Is GST required to be paid on additional interest charged in case of default in instalment payment by the customer?
As per Section 15(2) of CGST Act, 2017, the value of supply includes, inter alia, interest for delayed payment of any consideration for any supply.
Additional Interest charged for default in payment of instalment in respect of any supply, which is subject to GST, will be includible in the value of such supply and therefore would be liable to GST.
Q 45 of GST FAQs on Financial Services Sector published by CBIC