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ARTICLE · 15 SEPTEMBER 2026

Section 45Z 2026 Emissions Rate Table And Updated GREET Model Published

The U.S. Department of the Treasury and IRS have released Notice 2026-53, establishing new emissions rate tables for the Section 45Z clean fuel production tax credit and implementing key amendments from the One Big Beautiful Bill Act. The notice introduces distinct emissions rates for transportation fuels derived from animal manure, permits farm-specific alternative fate determinations, and addresses the exclusion of indirect land use change emissions.

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Highlights

  • The U.S. Department of the Treasury and IRS released Notice 2026-53, providing the calendar year 2026 emissions rate table for the Section 45Z clean fuel production tax credit and addressing key amendments made by the One Big Beautiful Bill Act (OBBB).
  • The notice establishes distinct emissions rates for transportation fuels derived from animal manure, permits farm-specific alternative fate determinations and addresses the exclusion of indirect land use change emissions.
  • Taxpayers should carefully evaluate the transition rules for applying OBBB amendments when using prior versions of the 45ZCF-GREET model.

The U.S. Department of the Treasury and IRS issued Notice 2026-53 (the Notice) on September 8, 2026, establishing emissions rates applicable to the Section 45Z clean fuel production tax credit (PTC) for calendar year 2026 and clarifying the application of several amendments made to Section 45Z by the One Big Beautiful Bill Act (OBBB). This Holland & Knight alert

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