Federal Credit Guide · Updated September 2026

Federal Low-Income Housing Tax Credit (LIHTC)

A ten-year credit stream for rent-restricted housing — permanently expanded in 2026, and the other half of every mill-to-housing conversion we close.

Value My LIHTC Deal

Low-Income Housing Tax Credit (LIHTC)

What it is: A 10-year stream of federal credits for building or rehabilitating rent-restricted affordable housing. The competitive 9% credit covers roughly 70% of qualified costs in present value; the 4% credit pairs with tax-exempt bonds. The 2025 tax law permanently increased 9% allocations by 12% beginning 2026 and cut the 4% bond-financing threshold from 50% to 25% of aggregate basis.
Quick Facts
Credit amount~9% or ~4% of qualified basis annually for 10 years (≈70% / 30% present value)
Allocated byState housing finance agencies — SC Housing, NCHFA, Virginia Housing — under each state’s QAP
2025 law changesPermanent +12% to 9% state ceilings from 2026; 4% bond threshold lowered to 25% of aggregate basis
RequirementsRent and income restrictions for at least 30 years; 15-year federal compliance period
InvestorsBanks (CRA-motivated), insurance companies, corporations — via syndicated funds or direct investment
Stacks withFederal and state historic credits on mill-to-housing conversions; state LIHTCs including the SC Housing Tax Credit and Virginia HOTC

The 25% bond threshold is the sleeper change. Deals that could not pencil under the 50% test now qualify with half the bond debt, and combined with the 9% ceiling increase, more affordable deals will close in the next five years than in any comparable period. Every one of them needs credit pricing, projections, and an investor.

For rehabilitation developers the important interaction is with historic credits: a mill converted to affordable housing can carry both, but LIHTC basis adjustments change the historic credit math and the two have different compliance periods and different investor markets.

Our role as syndicator

We build the LIHTC projections, model 9% versus 4% executions under the new thresholds, structure twinned historic and LIHTC deals, and place the credits. Our partner CPA firm handles the cost certifications and the audits the compliance period demands.

Model my affordable housing deal

Official references: IRC §42; state Qualified Allocation Plans; OBBBA (P.L. 119-21, July 2025).

Federal LIHTC FAQ

What is the difference between the 9% and 4% LIHTC?

The 9% credit is competitively allocated by the state housing finance agency and covers roughly 70% of qualified costs in present value. The 4% credit is non-competitive and pairs with tax-exempt bond financing, covering roughly 30%. The 2025 tax law cut the bond-financing threshold for the 4% credit from 50% to 25% of aggregate basis.

What did the 2025 tax law change for LIHTC?

Two permanent changes: a 12% increase to the 9% state credit ceilings beginning in 2026, and a reduction of the 4% bond-financing threshold from 50% to 25% of aggregate basis. Together they are expected to unlock more than a million additional units over a decade.

Can LIHTC be combined with historic tax credits?

Yes, and it is the classic structure for mill-to-housing conversions. The interaction requires care: LIHTC basis adjustments change the historic credit calculation, the two credits have different compliance periods, and they usually go to different investors.

How long is the compliance period?

Fifteen years for federal compliance, with rent and income restrictions running at least 30 years under the extended use agreement.

Get a Free LIHTC Assessment

More Affordable Deals Will Close in the Next Five Years Than Ever.

The 2026 expansion changed what pencils. Send us the deal and we will price it.