The U.S. IRS has published the final Form 8991 - Tax on Base Erosion Payments of Taxpayers with Substantial Gross Receipts and the form instructions. Form 8991 is used to determine an applicable taxpayer’s tax on its base erosion minimum tax (BEAT) amount for the year under section 59A as introduced by the Tax Cuts and Jobs Act (TCJA). The BEAT rules first apply in respect of tax years beginning after 31 December 2017.