GST Assessments: When Invoked, Liability Determination & Taxpayer Response (with Case Law)

Types of Assessment under GST – When They Are Invoked, How Liability Is Determined, and How Taxpayers Should Respond (with Latest Case Law)

1. Assessment as a compliance–to–enforcement ladder

Under GST, “assessment” is not a single event; it is a continuum of mechanisms through which tax liability is determined, corrected or protected. Sections 59 to 64 of the CGST Act form a compliance‑to‑enforcement ladder, starting with self‑assessment and escalating, only when warranted, to provisional assessment, scrutiny, best‑judgment and finally summary assessment in special cases.

Section 2(11) defines “assessment” to include self‑assessment, re‑assessment, provisional assessment, summary assessment and best‑judgment assessment. In practice, “re‑assessment” happens via rectification of returns and demand proceedings under Sections 73/74, not as a separate code.

A quick map of assessment types is as follows:

For practitioners, three questions are critical at each rung:

1. When is this assessment triggered?

2. How is liability supposed to be determined?

3. How should the taxpayer and consultant respond?

2. Self‑assessment – Section 59 (default mode for all businesses)

2.1 When and how self‑assessment operates

Section 59 mandates that every registered person shall self‑assess tax and furnish a return for each tax period. In practice:

• GSTR‑3B is the core self‑assessment document, reflecting output tax, eligible ITC, RCM liability and net tax payable.
• GSTR‑1 (outward supplies), GSTR‑9 (annual return) and GSTR‑9C (reconciliation) refine and support this self‑assessment over the year.
• Omissions or errors must be rectified in subsequent returns within the time limits in Section 39(9) and related provisions.

Section 75(12) gives legal teeth to self‑assessment: unpaid tax declared in GSTR‑3B can be recovered directly under Section 79, without a separate SCN under Sections 73/74. This is why admitted but unpaid tax is extremely sensitive risk.

2.2 How disputes arise out of self‑assessment

Disputes around self‑assessment generally surface when:

• GSTR‑1 shows outward supplies on which tax is not fully paid in GSTR‑3B.
• ITC claimed in GSTR‑3B is far higher than ITC in GSTR‑2B or appears disproportionate to turnover.
• GST turnover does not reconcile with e‑way bill data, income‑tax returns or audited financials.

The department typically begins with scrutiny under Section 61 or audit under Sections 65/66; if issues remain unresolved, the matter escalates into SCN and adjudication under Sections 73/74.

2.3 Compliance strategy and professional advice

From a practitioner’s standpoint:

• Treat each return as a quasi‑assessment order passed by the taxpayer on himself – once filed, it becomes the starting point for Section 75(12) and Section 79 recovery if unpaid.
• Maintain robust working papers: rate/exemption notes, ITC eligibility memos, reconciliations with books and Form 26AS – these are the first line of defence in scrutiny, audit and later litigation.
• For recurring doubts on classification or valuation (for example, complex works contracts or bundled supplies), consider provisional assessment under Section 60 instead of indefinitely “parking” risk in self‑assessment.

3. Provisional assessment – Section 60 (genuine uncertainty on rate or value)

3.1 When provisional assessment can be invoked

Section 60 applies where the taxable person is unable to determine either the correct value of supply or the correct rate of tax despite reasonable efforts. The taxpayer may request the proper officer in writing to permit payment of tax on a provisional basis. Common fact‑patterns include:

• Ambiguity between 5% / 12% / 18% slabs for composite products or bundled services.
• Complex related‑party pricing, pure‑agent structures, subsidies or discounts affecting value.
• New digital or cross‑border models where classification or place‑of‑supply issues are not settled.

3.2 How liability is determined – process and timelines

Rule 98 read with Section 60 prescribes a detailed procedure:

• Taxpayer files ASMT‑01 with full facts, doubts and legal basis, supported by documents.
• The officer may call for more information and then issue ASMT‑04, either allowing or rejecting provisional assessment and specifying the rate/value to adopt.
• Taxpayer executes a bond in ASMT‑05 with appropriate security (often a bank guarantee up to 25% of the potential differential tax) to cover possible short‑payment and interest.
• Final assessment must be completed within six months from communication of ASMT‑04, extendable for recorded reasons with higher‑level approvals; commentaries note that cumulative extensions can stretch to several years where justified.
• On final assessment (ASMT‑07), if final tax exceeds provisional, differential tax plus interest under Section 50 is payable; if final tax is lower, refund with interest under Section 56 is available from the prescribed relevant date.

