The 45Q tax credit is the single most important policy driver for carbon capture projects in the United States. If you are developing a capture project and not modeling 45Q into your economics, you are leaving significant value on the table.
The credit is straightforward in concept but has nuances that matter for project planning. Here is what you need to know.
How 45Q Works
Section 45Q of the Internal Revenue Code provides a per ton tax credit for CO₂ that is captured from an industrial source and either permanently stored underground or utilized in a qualified application. The Inflation Reduction Act of 2022 significantly expanded the credit values and eligibility criteria.
For carbon capture with utilization, which includes selling CO₂ as a commercial product, the credit is $60 per metric ton. For geologic storage it is $85 per ton. These are the base values. Direct air capture gets even higher credits: $130 for storage and $180 for utilization.
Qualification Thresholds
Not every capture project qualifies. There is a minimum annual capture threshold. For industrial facilities, the threshold is 12,500 metric tons of CO₂ per year. For direct air capture facilities, it is 1,000 metric tons. A system producing 35 tons per day would capture roughly 12,775 metric tons per year, just clearing the threshold. Larger systems clear it easily.
The project must begin construction before January 1, 2033 to qualify under the current credit values. Projects that begin construction after that date may see different credit amounts depending on future legislation.
Impact on Project Economics
At $60 per ton for utilization, the 45Q credit adds meaningful revenue to a carbon capture project. A 30 ton per day facility capturing roughly 10,000 metric tons per year generates approximately $600,000 in annual tax credits. On top of product revenue from selling the CO₂, this can reduce payback periods by 1 to 3 years depending on the project.
The credits are available for 12 years from the date the capture equipment is placed in service. That is a long runway of guaranteed value that meaningfully de risks the investment.
Transferability
One of the most important changes from the Inflation Reduction Act is that 45Q credits are now transferable. A project developer that does not have sufficient tax liability to use the credits can sell them to a third party, typically at 90 to 95 cents on the dollar. This opened up carbon capture to a much broader set of developers who previously could not monetize the credits directly.
How We Think About 45Q
At CleanCycleCarbon, we model our projects to be economically viable on product revenue alone. The CO₂ we produce has real market value. Beverage grade product commands premium pricing. The 45Q credit is additional upside that accelerates payback and improves returns, but it is not the foundation of the business case.
That distinction matters. Projects built entirely on tax credit economics are vulnerable to policy changes. Projects built on product revenue with tax credits as a bonus are resilient regardless of what happens in Washington.
