State Credit Guides · Updated September 2026

North Carolina Historic & Mill Rehabilitation Tax Credits

Two state programs, and you may claim only one. On a qualifying mill the difference between them can be worth several million dollars of equity.

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One Guide Per Credit

North Carolina runs two separate rehabilitation credits under two separate statutes. Each has its own guide below — and the election between them is the first thing to settle.

Mill Rehabilitation Credit (Article 3H)

40% tier 1–2 / 30% tier 3 · no cap

Reenacted in 2021 and available today, despite what most published summaries say. 40% of qualified expenditures, uncapped, $3M minimum spend, placed in service before 2030.

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Historic Rehabilitation Credit (Article 3L)

15%–30% · $4.5M project cap

The general historic credit: 15% on the first $10M, 10% to $20M, plus 5% bonuses for tier, targeted investment and education. Capped at $4.5 million per project.

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Article 3H or Article 3L — You Elect One

This is the single decision that moves the most money on a North Carolina mill. G.S. 105-129.74 bars claiming the Article 3L historic credit with respect to the same activity for which the Article 3H mill credit is claimed. The two state programs are mutually exclusive.

Article 3H — Mill CreditArticle 3L — Historic Credit
40% (tier 1/2) or 30% (tier 3)15% to $10M, 10% to $20M, 0% above
No per-project cap$4,500,000 cap per project
$3,000,000 minimum spendNo comparable minimum
80% vacant 2 years; manufacturing or utility prior useNo prior-use test for the base credit
Placed in service before Jan 1, 2030QREs before Jan 1, 2030; in service by Jan 1, 2032

A qualifying mill of any real size generally elects Article 3H. Article 3L is the better answer where the project fails the mill or vacancy tests, where qualified spend is under roughly $3 million, or on a non-income-producing property in a tier three county. Between those poles it is a modelling exercise — and it must happen before the eligibility certification is filed.

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North Carolina Tax Credit FAQ

Does North Carolina still have a mill rehabilitation tax credit?

Yes. Article 3H was reenacted by S.L. 2021-180 Section 42.7, signed November 18, 2021, retroactive to projects whose eligibility application was submitted on or after January 1, 2015. The old January 1, 2015 application deadline no longer exists. The current constraint is that the project must be completed and placed in service before January 1, 2030.

How much is the North Carolina mill credit?

40% of qualified rehabilitation expenditures for an income-producing rehabilitation in a development tier one or two county, or 30% in a tier three county. Non-income-producing rehabilitations receive 40% in tier one and two counties only. Minimum spend is $3 million and there is no per-project dollar cap.

Can I claim both the mill credit and the historic credit?

No. G.S. 105-129.74 bars claiming a credit under Article 3L with respect to the same activity for which the Article 3H mill credit is claimed. You elect one, and the election should be modelled before the eligibility certification is filed.

Do the NC state credits stack with the federal historic credit?

Yes. Both state programs are designed to sit on top of the 20% federal credit — the Article 3H income-producing credit actually requires the federal Section 47 credit as a condition.

What are development Tier 1 and Tier 2 counties?

North Carolina ranks all 100 counties annually by economic distress. Tier 1 is the most distressed. Tier 1 and 2 counties cover most of the state's small-town mill inventory, and for the mill credit the tier is locked as of the eligibility certification date.

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Charlotte Is Home. NC Credits Are Local Knowledge.

From SHPO relationships to county tier maps to the 3H-versus-3L election, we work these credits from inside the state.