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Provisional Assessment Under Customs: Section 18 and the Finalisation of Provisional Assessment Regulations, 2025

The proper officer may assess provisionally in four cases listed in section 18(1), on security for the possible deficiency. Under the 2025 Regulations the officer must tell the...

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August 26, 2026
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Last updated: August 2026Verified against: Government sources

Provisional assessment lets goods be cleared on a provisional duty figure, against security, when the final figure cannot yet be fixed. The power is in section 18 of the Customs Act, 1962. The manner and the time limits for finalising it are now in the Customs (Finalisation of Provisional Assessment) Regulations, 2025, made by Notification No. 55/2025-Customs (N.T.) of 12 September 2025 in supersession of the 2018 Regulations, and in force from their publication in the Official Gazette. If a provisional assessment has been pending for long or your security is locked up, our legal consultation service can help plan the finalisation.

When provisional assessment is allowed: section 18(1)

ClauseSituation
(a)The importer or exporter cannot self-assess under section 17(1) and asks the proper officer in writing to assess
(b)The proper officer deems it necessary to send the goods for a chemical or other test
(c)All documents and full information are in, but the proper officer deems further enquiry necessary
(d)Necessary documents or information have not been furnished and the proper officer deems further enquiry necessary

The importer or exporter furnishes such security as the proper officer deems fit for the deficiency, if any, between the final and provisional duty. Our article on section 18 provisional assessment covers the section clause by clause.

What changed in 2025

The Finance Act, 2025 (assent 29 March 2025) inserted section 18(1B), which requires the provisional assessment to be finalised within two years, extendable by one year for sufficient cause, and section 18(1C), which postpones the start of that period in five situations. The 2025 Regulations then replaced the 2018 Regulations to fit those changes. Regulation 3 applies them to every provisional assessment pending on the date they came into force as well as to new ones, and each bill of entry or shipping bill assessed provisionally is a separate case.

The timeline under the 2025 Regulations

StepRegulationTime as printed
Officer tells the importer or exporter, in writing, the specific documents or information needed (cases where they were not produced at assessment)4(1)Within fifteen days of provisional assessment
Importer or exporter provides them4(2)Within two months of the requisition
Further time by the proper officer, for reasons recorded4(2), first provisoUp to two more months
Additional time by a superior officer on request4(2), second and third provisosAs deemed fit, but not beyond fourteen months from provisional assessment
Enquiry completed and report sent to the proper officer (enquiry cases)5(1)Within fourteen months of provisional assessment
Officer finalises8(1)Within three months of receipt of documents (or expiry of time) or conclusion of enquiry; a superior officer may allow two months at a time
Outer limit8(1), second proviso; s.18(1B)Two years from provisional assessment
Extension of the outer limit11; s.18(1B) first provisoOne more year, by the Commissioner, for sufficient cause and reasons recorded

When everything has been submitted, the importer or exporter should tell the proper officer so in writing (regulation 4(3)). If the documents do not come in within the time allowed, the officer finalises on the documents and information on record.

Pending cases. For a provisional assessment pending on 29 March 2025, the periods for documents or enquiry under regulations 4 and 5, and the two years under regulation 8, run from 29 March 2025 (regulations 6 and 8(1), third proviso).

When the clock waits. Where finalisation is held up because information is being sought abroad through a legal process, a similar appeal is pending before the Tribunal, a High Court or the Supreme Court, a stay order is in force, the Board has directed similar matters to be kept pending, or a settlement application is pending, the officer informs the importer or exporter, and the two years run from the date the reason ceases (regulation 8(2), mirroring section 18(1C)).

Paying during the pendency: regulation 7

The importer or exporter may pay any amount electronically against the bill of entry or shipping bill on its own ascertainment while the provisional assessment is pending. It is adjusted against the duty finally assessed. Interest under section 18(3), at the rate fixed under section 28AA, still applies to the amount found payable on final assessment.

Example. Orion Tiles Pvt Ltd imports glaze mixtures and the officer sends samples for testing under clause (b). Orion expects a higher classification and pays the estimated difference electronically under regulation 7. When the test report arrives the officer finalises within three months, and the payment is adjusted against the duty finally assessed. The proviso to regulation 7 still makes Orion liable to interest under section 18(3) consequent to the final assessment, so it keeps the payment challan with the case file.

