

Occupancy specialists and compliance officers need strong attention to detail and analytical skills to navigate income calculations, which involve complex rules for different income sources. Self-employment income, asset calculations, and determining household composition in non-traditional families require interpretation skills and regulatory knowledge. Errors in these calculations can create compliance violations that jeopardize millions of dollars in tax credits.

Organizational skills and document management capabilities are critical. LIHTC properties generate extensive paperwork, and state agencies have zero tolerance for missing documentation. Professionals must establish systems that ensure complete, accurate files for every household while meeting tight deadlines for certifications and recertifications.

Professional certifications validate expertise and enhance career prospects in affordable housing. Credentials like the Housing Credit Certified Professional (HCCP), Tax Credit Specialist, and specialized LIHTC compliance certifications demonstrate mastery of program requirements. These designations open doors to advancement and signal to employers and investors that staff possess the specialized knowledge necessary to protect valuable tax credits.

Technology proficiency is increasingly important as compliance software becomes standard in LIHTC management. Platforms that automate income calculations, track recertification deadlines, and generate required reports improve accuracy and efficiency. Professionals must adapt to these tools while maintaining the regulatory understanding that prevents over-reliance on automated systems without human oversight.

Invest in training to ensure property management can accurately tackle the responsibilities of LIHTC-funded properties.

Frequently Asked Questions

1. What is the Low-Income Housing Tax Credit (LIHTC) program? The LIHTC program provides federal tax incentives to developers and investors who build or rehabilitate affordable rental housing. Operating under Section 42 of the Internal Revenue Code, it offers dollar-for-dollar reductions in federal tax liability over ten years, making affordable housing development financially viable for private investors through competitive state allocation processes.
2. How do the 9% and 4% LIHTC credits differ? The 9% credit applies to new construction without additional federal subsidies and covers approximately 70% of a project’s eligible basis. The 4% credit finances projects involving acquisition, rehabilitation, or those using tax-exempt bonds, covering roughly 30% of eligible basis. The 9% credit is more competitive.
3. What income requirements must tenants meet to qualify for LIHTC housing? LIHTC properties must meet one of three tests: the 20-50 test (20% of units for households at 50% AMI or below), the 40-60 test (40% of units at 60% AMI or below), or the average income test (40% of units averaging 60% AMI). These requirements remain in place throughout the 15-year compliance period.
4. What happens if an LIHTC property fails to maintain compliance requirements? Breaking LIHTC compliance requirements triggers credit recapture, a costly penalty that can jeopardize millions in tax credits. Properties must maintain affordability standards, submit annual inspections, and keep complete documentation for at least six years. This strict enforcement makes compliance expertise essential for property managers.
5. What types of housing projects can use LIHTC financing? Eligible projects include new construction, substantial rehabilitation, adaptive reuse of non-residential buildings, and single-room occupancy units. Mixed-income developments combining affordable and market-rate units are popular strategies. However, transient housing like hotels, nursing homes, and student housing generally don’t qualify, though state-specific exceptions may apply.
6. What professional certifications help LIHTC property managers advance their careers? Credentials like the Housing Credit Certified Professional (HCCP), Tax Credit Specialist, and specialized LIHTC compliance certifications validate expertise in affordable housing. These designations demonstrate mastery of Treasury Regulations and program requirements, opening doors to advancement and signaling to employers that professionals possess the specialized knowledge needed to protect valuable tax credits.