When the GST Rate Is a Mystery: A Practical Guide to Provisional Assessment Under Section 60 (CGST)
GST is built on self-assessment-you identify the correct classification, value, and rate, raise the invoice, pay tax, file returns, and move on. But real life loves exceptions.
Sometimes you genuinely cannot determine either:
the value of a supply (because valuation is tangled), or
the applicable GST rate (because classification or rate entry is unclear).
That's exactly where Section 60 of the CGST Act steps in with a safety valve called Provisional Assessment. It lets you pay GST on a provisional basis with the department's permission, and finalize later-without gambling your compliance on guesswork.
This article breaks down how provisional assessment works, when to use it, the forms, the timelines, the bond + bank guarantee mechanics, and what happens at finalization.
1) What is a Provisional Assessment under GST?
Provisional assessment is a taxpayer-initiated mechanism. If you are unable to determine the correct value or rate, you can request the proper officer to allow tax payment provisionally, at a value/rate specified by the officer.
It's not a loophole to "pay later." It's a structured process with:
a formal application,
officer's order,
a bond for the differential tax exposure,
security (bank guarantee), and
a time-bound final assessment.
2) The Legal Backbone: Section 60 + Rule 98
Section 60 (CGST Act): the core rules
Section 60 lays down five key pillars:
1. Eligibility trigger: inability to determine value or rate.
2. Officer must pass order within 90 days from receipt of request.
3. Bond + security required to cover the difference between final tax and provisional tax.
4. Final assessment within 6 months, extendable (6 months by JC/AC; further up to 4 years by Commissioner).
5. Interest on short-payment and refund interest if excess paid.
Rule 98 (CGST Rules): the procedure + forms
The operational procedure is largely captured in Rule 98, including the standard ASMT forms and the 25% security cap.
3) When should you consider Provisional Assessment?
Use Section 60 when uncertainty is real, documentable, and defensible-not when you simply "prefer not to decide." Common practical triggers:
A) Rate / classification uncertainty
New product with unclear HSN (multiple plausible headings).
Borderline cases (e.g., "food preparation" vs "nutraceutical", "cosmetic" vs "medicated").
Composite vs mixed supply confusion affecting rate.
Notification entry ambiguity where interpretations conflict.
B) Valuation uncertainty
Related party supplies where valuation rules interplay is complex.
Discounts/incentives/rebates with conditional structures.
Reimbursements, third-party payments, bundled charges.
Imports/exports linked supplies where value components are disputed (in domestic GST context).
If you can demonstrate:
"I cannot accurately determine value/rate today, and here are the reasons + documents," Section 60 is a strong compliance shield.
4) The Step-by-Step Process (with Forms)
Here's how it works in the real world.
Step 1: Application by taxpayer - FORM GST ASMT-01
You apply electronically on the portal with supporting documents and reasons for provisional payment.
What to attach (best practice):
Detailed note explaining the ambiguity (rate/value).
Product literature, contracts, invoices, price build-up.
Relevant notifications, tariff headings, explanatory notes.
Prior rulings/departmental clarifications (if any).
Your proposed view (what rate/value you believe is correct and why).
Step 2: Officer may seek clarification - ASMT-02 / ASMT-03
The proper officer can issue a notice seeking additional info or personal appearance (ASMT-02). You respond in ASMT-03.
Step 3: Officer's provisional order - FORM GST ASMT-04
The officer must pass an order within 90 days of receiving your request (statutory requirement).
The order in ASMT-04 will either:
reject the request (with reasons), or
allow provisional assessment and specify:
○ the provisional rate/value (or both), and
○ the bond amount, and
○ the security amount (capped).
Step 4: Execute bond + furnish security - ASMT-05 (Bond) + Bank Guarantee
Once allowed, you must execute a bond in ASMT-05 and provide security (bank guarantee).
The famous "25% rule"
Security (BG) cannot exceed 25% of the amount covered under the bond, as determined in the order.
Practical meaning:
If the officer estimates the potential differential tax exposure at Rs.10,00,000, your bond may cover that Rs.10,00,000 exposure, and BG may be required up to Rs.2,50,000 (subject to officer's determination).
