Final regulations on Additional Guidance Regarding Limitation on Deduction for Business Interest Expense (TD 9943) from the U.S. IRS and Treasury were published in the Federal Register on 19 January 2021. The regulations are effective on 13 January 2021 and generally apply to taxable years beginning on or after 22 March 2021. However, rules may be applied for taxable periods beginning on or after 31 December 2017, provided that they are applied in their entirety and in a consistent manner to…