The Internal Revenue Service has released Rev. Proc. 2019-44, which contains the inflation adjustments to tax brackets, the federal estate tax exclusion amount, and other numbers for use in 2020.
The inflation adjustments published by the IRS are the same as the inflation adjustments previously calculated following the publication of the Chained Consumer Price Index (C-CPI-U) for August 2019, and published as “Unofficial Inflation Adjustments for 2020.”