Low-Income Housing Tax Credit (LIHTC) development is one of the most scheduling-dependent endeavors in real estate. Miss the 10% expenditure test deadline and you lose your allocation. Miss the placed-in-service deadline and the credits evaporate. Fail to submit your carryover agreement on time and the HFA recaptures the award. A Gantt chart built specifically for LIHTC keeps every deadline visible — IRS statutory dates, HFA milestones, lender draw schedules, and the compliance clock that runs for 15 to 30 years after you open.

How LIHTC Works: Structure Before Schedule

Section 42 of the Internal Revenue Code creates two credit types that drive entirely different timelines. Nine percent credits are allocated competitively through each state's Housing Finance Agency (HFA) via a Qualified Allocation Plan (QAP) process. They generate approximately $1.00 of tax credit equity per dollar of credit over a 10-year period. Four percent credits are non-competitive but require private activity bond financing from the HFA's volume cap — they yield roughly $0.85 per credit dollar at current pricing.

Tax credit equity comes from investors — typically banks motivated by Community Reinvestment Act (CRA) credit, insurance companies, and corporate strategics — who purchase the credits through syndicators like Raymond James Tax Credit Funds, National Partnership Investments, Raymond James, and Boston Capital. Equity pricing as of 2026 ranges from $0.90 to $1.05 per tax credit dollar depending on project risk, location, and investor appetite.

Your Gantt chart must reflect both the investment timeline and the IRS statutory dates. These are not soft milestones — they are hard deadlines with credit recapture as the penalty for missing them.

Phase 1: Pre-Application (Months -12 to -3 Before QAP Deadline)

Most QAP applications are due in Q1 of each year, meaning serious pre-application work begins the prior spring. Your Gantt should open with four parallel workstreams:

Site control. Most HFAs require documented site control at application — an option to purchase, a ground lease, or a deed. Real estate negotiation rarely moves on a predictable timeline, so start 9–12 months before the QAP deadline. Track option expiration dates explicitly in your Gantt; a lapsed option the week before application is a project killer.

Market feasibility study. Lenders and syndicators require a third-party market study showing demand for the proposed units. Commission it 6 months before the QAP deadline to allow time for revisions. The study defines your primary market area (PMA), income qualification thresholds, and captures the competitive supply pipeline.

Environmental review. Phase I Environmental Site Assessments are required at most HFAs before application; projects with recognized environmental conditions (RECs) need Phase II testing. Budget 8–12 weeks for Phase I, and 6–12 additional months if Phase II borings are required. An environmental flag discovered after application submission forces withdrawal.

Financing commitments. Soft sources — HOME funds from HUD, CDBG grants, state housing trust fund loans, AHP grants from the Federal Home Loan Bank — are scored heavily in competitive QAPs. Securing these commitments requires separate application cycles, often running 6–9 months, that must be timed to complete before your QAP application.

QAP scoring analysis. Each HFA publishes its scoring criteria in the QAP. Run a gap analysis against your competition. Map specific points to specific milestones: if transit proximity earns 10 points, confirm your site qualifies before spending money on design. If Green Communities certification earns 15 points, engage your architect immediately — the Green Communities criteria require design decisions that cannot be retrofitted late in the process.

Phase 2: Application and Award (Months 0 to +4)

The QAP application itself takes 4–6 weeks to assemble. Coordinate these workstreams simultaneously:

Architect-prepared site plan and unit floor plans
Legal counsel drafting the organizational documents (LP agreement, GP LLC documents)
Market study delivery and executive summary
Local government letter of support or conditional use permit
Developer narrative, experience documentation, and financial projections

HFAs typically take 90–120 days to review applications and announce awards. During this period, begin preliminary lender conversations with your construction lender and permanent lender. Syndicators will want to see the award letter before issuing a firm equity commitment — time their due diligence to start the day you receive the reservation letter.

Carryover allocation. After award, most HFAs require a carryover agreement within 6 months of allocation. The carryover agreement requires that you have incurred 10% of the reasonably expected basis in the project. This is a real expenditure test — it typically requires closing on the land, beginning architectural work under contract, or incurring other hard costs. Mark this date prominently in your Gantt and work backward from it.

Phase 3: Equity and Debt Closing (Months +4 to +14)

Closing a LIHTC deal requires simultaneous sign-off from the construction lender, permanent lender, tax credit syndicator, and all soft lenders. This is the most scheduling-intensive phase, and a delay from any one party cascades to all others.

