One month after the Authority of Advance Ruling (AAR) ruled that back office support services qualify as “intermediary” support services and not exports, officers of the indirect tax department have started issuing preliminary notices to captive units of multinationals and Indian companies exporting offshore support services.AAR’s directive meant several back offices of multinationals and Indian companies providing offshore support services to foreign companies now face 18% GST liability. The AAR held that some services provided by BPO may qualify as intermediary service and therefore, may not qualify as export service.