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Low-Income Housing Tax Credits (LIHTC) and How They Fit into Financial Models

5 min readUpdated July 22, 2026By Justin Acciavatti

 

 

If you develop affordable housing, you have heard of Low-Income Housing Tax Credits. How LIHTC actually enters a financial model is less widely understood, and it changes the capital stack enough to decide whether a project works.

 

What is LIHTC?

The Low-Income Housing Tax Credit is a federal program created in 1986 to encourage private investment in affordable housing. It gives developers tax credits that offset part of the cost of building or rehabilitating rental housing for low-income tenants. Those credits are what make affordable projects viable in markets where costs are high and margins would otherwise be too thin.

 

How LIHTC Works

LIHTC runs through a competitive application process managed by state housing agencies. Developers who receive credits sell them to investors, often large financial institutions, in exchange for equity. That sale puts cash into the capital stack, which reduces reliance on debt and improves feasibility.

 

Federal and State Tax Credits

LIHTC includes federal credits and, in some states, state credits as well. Federal credits are typically awarded over 10 years, while state programs vary. A project awarded $1 million in federal LIHTC annually provides $10 million in total credits over the period. Supplementary state credits can improve the profile further.

Investors buy the credits at a discount. A dollar of LIHTC might sell for $0.90 to $0.95 depending on market conditions. The sale provides immediate cash for development costs while the investor takes the tax benefit over the life of the credit.

 

The Role of LIHTC in Financial Models

In an affordable housing model, LIHTC appears as equity in the capital stack, offsetting construction and development costs. Three things follow from that:

  1. Equity contribution. Credit sale proceeds are injected as equity, reducing loan size and lowering debt service.
  2. Cash flow planning. That equity eases ongoing pressure on the project, which makes positive cash flow achievable while rents stay affordable.
  3. Feasibility analysis. Modeling the credits lets you size the gap between total development cost and available financing, which is the number that decides whether the deal proceeds.

 

 

Example: LIHTC in a Capital Stack

A 100-unit affordable housing project with total costs of $20 million might stack up like this:

  • LIHTC equity: $8 million, from federal credits sold at $0.92 per $1 of credit
  • State tax credits: $2 million, where available, sold at a similar rate
  • Debt financing: $8 million
  • Other equity or grants: $2 million

LIHTC equity is 40% of the stack here. Move the credit pricing by five cents and the funding gap moves by roughly $450,000, which is why the pricing assumption deserves its own line in the model rather than a rounded estimate.

 

Why the Model Matters

Whether you are a developer, investor, or housing agency, the model is where an affordable housing deal is actually decided. A good one lets you:

  • Test feasibility. Determine whether the project works with the resources available.
  • Size the capital stack. Find the workable mix of LIHTC, state credits, debt, and grants.
  • Answer stakeholders. Give lenders, investors, and housing agencies numbers they can trace.

 

LIHTC decides whether most affordable housing projects pencil.

 

Final Thoughts

LIHTC decides whether most affordable housing projects pencil, and its treatment in the model is not incidental. Credit pricing, the timing of the equity, and the interaction with debt all move the outcome, and each is an assumption worth defending to whoever is funding the deal.

 

 

Frequently Asked Questions

What is LIHTC?

The Low-Income Housing Tax Credit is a federal program created in 1986 that gives developers tax credits offsetting part of the cost of building or rehabilitating rental housing for low-income tenants. Developers sell those credits to investors in exchange for equity. Those credits are what make affordable projects viable where costs are high and margins would otherwise be too thin.

How does LIHTC enter the capital stack?

Credit sale proceeds are injected as equity, which reduces the loan required and lowers ongoing debt service. In this article’s 100-unit, $20 million example, LIHTC equity accounts for $8 million of the stack, or 40% of total cost. State credits, conventional debt and other equity or grants make up the rest.

What price do LIHTC credits sell at?

Investors buy credits at a discount to face value, commonly around $0.90 to $0.95 per dollar of credit depending on market conditions. The sale puts immediate cash into development costs while the investor takes the tax benefit over the life of the credit. Pricing moves with market appetite, so it is worth confirming rather than assuming.

Why does credit pricing matter so much in the model?

Because it moves the funding gap directly. On the $20 million example in this article, a five cent change in pricing shifts the gap by roughly $450,000, which is large enough to decide whether the project proceeds. That is the argument for modeling pricing explicitly rather than rounding it.