Syndicator due diligence. The equity investor's counsel reviews the LP agreement, the development agreement, the operating agreement, the architect's contract, the general contractor's contract, and all of the soft lender documents. This process takes 90–120 days. Start immediately after the reservation letter is issued. Never wait for the construction lender to finish their review first — run these in parallel.

Construction lender underwriting. The construction loan (which is typically a syndicator bridge loan or the permanent lender's own construction product) requires appraisal, environmental review, title work, and a construction budget audit. Allow 90 days from application to commitment, and another 60 days from commitment to closing.

HFA subordinate loan closing. If the project uses HOME funds, CDBG, or the state housing trust fund, the HFA administering those funds is also a closing party. HFA loan documents are frequently slow to finalize — assign a dedicated track in your Gantt for HFA counsel review and build a 30-day buffer.

Zoning and entitlements. If the project requires a rezoning, special use permit, or variance, this must be resolved before construction lenders will close. Zoning hearings are scheduled on municipal calendars that operate independently of your deal timeline. Many LIHTC deals carry zoning as the longest-lead-time item — 6 to 18 months in contested markets.

Phase 4: Construction (Months +14 to +30)

LIHTC construction follows a standard general contractor process with one overlay: the syndicator and construction lender both conduct monthly draw reviews. Track these explicitly.

Every monthly draw requires a draw package: AIA G702/G703 forms from the GC, lien waivers from all subcontractors with payments over the threshold, an architect's certification, a title continuation, and any updated insurance certificates. Your Gantt should include a 2-week draw package preparation window before each monthly draw date.

The syndicator typically conducts 2–3 site inspections during construction, funded by the investor. Coordinate these with the GC so they occur during visible progress milestones.

Placed-in-service deadline. This is the hardest deadline in LIHTC development. The IRS requires that the project be placed in service by the end of the second calendar year after the year of allocation. A project allocated in 2025 must be placed in service by December 31, 2027. Missing this deadline triggers full credit recapture. Most LIHTC projects target an October or November placed-in-service date to allow buffer before December 31. Work backward from your target placed-in-service date when setting your construction start date.

Phase 5: Placed-in-Service and Credit Delivery (Months +30 to +36)

IRS Form 8609 issuance. The HFA issues Form 8609 (Low-Income Housing Credit Allocation and Certification) after the project is placed in service. This form is the legal authority for the tax credit investor to claim credits. The HFA review process takes 60–90 days after you submit your placed-in-service package — which includes the certificate of occupancy, final cost certification prepared by your CPA, and a carryover compliance certification.

Cost certification. Your CPA must audit all project costs and prepare a final cost certification establishing the eligible basis. This is a full audit engagement — budget 60–90 days from project completion to delivery. The investor's syndicator also reviews the cost certification and may require adjustments.

First credit year. The credit period begins in the year the project is placed in service (or the following year, at the developer's election). The investor begins claiming credits on their federal tax return for that year — typically $1M–$4M per year for a standard LIHTC project.

Phase 6: Compliance Period (Years 1–15, Extended to Year 30)

The compliance period begins when the first building in the project is placed in service. The statutory compliance period is 15 years; most HFAs impose an extended use agreement requiring affordability for 30 years or more.

Compliance obligations include: annual income certification for every household, annual HFA inspection, annual owner certification submitted to the HFA, and maintenance of the qualified low-income housing project status (at minimum 20% of units at 50% AMI, or 40% of units at 60% AMI, per the 20/50 or 40/60 test). Noncompliance events must be self-reported to the HFA within 45 days and corrected promptly — uncorrected noncompliance triggers IRS Form 8823 filing by the HFA, which initiates the credit recapture process.

Your compliance calendar, while simple in structure, spans 15–30 years. Use your Gantt to establish annual recurring milestones for certification deadlines, inspection windows, and financial reporting to the syndicator (typically annual audited statements required through the compliance period).

Key Gantt Dependencies to Track

Option expiration → QAP application deadline
QAP award → 10% expenditure test (carryover deadline)
Syndicator due diligence start → equity closing
Zoning approval → construction loan closing
Certificate of occupancy → cost certification → 8609 issuance
Placed-in-service date → credit period start → first investor claim

A well-built LIHTC Gantt makes the difference between a successfully syndicated deal and a recaptured credit. The statutory dates are non-negotiable; your schedule is how you get there.