Do not decide a GST rate change from an invoice date, a product’s common name, or an old rate chart. First identify the exact goods tariff item or service description, then read the current rate entry and the operative notification, confirm its effective date and conditions, and finally apply section 14 of the Central Goods and Services Tax (CGST) Act to the supply, invoice and payment dates.
This method works for ordinary sales and difficult transition cases. It cannot produce a reliable rate for an unnamed product or service: classification facts, notification wording and transaction dates are all essential.
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What determines whether a GST change applies?
Four linked questions determine the result:
- What exactly was supplied? The legal classification may depend on composition, processing, intended use, packaging or the work actually performed—not merely the marketing name.
- Which rate entry is operative? Use the current goods or services entry and the central tax-rate notification that gives it legal effect, including amendments and clarifications.
- When did the change legally begin? A notification’s issue date and its commencement date may differ. Conditions, exclusions and special implementation dates can also apply.
- What is the time of supply? For a rate change, section 14 of the CGST Act uses the supply date together with invoice issuance and payment timing. Invoice date alone is not a universal answer.
If any of those questions is unresolved, the prudent result is “classification or transition review required,” not a guessed percentage.
Step 1: Describe the actual product or service
Write a factual description before opening a rate table. Preserve the information that could distinguish one tariff entry from another.
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For goods
- Material and composition, including relevant percentages or mixtures.
- Manufacturing, processing or finishing performed before sale.
- Principal function and intended use.
- Form, size, technical characteristics and packaging.
- Whether it is sold alone, as a set, or with an accessory or consumable.
- Any facts that could place it in a chapter, heading, sub-heading or tariff item.
For services
- The work actually performed and the customer’s intended outcome.
- Whether the supply is a single service, a bundled supply or a composite arrangement.
- Ancillary items such as equipment, materials, installation, maintenance or support.
- Where the service is performed and any facts relevant to a special description or exemption condition.
Keep technical sheets, contracts, purchase descriptions, photographs and sample invoices with the classification record. A brand or sales label can be useful evidence, but it does not by itself determine the GST entry.
Step 2: Find the classification and rate entry
Use the official Central Board of Indirect Taxes and Customs (CBIC) GST goods and services rate tables to identify plausible headings or service descriptions. Search by the technical description rather than by a colloquial product name.
Read the complete entry
Do not stop at the percentage displayed beside a heading. Read the heading, sub-heading or service description, explanatory notes, exclusions, provisos, unit or value conditions, and any references to another notification. Two products that sound similar can fall under different entries because of composition or use.
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For services, check whether the description covers the work as supplied or whether a bundled element changes the treatment. For goods, confirm the complete tariff path instead of selecting a chapter from a short online list.
Do not classify an unspecified item by guesswork
An exact rate cannot responsibly be stated for “a machine,” “software services,” “food,” or another broad label. Gather the facts first. If two entries remain plausible, document why and obtain written advice from a qualified GST professional or seek an appropriate ruling route.
Step 3: Locate the operative notification
The rate table is a starting point. Follow its reference to the central tax-rate notification and read the amendments, clarifications and superseding instruments that apply on the transaction date. A council announcement, press release or FAQ can explain policy, but it is not a substitute for the notification that legally changes the rate.
What to record
- Notification number and date.
- The exact schedule, serial number, tariff item or service entry.
- Each amendment or superseding notification consulted.
- Conditions, exclusions, valuation rules and any rate components that are separate from CGST.
- The stated commencement or effective date.
For the 56th GST Council changes, the Ministry of Finance FAQ identified Notification No. 9/2025-Central Tax (Rate), dated 17 September 2025, as the revised CGST goods-rate notification superseding the earlier goods notification. That identification helps you find the instrument; you still must verify that the entry and tax component match your transaction.
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Step 4: Check the effective date and exceptions
Compare the notification’s commencement wording with the date on which the supply, invoice and payment events occurred. The notification date is not automatically the first date on which the new rate applies.
The 56th GST Council material provides a useful illustration. The Ministry of Finance FAQ and the Press Information Bureau described 22 September 2025 as the implementation date for changes to services and most goods. They also identified certain tobacco-related goods for which existing rates and compensation cess continued pending a later notified implementation date. Therefore, “the 22 September change” is not a blanket rule for every product.
Check scope, not just the calendar
- Does the entry cover your exact classification?
- Does the commencement clause apply to your tax component?
- Is a condition, exemption, threshold or valuation rule attached?
- Does a later notification amend, defer or replace the entry?
- Is your product in an expressly delayed category, such as a specified exception?
As of the official material reviewed through 9 October 2026, the 2025 example remains a reference point, not proof that no later amendment exists. Always check the latest official notification for the transaction under review.
Step 5: Apply the section 14 transition rule
Once the classification and effective date are established, determine the time of supply. For a change in the rate of tax, section 14 of the CGST Act takes precedence over the ordinary goods or services time-of-supply provisions.
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The Ministry of Finance’s FAQ-3 on the 56th GST Council decisions, published 18 September 2025, states: As per Section 14 (a)(i) of CGST Act, 2017, in case the goods or services or both have been supplied before the change in rate of tax, and the invoice for the same has been issued after the change in rate of tax, then the time of supply i.e. date of liability to pay tax on such supply will be as follows:
The FAQ then sets out the combinations below.