Finalisation and closure: regulations 9 and 10

  • If the final assessment differs from the provisional one, the officer passes a speaking order following natural justice (regulation 9(2)).
  • If it confirms the provisional assessment, the officer finalises after ascertaining the importer's or exporter's acceptance on record, and informs them of the date (regulation 9(3)).
  • If more duty is due, the bill of entry or shipping bill may be returned for payment, with interest under section 18 (regulation 9(4)).
  • On confirmation, full payment of duty and interest, or a bond for the excess on warehoused goods, the bond taken at provisional assessment is cancelled or recredited and the security returned if no dues are pending (regulation 10(1)).
  • Dues unpaid for more than ninety days after they attain finality are adjusted from the security or recovered under section 142 (regulation 10(2)).
  • A refund is processed under section 18(4) and (5) (regulation 10(3)); interest under section 27A runs if it is not refunded within three months of final assessment.

A contravention of the Regulations attracts a penalty up to the amount in section 158(2)(ii) of the Act (regulation 12).

Common mistakes

  • Citing the 2018 Regulations. They were superseded by Notification No. 55/2025-Customs (N.T.).
  • Ignoring the fifteen-day letter. The two-month clock for documents starts from the requisition.
  • Not telling the officer that submission is complete. Regulation 4(3) asks for that intimation; it helps fix the start of the three months.
  • Leaving security idle after finalisation. Ask for cancellation or recredit of the bond under regulation 10(1).

Need help with a provisional assessment?

Old provisional assessments now have a two-year outer limit, and pending cases count from 29 March 2025. Our legal consultation team can map your open bills of entry against those dates and prepare the replies.

Key takeaways

  • Section 18 gives the power; the 2025 Regulations (Notification No. 55/2025-Customs (N.T.)) give the manner and time limits.
  • Documents: requisition within fifteen days, reply within two months, extensions capped at fourteen months from provisional assessment.
  • Finalisation within three months of documents or enquiry, and within two years of provisional assessment, extendable by one year.
  • Cases pending on 29 March 2025 are counted from that date.
  • On finalisation the bond is cancelled or recredited and security returned if nothing is due.

Read next

Disclaimer: Based on section 18 of the Customs Act, 1962 as amended by the Finance Act, 2025 and on the Customs (Finalisation of Provisional Assessment) Regulations, 2025 (Notification No. 55/2025-Customs (N.T.), 12 September 2025, scanned copy), as consulted on 3 October 2026. Regulation 5(2) of the scanned copy refers to the time "prescribed under regulation 2", which appears to mean regulation 4; check the official text. This article is general information, not legal advice; check the official text before acting.

Quick recapKey facts & short answers

Key Facts About Provisional Assessment

  • Applies in: All states across India, under the relevant central law.
  • Mode: Mostly online via the official government portal.
  • Typical timeline: Ranges from a few days to a few weeks depending on the case.
  • Non-compliance: May attract penalties, interest or late fees.
  • Expert help: TaxClue completes the entire process end to end for you.

Are the 2018 provisional assessment regulations still in force?

No. The Customs (Finalisation of Provisional Assessment) Regulations, 2025 superseded them, except as respects things done or omitted before the supersession.

How long can a customs provisional assessment remain open?

Two years from the date of provisional assessment, extendable by one year for sufficient cause (section 18(1B); regulations 8 and 11). The period starts later where one of the five reasons in regulation 8(2) applies.

A correct code on the shipping bill is worth more than a correction request afterwards.

— TaxClue Trade & FEMA Desk

Provisional Assessment: a key compliance topic in Indian tax and corporate law that businesses and individuals must understand to remain compliant.

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Disclaimer: This article is for general informational purposes only and does not constitute professional tax, legal or financial advice. Laws, rates and due dates change and can vary by individual case — always verify with the relevant government source (e.g. mca.gov.in, incometax.gov.in) or consult a qualified professional before acting. TaxClue accepts no liability for decisions taken based on this content.

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Questions, answered

Short, direct answers to the 6 questions readers ask most on this topic.

No. The Customs (Finalisation of Provisional Assessment) Regulations, 2025 superseded them, except as respects things done or omitted before the supersession.

Two years from the date of provisional assessment, extendable by one year for sufficient cause (section 18(1B); regulations 8 and 11). The period starts later where one of the five reasons in regulation 8(2) applies.

Two months from the requisition, extendable by two months by the proper officer, and further by a superior officer, but not beyond fourteen months from the provisional assessment (regulation 4(2)).

For assessments pending on 29 March 2025, the time limits run from that date (regulations 6 and 8(1)).

Yes. Regulation 7 allows electronic payment on your own ascertainment against the bill of entry or shipping bill, adjusted against the final duty.

When the final assessment confirms the provisional one, or the duty and interest are paid in full, or a bond is executed for warehoused goods, and no dues are pending (regulation 10(1)).