In 2016, Ireland introduced a new withholding tax on distributions from Irish regulated funds which invest in Irish real estate (IREFs). The tax is calculated based on a formula set out in section 739L of the Taxes Consolidation Act 1997. The legislation introducing the changes describes the formula as (A x (B/C) - D). Unfortunately, in at least one legislative textbook, the formula is reprinted as (A x ((B-D)/C). This produces a different (and larger) tax liability. Perhaps it is a valuable illustration that in law, sometimes you need to go to the source, in order to find the truth.