The NTEU union, which represents many IRS employees, says that the passage of the new tax bill will add new responsibilities to the already overstretched agency. In addition to the normal preparations for the upcoming tax filing season, the IRS will need to educate taxpayers and business so that they can understand and comply with the new legislation. The union says it is Congress’ responsibility to ensure that they have enough resources to successfully implement the new bill, but years of budget cuts have substantially reduced the agency’s workforce. Since 2010, the IRS has lost more than 20,000 full-time employees, which has led to declines in customer service, fewer audits, and greater security vulnerabilities as a result of outdated technology.
See "Tax Changes Would Burden Already-Strapped IRS, Union Says", Fedweek, December 20, 2017