Use the table only after establishing whether the supply occurred before or after the rate-change date. “Before” and “after” refer to the legally relevant supply event, not simply when an order was placed.
| When the supply occurred | Invoice issued | Payment received | Time of supply under section 14 |
|---|---|---|---|
| Before the change | After the change | After the change | Earlier of the payment-receipt date and invoice date |
| Before the change | Before the change | After the change | Invoice date |
| Before the change | After the change | Before the change | Payment-receipt date |
| After the change | Before the change | After the change | Payment-receipt date |
| After the change | Before the change | Before the change | Earlier of the payment-receipt date and invoice date |
| After the change | After the change | Before the change | Invoice date |
After finding the time of supply, compare it with the notification’s effective date and apply the rate attached to the entry for that point in time. This is why the same classification can require different treatment for two transactions around a change date.
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How to determine the payment date
Section 14 generally defines receipt of payment as the earlier of:
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1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errors- the date the payment is entered in the supplier’s books of account; or
- the date the payment is credited to the supplier’s bank account.
The statutory wording is: For the purposes of this section, ‘the date of receipt of payment’ shall be the date on which the payment is entered in the books of account of the supplier or the date on which the payment is credited to his bank account, whichever is earlier.
This is text from section 14 of the CGST Act, 2017.
Section 14 also contains a proviso for a bank credit occurring more than four working days after the rate-change date. That exception can alter how the payment date is treated, so retain the bank credit record and check the statutory wording rather than relying on a bookkeeping shortcut.
Evidence to retain
- Bank statement or payment gateway settlement showing the credit date.
- Ledger entry showing when the supplier recorded the receipt.
- Advance receipt, remittance advice or other payment reference.
- Invoice issue timestamp and the underlying delivery or performance evidence.
Worked transition examples without assuming a rate
These examples show the decision logic only; they do not assign a percentage to any product or service.
Supply before the change, invoice before, payment after
A service is completed before the effective date. The invoice is issued before that date, but the customer pays afterward. Section 14 places the time of supply on the invoice date in this combination. Check the notification entry applicable on that date.
Supply before the change, invoice after, payment before
Goods are supplied before the effective date. The customer’s payment is received before the change, but the invoice is issued afterward. The payment-receipt date controls under section 14.
Supply after the change, invoice before, payment after
An order is invoiced before the new rate starts, but the goods are supplied after it and payment arrives after it. The payment-receipt date controls in this branch. An early invoice does not automatically preserve the old treatment.
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Both invoice and payment before a post-change supply
If the supply occurs after the change while both invoice and payment occurred before it, section 14 uses the earlier of the invoice date and payment-receipt date. Confirm that the transaction genuinely fits this branch and that any advance-payment rules have been considered.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Goods and services: what to compare
| Decision axis | Goods | Services |
|---|---|---|
| Primary lookup | Chapter, heading, sub-heading or tariff item | Exact service description and applicable classification |
| Facts that often matter | Composition, processing, use, form and packaging | Work performed, bundled elements, location and contractual scope |
| Common error | Choosing a rate from a retail or marketing name | Using a broad label without analysing the actual deliverable |
| Transition test | Supply timing plus invoice and payment dates under section 14 | |
The comparison does not replace classification analysis. It simply shows why a goods lookup and a services lookup require different underlying facts.
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A short audit trail makes a later review faster and exposes missing facts before a return is filed. Keep one dated file for each material classification or rate decision containing:
- The factual product or service description and supporting technical or contractual documents.
- The classification entry considered and the reasoning for selecting it.
- The notification number, date, schedule entry, amendments and effective-date wording.
- Any condition, exclusion, exemption or special valuation provision checked.
- The legally relevant supply date, with delivery, completion or acceptance evidence.
- Invoice issue date and copy of the invoice.
- Payment-booking date, bank-credit date and evidence of any advance.
- Written advice, ruling, internal approval and the date on which the source was rechecked.
Recheck the file when a later notification or clarification is issued, when the product changes, or when the transaction pattern changes from one-time sale to recurring or bundled supply.
Common mistakes and how to correct them
Using an old rate chart
Why it fails: tables can omit amendments, commencement clauses or superseding notifications.
Correction: trace the entry to the operative notification and record its version and date.
Treating a council recommendation as the legal rate
Why it fails: recommendations and FAQs explain policy but do not replace the charging notification.
Correction: use the announcement as a pointer, then read the notification, schedule and conditions.
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Why it fails: section 14 has six principal combinations involving supply, invoice and payment timing.
Correction: collect all three dates and apply the correct branch.
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Ignoring payment evidence
Why it fails: the statutory payment date can be the earlier of a ledger entry and bank credit, subject to the four-working-day proviso.
Correction: retain both records and document which date was used.
Assuming an exception does not apply
Why it fails: implementation can be delayed for a specified category, as the 2025 tobacco-related example demonstrates.
Correction: check the notification’s scope and any later implementation instrument.
Giving a rate for a vague description
Why it fails: classification can change with composition, use, processing or bundled elements.
Correction: obtain the missing facts and escalate uncertain or high-value cases.
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When professional advice is necessary
Consult a qualified GST professional when classification remains disputed, the notification contains conditions or exceptions, the supply date is contested, payment timing involves advances or delayed bank credits, or the tax exposure is material. Provide the professional with the complete rate-change file rather than only a product name and invoice.
This is a general checking method, not a determination of liability for a particular transaction. The latest notification and any subsequent amendment control the final result.
The Bottom Line
To check a GST rate change, match the actual supply to the correct classification, verify the operative notification and effective date, then apply section 14 using the supply, invoice and payment dates. If the classification or timeline is uncertain, do not guess the rate—obtain qualified GST advice and preserve the supporting records.
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