What does definition 90 regulate?

It regulates principal. Read the exact text, conditions, exceptions and transaction date together.

Which subordinate law should be checked?

No direct CGST Rule has been certified in this phase. Notifications, circulars, forms and the corresponding SGST/UTGST layer may also apply.

What evidence should be retained?

Preserve the contract or transaction record, invoice or form, portal acknowledgement, payment/ledger evidence, correspondence, legal working and the official source version used.

Can portal behaviour override the statute?

No. Portal functionality is operational evidence; legal entitlement and liability remain controlled by the Act, Rules, notifications and binding decisions.

Definition 90 - Principal

Chapter I - Preliminary

ACTIVEOFFICIAL_TEXT_CAPTUREDindex,follow

Source control: The text/status on this page is tied to the official source gateway and the Phase 1 legal-review register. Open official source.

Finin2min Summary - Definition in 2 Minutes

The predominant element of a composite supply to which the other elements are ancillary. PRACTICAL EXAMPLE A naturally bundled transport-and-insurance package is predominantly transport; insurance is ancillary. Transport is the principal supply if facts support the ordinary-course bundle.

Exact operative text

(90) “principal supply” means the supply of goods or services which constitutes the predominant element of a composite supply and to which any other supply forming part of that composite supply is ancillary;

Paragraph-wise decode

Section-Rule-Form-Notification bridge

No direct Rule certified in Phase 1. Check notifications, circulars, forms and corresponding State law.

The mapping is a legal concordance, not a round-robin related-link list. It is limited to instruments certified in this phase.

Practical example

Apply the defined term to the transaction facts before moving to the charging, valuation, credit or procedural provision.

Professional alert

Definitions do not by themselves create a tax charge, exemption, credit or filing obligation.

Implementation checklist

Fix the transaction, taxable period and jurisdiction.
Read every subsection, proviso, explanation and omission marker.
Open the mapped Rule, form, notification and circular.
Test State/UT variation and portal version.
Preserve evidence, approvals, working papers and acknowledgements.
Record the conclusion, assumptions, source date and reviewer.

Evidence and retention checklist

Contract, purchase order, invoice or underlying transaction document.
Registration, return, ledger, challan and portal acknowledgement.
Official Act/Rule/notification version used and effective date.
Internal tax position paper, computation and management approval.
Correspondence, notices, replies, orders and appeal papers where applicable.

Practical Q&A

What does definition 90 regulate?: It regulates principal. Read the exact text, conditions, exceptions and transaction date together.
Which subordinate law should be checked?: No direct CGST Rule has been certified in this phase. Notifications, circulars, forms and the corresponding SGST/UTGST layer may also apply.
What evidence should be retained?: Preserve the contract or transaction record, invoice or form, portal acknowledgement, payment/ledger evidence, correspondence, legal working and the official source version used.
Can portal behaviour override the statute?: No. Portal functionality is operational evidence; legal entitlement and liability remain controlled by the Act, Rules, notifications and binding decisions.

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