- E-invoicing and IRN
- Registered businesses above the turnover limit notified under GST (lowered in stages, most recently from August 2023 under Notification 10/2023-Central Tax) must report B2B invoices to an Invoice Registration Portal, which returns an IRN and a signed QR code.
- 30-day reporting limit for e-invoices
- Under a GSTN advisory of November 2024, taxpayers above a set annual aggregate turnover (lowered from the earlier level) cannot report invoices, credit notes or debit notes to the IRP once they are more than 30 days old, from 1 April 2025. GSTN said smaller taxpayers are not restricted for now.
- E-way bill (Part A and Part B)
- Movement of goods above the notified value needs an e-way bill. Part A carries invoice and consignee details. Part B carries the vehicle. Validity depends on distance, and it can be extended if the vehicle is delayed.
- E-way bill time limits from 2025
- Reported changes from January 2025: an e-way bill can be generated only against an invoice or document up to 180 days old, and its total validity, including extensions, is capped at 360 days from generation. Multi-factor login became mandatory for all users on the e-invoice and e-way bill portals by April 2025.
- MSME classification and Udyam
- MSME limits for investment and turnover were revised upward from 1 April 2025, on a combined test. Enterprises register on the Udyam portal and should update the record when their figures change.
- Payment to micro and small suppliers
- Under section 15 of the MSMED Act 2006, a buyer is expected to pay a micro or small supplier within the agreed period, which cannot exceed 45 days, or within 15 days if nothing is agreed. Late payment attracts interest under the Act, and section 43B(h) of the Income-tax Act defers the buyer’s tax deduction for such unpaid amounts.
- Post-sale discounts and dealer schemes
- Discounts given after the sale, such as a target scheme paid by credit note, are treated differently under GST depending on whether they were agreed in advance and linked to specific invoices. The detail is a question for your CA.
- BIS quality control orders
- For products covered by a quality control order, manufacturers need a BIS licence or registration before selling. Several orders, especially for chemicals and polymers, were withdrawn in 2025, so the list keeps changing.
- ISO 9001 and customer audits
- Many OEM and export customers ask for ISO 9001 or a sector standard and audit your records. These are voluntary certifications, not laws, but they decide whether you stay an approved vendor.