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STANDARDS TRACKER |
STANDARDS TRACKER
IRS Notice 2026-53: Section 45Z clean fuel production credit guidance
IRS Notice 2026-53 drops the 2026 emissions rate table and new modeling rules for manure-derived fuels; proposed regs remain under final consideration.
The IRS issued Notice 2026-53 on Sept. 8, 2026, releasing the 2026 emissions rate table used to calculate the Section 45Z Clean Fuel Production Credit. The notice adds technical modeling language for manure-derived fuel pathways - specifically dairy and swine manure - and addresses how producers should account for One Big Beautiful Bill Act changes when using the emissions rate table and allowed models, per the CPA Practice Advisor report.
BY THE NUMBERS
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See below EFFECTIVE |
1 SOURCE TRACKED |
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Sep 16 LAST UPDATED |
IRS ISSUER |
The Section 45Z credit was first established by the Inflation Reduction Act of 2022, replacing prior renewable fuel incentives with a technology-neutral credit. Per the source, the credit applies to clean transportation fuels produced after Dec. 31, 2024, and sold before Jan. 1, 2030, offering up to $1 per gallon or gallon equivalent depending on the fuel's emissions profile. The proposed regulations, issued Feb. 4, 2026, remain under final consideration by IRS and Treasury.
Notice 2026-53 also introduces a safe harbor for producers with clean fuel production in 2025 who used the 45ZCF-GREET model in certain situations, and provides transition rules for feedstocks where an allowed methodology is not yet updated. The DOE is developing corresponding updates to the 45ZCF-GREET model. Poultry and beef manure feedstocks are not yet covered - the source notes they will likely be added in further guidance.
For the close team, the practical pressure point is credit calculation and documentation. The credit amount depends on the produced fuel's lifecycle greenhouse gas emission rate, which means the 2026 emissions rate table is the operative input. Producers claiming the credit must be the actual producer at a qualified facility and must perform substantial chemical processing transforming raw materials to finished fuel - a fact pattern that affects how intercompany arrangements and consolidated-group sales are documented.
The proposed regulations covering credit eligibility rules, emissions rates, and certification and registration requirements remain under final consideration. Until final regulations are published, the combination of Notice 2026-53 and the Feb. 4, 2026 proposed regulations is the operative guidance. The source does not state a finalization date for the proposed regulations.
WHAT TO DO IN THE CLOSE
| Pull Notice 2026-53 and update your 2026 emissions rate table inputs before calculating any Section 45Z credit claims. | |
| Confirm that your facility qualifies as the actual producer performing substantial chemical processing, per the proposed regulations. | |
| Review intercompany and consolidated-group fuel sales to confirm they meet the unrelated-party sale requirements for credit eligibility. | |
| If you produced clean fuel in 2025 using the 45ZCF-GREET model, assess whether the new safe harbor applies to your fact pattern. | |
| Flag poultry and beef manure feedstock pathways as open items; IRS has indicated further guidance is coming but has not stated a date. |
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QUESTIONS THIS ANSWERS
What does IRS Notice 2026-53 change for Section 45Z credit calculations?
It provides the 2026 emissions rate table used to calculate the credit and adds technical modeling language for manure-derived fuel pathways, including dairy and swine manure. It also introduces a safe harbor for 2025 producers using the 45ZCF-GREET model. Proposed regulations remain under final consideration.
Which fuels qualify for the Section 45Z clean fuel production credit?
Per the proposed regulations, eligible fuels include ethanol, biodiesel, renewable diesel, renewable natural gas, and sustainable aviation fuel. The credit applies to fuels produced after Dec. 31, 2024, and sold before Jan. 1, 2030.
Are the Section 45Z proposed regulations final?
No. The proposed regulations issued Feb. 4, 2026 are under final consideration by IRS and Treasury. Notice 2026-53 supplements but does not replace them. The source does not state a finalization date.
SOURCES
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A living page: it is re-read and updated as coverage arrives; last updated Wednesday September 16. Facts come from the linked sources; confirm against the issuer's own text before relying on it.
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