CBO determines #budgetdeal cuts deficits by $1.5 trillion over a decade. https://www.cbo.gov/publication/59225
CBO’s Estimate of the Budgetary Effects of H.R. 3746, the Fiscal Responsibility Act of 2023

As posted on the website of the House Committee on Rules on May 28, 2023

Congressional Budget Office
@w7voa so like 1 year of Trump tax cuts huh
@w7voa How much would the deficit change if, instead of this package, they had simply rolled back Trump's tax "cut".