GST Rate Changes: A Transaction Cut-off Working for Accounts

An order, invoice and payment fall on three different dates around a notified rate change. The useful result is a working that explains the facts, the calculation or classification, and the evidence behind the conclusion. This guide shows how to prepare that working and where a reviewer should investigate before accepting the result.

Scope and applicable period

Indian GST; apply the law, notification and return version for the transaction’s own period. The worked figures are illustrative, not a declaration of a newly notified rate.

Verification date: 11 October 2026. Figures and rates identified as assumptions are teaching examples; apply the stated conditions and the actual facts to a real assignment.

The key principle

For a notified change in GST rate, Section 14 uses the relationship between supply, invoice and payment dates. The Council meeting date is not the operative rate-change date. Identify the notified effective date and then apply the correct date combination. Keep a separate review for advances, continuous supplies, debit/credit notes and any transitional provisions instead of selecting a rate from invoice date alone.

Worked example

Where supply occurs before the change but both invoice and payment occur after it, the relevant time-of-supply rule points to the earlier of invoice or payment. For this illustrative timeline that is 3 November. Reverse or mixed combinations can produce another outcome, so retain all three dates. No actual GST rate is asserted in this example. Update the item master only after the notification and transaction tests are understood; then test a transaction on each side of the cut-off.

A practical sequence

Read the notified rate entry and effective date, then create a cut-off list of transactions spanning that date. Capture supply, invoice and payment dates separately.

Apply section 14 to the facts instead of selecting the rate from the invoice date alone. Update the product master only after confirming classification.

Review invoices and credit notes generated around the change, with a documented reason for any adjustment to previously recorded liability.

Important distinction

For the illustrated before-change supply with both invoice and payment after the change, section 14 points to the earlier of those two later dates, subject to the statutory payment-date provisions. The example date is hypothetical; it must not appear in a client communication as an actual announced commencement.

Keep transaction facts and return treatment separate

GST work involves several linked questions: what was supplied, which registration is involved, when liability arises, how it is valued and whether credit is available. A correct accounting entry does not answer all of them. Build the working at invoice level wherever practical, with transaction dates and document references. Reconcile values and tax separately, including amendments and reversals. When a rule or rate changes, use the notified effective date and conditions for the actual transaction; a Council recommendation or a software master update is not, by itself, the legal commencement of the change.

Evidence checklist

Keep the following records linked to the same entity, period and working version. Identify missing items explicitly; a checked box should mean the document was examined and supports the stated conclusion.

• Notification and exact effective date
• Supply/delivery or performance evidence
• Invoice and payment dates
• Order and advance records
• Item-master change and exception review

Common mistakes and how to avoid them

• Using the Council announcement as commencement. Compare the conclusion with the notification and exact effective date and resolve any conflicting facts.
• Checking only the invoice date. Trace the affected item to the invoice and payment dates before finalising the working.
• Applying the changed master to all old orders automatically. Use the item-master change and exception review to make the final position and remaining exceptions clear.

Before you finalise

Recheck the example’s assumptions against the actual assignment, resolve the identified exceptions and make the final figure or conclusion traceable to its source. Preserve the reviewed version and the reason for material changes. For this task, the item-master change and exception review should agree with the conclusion presented to the client, reviewer or authority.

Frequently asked question

Is invoice date always the rate-selection date? No. Section 14 requires the applicable supply, invoice and payment combination to be examined.

Sources and further reading

• CBIC — CGST Act section 14, change in rate
• CGST Act, 2017 — India Code

Related guide: 57th gst council meeting october 2026 impact applicability.