15 March 2018
A registered person supplying taxable goods are required to issue an invoice before or at the time of remove or delivery but in any case invoice issue after such due date than recipient can take credit or not.
30 October 2026
A late invoice by itself does not bar ITC; under current law the limit is 30 November following the end of the FY to which the invoice relates (Sec 16(4)), and the invoice must appear in your GSTR-2B, while the supplier bears interest or penalty for issuing it late.