GST law specifies the time by which a registered supplier must issue a tax invoice. Missing these deadlines can create compliance problems.
For supply of goods
If the supply involves movement of goods (delivered from one place to another), the invoice must be issued before or at the time the goods are removed.
If the supply does not involve movement (for example, goods collected from the supplier's premises), the invoice must be issued at or before the time of delivery.
For supply of services
The tax invoice must be issued within 30 days from the date the service is provided. For banking companies and financial institutions, the time limit is extended to 45 days.
For continuous supply of goods or services
For goods: invoice is issued on or before each statement of account or each payment.
For services: invoice is issued on or before the due date of payment if the due date is ascertainable; otherwise, on or before the time the payment is received.
For reverse charge transactions
Where the recipient of goods or services is liable to pay tax under reverse charge, the registered recipient must issue a payment voucher at the time of making payment to the supplier.