On June 1st, the value below which goods can be shipped to Turkey before duties and taxes are assessed (i.e. the deminimus value) was reduced to 0 EU (from 22 EU). This change means that all goods shipping to Turkey are now being assessed.
No action is required by you from a technical standpoint as Pitney Bowes is handling adding tax and duty at checkout. Managing this change process is part of the value that Pitney Bowes brings to all of your international business.