Notice 2026-46, page 182.

This notice provides the inflation adjustment factor for the section 43 enhanced oil recovery credit taxable years beginning in calendar year 2026. The inflation adjustment factor is used for determining the phase-out amount, if any, of the credit. The inflation adjustment factor is a fraction where the numerator is the GNP implicit price deflator for the preceding calendar year and the denominator is the GNP implicit price deflator for 1990. Section 43(b)(1) phases out the credit by an amount which bears the same ratio to the credit as the amount by which the reference price for the preceding calendar year exceeds the inflation adjusted $28, bears to $6. The Section 43 credit is partially phased out for the 2026 calendar year.