3.3 Professional strategy – when and how to use Section 60

Handled correctly, Section 60 is a risk‑management tool rather than a threat:

• Use provisional assessment in high‑value, legally debatable matters; it evidences bona fides and significantly reduces the risk of allegations of fraud or suppression under Section 74.
• Always attach a detailed classification/valuation note to ASMT‑01; that contemporaneous record often becomes crucial evidence at finalisation and in any future appeals.
• Track six‑month and extended deadlines; inordinate and unexplained delay in finalisation can legitimately be questioned through representation or even writ in extreme cases.

4. Scrutiny of returns – Section 61 (early warning and pre‑demand stage)

4.1 When and why scrutiny is conducted

Section 61 empowers the proper officer to scrutinise returns and related particulars to verify their correctness. Scrutiny is usually triggered by risk parameters, for example:

• Abnormally high ITC (for instance, ITC consistently exceeding output tax).
• Significant mismatches between GSTR‑1 and GSTR‑3B or between GSTR‑3B and GSTR‑2B.
• Turnover discrepancies vis‑à‑vis income‑tax data, e‑way bills or financial statements.

Data analytics and cross‑system matching increasingly guide selection of returns for scrutiny.

4.2 Procedure – ASMT‑10, 11 and 12

The usual flow is:

• Officer issues ASMT‑10, pointing out discrepancies and seeking explanation or correction.
• Registered person may accept and correct in the next return with interest/late fee, or furnish a written explanation in ASMT‑11 within 30 days (extendable).
• If the explanation is satisfactory or corrections are made, the officer intimates closure of scrutiny through ASMT‑12.
• If not satisfied, the officer may proceed to audit (Sections 65/66), inspection/search (Section 67), or issue SCN under Sections 73/74.

Scrutiny itself does not determine liability; it is a verification filter before full‑fledged demand.

4.3 Professional handling – how to reply to scrutiny

For consultants, ASMT‑10 is an early warning signal:

• Treat scrutiny notices as high priority; a well‑reasoned ASMT‑11 reply often prevents escalation to SCN.
• Provide reconciliations (GSTR‑1 vs GSTR‑3B vs books; GSTR‑2B vs ITC register) and focused legal explanation on disputed ITC or rate.
• Where the department is correct on facts or law, advise prompt self‑correction; this can keep the case within Section 73 (no fraud) and mitigate interest/penalty exposure.

5. Best‑judgment assessment of non‑filers – Section 62

5.1 When Section 62 is invoked

Section 62 applies where a registered person fails to furnish returns under Section 39 (periodic returns) or Section 45 (final return) even after service of notice under Section 46 (GSTR‑3A). Common pattern:

• Taxpayer stops filing GSTR‑3B for some tax periods.
• System issues GSTR‑3A; the taxpayer still does not file.
• Proper officer proceeds to assess liability to the best of his judgment under Section 62 and issues ASMT‑13.

Section 62 starts with a non‑obstante clause, meaning it operates notwithstanding Sections 73 or 74; it is designed as a quicker ex parte mechanism against non‑filers.

5.2 How tax is determined and the statutory cure

For best‑judgment assessment, the officer uses all available material – past returns, e‑way bills, TDS/TCS data, third‑party information – to estimate turnover and compute tax, interest and late fee in ASMT‑13.

Crucially, Section 62(2) provides a cure: if the registered person furnishes a valid return within 30 days of service of the assessment order, the ASMT‑13 order is deemed to be withdrawn, though interest and late fee remain payable.

5.3 Latest judicial trend – deemed withdrawal and liberal interpretation

Courts have strengthened this remedial scheme. The Andhra Pradesh High Court in Indubaala Enterprises LLP v. Union of India held that best‑judgment assessments under Section 62 stand deemed withdrawn once the registered dealer files pending returns and pays tax with late fee, even if returns are filed beyond the initially prescribed period, provided the law or notifications allow such belated filing. The Court treated ASMT‑13 orders as non‑existent in law after such compliance and barred further recovery based on them.

Tax‑portal summaries show similar reasoning in other High Courts: where officers do not give reasonable time after GSTR‑3A or ignore valid returns filed within the statutory cure period, best‑judgment orders and subsequent recovery have been quashed.

