I see a $1.39 billion reduction of the $80 billion authorized for the IRS in the “Inflation Reduction Act” (”Reduction”, ha ha!!). See page 53 here:
https://thehill.com/wp-content/uploads/sites/2/2023/05/BILLS-118hrPIH-fiscalresponsibility.pdf
The $80 billion:
https://www.kiplinger.com/taxes/605016/inflation-reduction-act-and-taxes
“The Inflation Reduction Act also includes a 1% excise tax on corporate stock buybacks.”
“The Inflation Reduction Act also extends the expanded Affordable Care Act (ACA) program through 2025, so that eligible individuals and families who purchase their health insurance through the federal Health Insurance Marketplace can continue to benefit from lower health care premiums.”
“the Inflation Reduction Act creates a $1 billion incentive program for energy-efficient affordable housing.”
https://www.kiplinger.com/taxes/605016/inflation-reduction-act-and-taxes