From April 1, 2025, ISD registration is mandatory for businesses distributing input tax credit on services across multiple offices under the same PAN.... ISD full form is International Subscriber Dialing. To know more about ISD ’s history, Popular codes, advantages, and more read here Input Service Distributor is an office of a business that receives invoices for input services and distributes ITC to its branches having same PAN. Learn the ISD full form with examples in telecom, education, & GST. Get clear definitions, tables, and exam-ready insights for students.