5.4 Practical guidance for non‑filer clients

For defaulting clients, strategy should be simple:

• Priority is to file all pending GSTR‑3B and related returns; where ASMT‑13 has been served, strive to file within the 30‑day window to trigger statutory deemed withdrawal.
• If ASMT‑13 was passed prematurely (for example, without proper GSTR‑3A or without allowing reasonable time), file returns, submit a representation citing Section 62(2) and relevant case law, and consider writ proceedings if recovery still continues.
• Educate clients that persistent non‑filing invites not only late fee but also best‑judgment assessment, recovery under Section 79, registration cancellation and even prosecution in extreme cases.

6. Assessment of unregistered persons – Section 63

6.1 When Section 63 applies

Section 63 deals with persons who:

• Are liable to registration but have failed to obtain registration; or
• Whose registration has been cancelled, but who still have outstanding tax liability.

It is distinct from Section 62, which presupposes an existing registration.

In Arupa Nanda Dhal v. Additional Commissioner of State Tax (Orissa High Court, 2024), the Court set aside an assessment under Section 63 because the assessee was in fact already registered from 01.07.2017. Since the foundational requirement – “failure to obtain registration” – was absent, invoking Section 63 was treated as a jurisdictional error and the order was quashed.

6.2 How best‑judgment assessment is made under Section 63

The procedure generally follows this sequence:

• Officer gathers material – inspection reports, third‑party statements, income‑tax and bank data, etc.
• A notice in ASMT‑14 is issued, explaining the factual basis and proposed demand and granting opportunity of being heard.
• After considering reply and evidence, final assessment order is passed in ASMT‑15, determining tax, interest and often penalty.
• Thereafter, normal recovery under Section 79 and, if needed, provisional attachment under Section 83 may follow.

6.3 Compliance and defence strategy

For professionals advising potential Section 63 targets:

• For small businesses that inadvertently crossed thresholds or misread exemption entries, encourage early voluntary registration and disclosure; this often softens the department’s stance on penalty and wilful suppression.
• In ongoing Section 63 proceedings, challenge inflated turnover estimates using audited financials, purchase/sales registers and bank reconciliations; stress that best‑judgment must still be reasonable and evidence‑based.
• Always test jurisdiction: if registration actually exists for the relevant period, or if the same demand is already covered by proceedings under Sections 73/74, rely on the logic of Arupa Nanda Dhal to contest mis‑invocation of Section 63.

7. Summary assessment – Section 64 (extraordinary power for urgent revenue risk)

7.1 When summary assessment may be triggered

Section 64 allows summary assessment where the proper officer:

• Has evidence that a person is liable to pay tax; and
• Believes that delay in assessment is likely to adversely affect the interest of revenue.

Prior approval of the Additional/Joint Commissioner is mandatory. Commentary illustrates typical scenarios:

• Large consignments intercepted in transit indicating unaccounted supplies and imminent risk of dissipation of goods or sale proceeds.
• Seizure of documents showing substantial undisclosed turnover where the taxable person is winding up or rapidly transferring assets.

7.2 How liability is determined and remedial path

In summary assessment, the officer uses available evidence (seized documents, transport records, statements) to pass a direct order fixing tax liability, often faster than the usual SCN and adjudication route.

However, Section 64(2) provides a key safeguard: the person assessed may apply to the Additional/Joint Commissioner to withdraw the summary order if it is erroneous; if withdrawn, normal demand proceedings under Sections 73/74 have to follow.

The Supreme Court in Radha Krishan Industries v. State of H.P. (delivered in the context of provisional attachment under Section 83, which often rides on pending assessments) described such drastic GST powers as “draconian” and insisted on tangible material, necessity and proportionality. High Courts rely on this reasoning while examining whether summary assessment under Section 64 has been misused as a shortcut to bypass ordinary safeguards.

7.3 How to respond to summary assessment

When confronted with a Section 64 order, professionals should:

• Examine whether statutory pre‑conditions (strong evidence, genuine risk to revenue, AC/JC approval) are actually met and recorded.
• Use the Section 64(2) remedy promptly, pointing out errors in facts, law or quantum; if relief is denied, writ petitions have succeeded where the “urgency” test and proportionality were not satisfied.
• Prepare simultaneously for regular proceedings under Sections 73/74 by marshalling full factual and legal defence, because courts often direct the department to redo assessment under those provisions.

