Carbon 45Q credit reform

Summary#

This bill changes the federal tax credit known as the carbon oxide sequestration credit (Section 45Q of the tax code). Its main goal is to treat different ways of storing or using captured carbon dioxide more equally and to set new dollar amounts for the credit. The changes mainly rewrite parts of the credit’s definition, merge some categories, and set specific credit dollar levels and how they will be indexed for inflation.

Key changes:

• Rewrites how “qualified carbon oxide” uses are described, grouping disposal in secure geological storage, use as a tertiary injectant for enhanced oil or gas recovery, and other specified utilizations under the same subsection.
• Removes a separate paragraph that previously treated certain uses differently, consolidating references to a single paragraph.
• Sets the base credit amount at $17 per unit for taxable years beginning in calendar years after 2024 and before 2027 (effectively tax years starting in 2025–2026).
• Indexes the $17 amount for inflation starting in calendar year after 2026 (so indexing begins for 2027 and later).
• Specifies that, in relevant places, $36 should be substituted for $17, effectively creating a higher dollar figure in some parts of the law (the bill text makes this substitution but does not add new descriptive language about every use case).

Effective date: applies to taxable years beginning after December 31, 2024.

What it means for you#

• Businesses that capture carbon (power plants, industrial facilities)

  • May see clearer rules about whether captured carbon used for storage, enhanced recovery, or other uses qualifies for the 45Q credit.
  • The credit amount is explicitly set at $17 (with indexed increases after 2026) for many cases, and a $36 figure is substituted in certain places in the law (the bill text makes this substitution; it is not fully clear from the text which exact claims get the $36 rate).

• Oil and gas companies or operators of enhanced oil recovery (EOR)

  • The bill groups tertiary injectant use (EOR/EGR) with secure geological storage under the same subsection, which could affect how those projects claim credits. It is not fully clear from the text whether EOR projects will receive the $36 level or $17 level in every case.

• Taxpayers and tax preparers

  • The tax code language for claiming 45Q will change; tax professionals will need to follow the revised definitions and dollar amounts when preparing returns and claiming credits.

• Federal agencies (IRS, Treasury)

  • Must interpret and administer the revised 45Q text, update guidance, and change forms and systems to reflect the new wording and amounts.

• General note

  • The bill applies to tax years starting in 2025 and later. It reorganizes definitions more than it creates new programs.

Expenses#

No publicly available information.

Possible fiscal effects (not estimated in the bill text):

• The change in dollar amounts and the $36 substitution could increase or shift federal tax expenditure for the 45Q credit, depending on which uses receive which dollar amount under the revised text.
• Administrative costs for the IRS and Treasury to revise guidance, forms, and systems to reflect the new law.
• Potential compliance costs for businesses and tax preparers to interpret and apply the changed rules.
• Any change in the credit could alter incentives for projects (which could affect future federal revenue indirectly), but the bill text does not include a cost estimate.

Proponents' View#

• The bill appears intended to ensure parity between different ways captured carbon is used (secure storage, use in enhanced recovery, and other utilizations).
• Supporters may argue this creates clearer, more consistent tax treatment across uses of qualified carbon oxide.
• The explicit dollar amounts and the decision to index the base amount for inflation may be presented as providing predictability for project planning and investment decisions.

Opponents' View#

• One concern is the lack of a public fiscal estimate in the bill text, so the net cost to federal revenues is unclear.
• The bill does not clearly state which uses will receive the higher $36 substitution in every case; that ambiguity could lead to disputes and require IRS rulemaking.
• Consolidating categories and removing the prior paragraph could have unintended consequences for certain projects that previously qualified under a different rule; it is unclear whether some projects could lose or gain benefits.
• If the higher dollar figure applies to carbon used as a tertiary injectant for enhanced oil recovery, some may raise concerns that the credit would indirectly subsidize additional oil production; the bill text does not address that policy trade-off.