In this month’s update, Elizabeth V. Zanet and Nina Krauthamer report on (i) attacks on cash pooling arrangements as part of earnings-stripping rules under Code §385, (ii) the latest regulations aimed at increasing financial transparency, including adoption of a customer due diligence (“C.D.D.”) final rule, (iii) proposed beneficial ownership legislation, and (iv) new reporting rules for foreign-owned, single member L.L.C.’s that engage in business with the foreign owner; as well as a new wave hiring by the I.R.S. of enforcement officers.