8. Cross‑cutting themes from recent case law

Recent GST decisions across forums yield some common constraints on assessment powers:

• Jurisdictional facts are critical: Arupa Nanda Dhal shows that Section 63 cannot be used where the person is in fact registered; mis‑invocation based on wrong foundational facts is void.
• Remedial provisions must be honoured: the Andhra Pradesh High Court in Indubaala Enterprises held that once returns are filed and tax with late fee is paid, best‑judgment orders under Section 62 stand deemed withdrawn and cannot be used for further recovery.
• Drastic powers demand strict scrutiny: in Radha Krishan Industries, the Supreme Court emphasised that provisional attachment (and by extension other extreme measures like summary assessment) must satisfy tests of necessity, proportionality and due process; mechanical use is impermissible.
• Natural justice and reasoned orders: multiple High Courts have set aside best‑judgment and summary assessments that lacked proper notice, hearing or reasons, and have directed fresh assessment under Sections 73/74 following the full statutory procedure.

These principles are directly useful when advising clients on the sustainability of assessment orders and the advisability of appeal or writ.

9. How professionals should advise clients across assessment types

9.1 Prevention – fortifying self‑assessment

Preventive discipline reduces the need for defensive litigation:

• Implement monthly reconciliations: GSTR‑1 vs GSTR‑3B vs books; GSTR‑2B vs ITC ledger; GST turnover vs financials and income‑tax returns.
• Document all significant judgement calls – rate, exemption, place of supply, composite vs mixed supply, ITC on borderline items – in signed, dated internal notes; these show bona fides and guide future positions.
• In sectors with fluid rate jurisprudence (works contracts, software, healthcare ancillaries, real estate), consider provisional assessment for large exposures instead of ad‑hoc positions.

9.2 Early engagement – scrutiny and provisional assessment

When the first departmental signals arrive:

• On receiving ASMT‑10, respond comprehensively with reconciliations, documents and focused legal submissions; avoid generic replies like “will comply”.
• Where the officer’s interpretation appears correct, advise prompt self‑correction and payment; this can keep the case within Section 73 and reduce penalty risk.
• Use Section 60 strategically in big‑ticket, genuinely debatable issues to frame and control the dispute rather than fighting later under Section 74.

9.3 Damage control – best‑judgment and summary assessments

For more advanced enforcement situations:

• Section 62 (non‑filers): file pending returns at the earliest; if within 30 days of ASMT‑13, rely on statutory deemed withdrawal; even beyond that, supportive judicial precedents such as Indubaala Enterprises can be invoked for relief in appropriate cases.
• Section 63 (unregistered): carefully verify whether the client truly falls within its scope; if registration actually exists or parallel 73/74 proceedings are running, challenge jurisdiction based on the logic in Arupa Nanda Dhal.
• Section 64 (summary): examine whether evidence and risk to revenue justify bypassing ordinary demand procedures; where AC/JC approval or recorded reasons are weak, seek withdrawal under Section 64(2) and consider writ relying on Radha Krishan Industries and allied High Court decisions.

9.4 Integrating assessment with demand and recovery strategy

Assessment under Sections 59–64 is only one stage; it feeds into:

• Demand proceedings under Sections 73/74 (full SCN, adjudication and appeal hierarchy).
• Recovery under Section 79 once liability crystallises.
• Provisional attachment under Section 83 when proceedings are pending and revenue risk is perceived.

Advisory should therefore cover the entire chain – from how assessment was initiated and conducted, whether statutory pre‑conditions and natural justice were satisfied, to whether subsequent recovery or provisional attachment is legally ripe and proportionate.

Author’s concluding note

The GST assessment framework is designed as a ladder: it starts with trust‑based self‑assessment and escalates only when risk indicators justify departmental intervention. Case law across India is steadily reinforcing two fundamental ideas – that taxpayers must take self‑assessment seriously, and that officers must exercise higher‑tier assessment powers (Sections 62, 63, 64) cautiously, within clear jurisdictional and procedural bounds. For practitioners advising businesses across sectors, the real skill lies in reading where on this ladder a client currently stands, stabilising the situation at the lowest rung possible, and invoking the growing body of jurisprudence whenever the department tries to climb too fast.