Invoices are the trigger for time of supply. When an invoice is issued late or amended, the time of supply may shift, leading to interest and penalty obligations. Businesses must understand the due date for invoices and the effect of amendments.
Invoice Due Dates
Under Section 31 of the CGST Act:
- Goods: Tax invoice must be issued before or at the time of removal of goods (where movement involved), or at the time of delivery to the recipient (where no movement). In practice, the invoice must be issued not later than the date of removal/delivery.
- Services: Tax invoice must be issued within 30 days from the date of supply of service. For banking and insurance companies, 45 days.
The "last date on which the supplier is required to issue an invoice" becomes relevant for time of supply if the invoice is issued late.
Effect of Delayed Invoice on Time of Supply
For forward charge supplies:
- If the invoice is issued within the due date, time of supply is the earlier of invoice date and payment date.
- If the invoice is issued after the due date, the time of supply is the earlier of the due date of invoice and the payment date.
This means a late invoice does not postpone tax liability. The liability is determined as if the invoice was issued on the last day it was required.
Example
Service provided on 10 May. Invoice due date: 9 June (30 days). Invoice actually issued on 20 June. Payment received on 25 June.
Time of supply = earlier of due date (9 June) and payment (25 June) = 9 June. GST must be reported in June return, and interest may apply if tax is paid after the due date of the return.
Amended Invoices
An amended invoice or revised invoice is issued to correct errors, update rates, or modify values. Under Section 31, a revised invoice may be issued for supplies made between the date of registration and the date of issue of registration certificate.
For other errors, debit notes and credit notes are used, not revised invoices.
Time of Supply for Amended Invoices
When an amended invoice changes the taxable value or tax amount:
- The time of supply of the original supply does not change.
- The increase or decrease in value is accounted for through a debit note or credit note.
- The time of supply for the debit note or credit note is the date of issue of the note, and it is reported in the return for the period of issue.
Debit Note
A debit note increases the taxable value or tax. The supplier issues it under Section 34(3). The time of supply for the additional tax is the date of issue of the debit note, and the supplier must report it in GSTR-1 and pay tax in GSTR-3B for that period.
Credit Note
A credit note decreases the taxable value or tax. The supplier can adjust the output tax liability only if the credit note is declared in GSTR-1 and the recipient reduces ITC. The time of supply for the reduction is the date of issue.
Interest and Penalty for Delayed Invoice
If an invoice is issued late, the supplier may be liable to pay interest under Section 50 if the tax is paid after the due date of the return for the period in which the time of supply falls. For example, if time of supply is 9 June and GSTR-3B for June is due 20 July, but the supplier pays the tax in August due to late invoice, interest runs from 21 July.
Late filing of GSTR-1 also attracts late fees under Section 47.
Practical Compliance Steps
- Set invoice due date reminders for goods and services.
- Issue invoices on or before the statutory due dates.
- If a late invoice is discovered, determine the correct time of supply and pay interest if required.
- Use debit/credit notes for any subsequent adjustments.
- Reconcile invoice dates with GSTR-1 and GSTR-3B.
How Anuj Desai & Associates Can Help
We help businesses manage invoice timelines, correct delayed invoice issues, issue debit/credit notes and avoid interest and penalties.
Contact Anuj Desai & Associates
Email: office@anujdesaiassociates.com
Phone: 9619456656
Website: https://anujdesaiassociates.com
LinkedIn: linkedin.com/in/ca-anuj-desai-122547230