5) How do you invoice and pay tax during provisional assessment?
Once provisional assessment is permitted:
You continue raising tax invoices and pay GST using the provisional rate/value specified in ASMT-04.
You report supplies in returns normally (GSTR-1 / GSTR-3B), but your internal file should clearly mark the transaction series as "under provisional assessment."
Tip: Create a separate invoice series or tagging in ERP-because when finalization happens, you'll want reconciliation to be painless.
6) Finalization: Notice + Final Order
Step 5: Officer issues notice for finalization - ASMT-06
When the department is ready to finalize, the proper officer issues ASMT-06 calling for information/records.
Step 6: Final assessment order - ASMT-07
The officer then passes the final assessment order in ASMT-07, specifying:
the final tax payable, or
the refund due, if any.
7) Timelines: The clock matters
Officer's order to allow provisional payment
Must be issued within 90 days from receipt of your request.
Final assessment order timeline
Must be passed within 6 months from the communication of the provisional order. Extensions:
JC/AC can extend by up to 6 months, and
Commissioner can extend by up to 4 years (reasons must be recorded).
Translation: Provisional assessment is meant to be temporary, but law does allow a long runway if the issue is complex.
8) Interest and Refund: Who pays what?
If final tax is higher than provisional tax
You must pay the differential tax, and interest applies from the first day after the normal due date of tax payment (linked to Section 39 return timelines), at the Section 50(1) rate-even if you pay before the final order.
So "I paid before ASMT-07" does not automatically erase interest. Interest is tied to the original due date concept.
If final tax is lower than provisional tax
You become eligible for refund, and interest on refund is payable as per Section 56 (subject to Section 54 conditions).
9) Release of Bank Guarantee / Security (don't forget this step)
After final order is issued, you can apply for release of the security:
Application: ASMT-08
Officer's release order: ASMT-09, within 7 working days, after ensuring you've paid any amount payable as per final order.
Many taxpayers forget to close this loop-and the BG stays blocked longer than it needs to.
10) Provisional Assessment vs Other "certainty tools"
Before you jump into Section 60, compare options:
A) Advance Ruling
Good for rate/classification certainty prospectively, but may take time and has its own litigation trajectory.
B) Clarifications / circulars / trade notices Helpful when your issue is already clarified publicly.
C) Pay under one view + maintain strong documentation
Sometimes viable when ambiguity is low and you're confident.
D) Provisional assessment (Section 60)
Best when:
uncertainty is genuine and material,
exposure is significant,
you want department's formal approval to pay provisionally,
you need compliance continuity without guesswork.
11) Common mistakes (and how to avoid them)
1. Treating Section 60 like "permission to delay tax" It's not. You still pay tax-just provisionally.
2. Weak application note
If you submit ASMT-01 with generic lines, expect rejection or endless ASMT-02 queries. Draft a strong legal + factual note.
3. Not mapping transactions covered
The officer's order may effectively apply to a particular product/service stream. Keep that scope crystal clear internally.
4. Ignoring interest implications
If final liability increases, interest can pinch. Factor that into pricing and provisioning.
12) A simple illustration (to make it concrete)
Assume you supply a product where rate is disputed: 12% vs 18%.
You apply under Section 60 with reasons.
Officer permits provisional assessment at 12%.
You pay tax at 12% during the period.
On finalization, officer concludes rate is 18%.
You must pay:
differential 6% GST, plus
interest calculated from the normal due dates (return payment timeline), up to actual payment date.
If the conclusion is reversed (final rate lower than provisional), you move into refund route with interest rules.
Closing: Provisional assessment is compliance insurance-use it smartly
Section 60 is one of GST's most practical "calm down, don't gamble" provisions.
It recognizes a reality every serious taxpayer knows: sometimes the correct GST position is not obvious on Day 1. Provisional assessment lets you:
keep invoicing and paying tax,
stay return-compliant,
protect against allegations of deliberate short-payment,
and move to finality through a structured, statutory route.
Disclaimer: The information given in this article is solely for purpose of understanding the law. It is completely based on the interpretation of the author and cannot be constituted as a legal advise, the author of this article and Lawcrux team is not responsible for any legal issues if arises on the basis of the interpretation given above.