Central Sales Tax Registration: Procedure, Form A and Required Documents

The Central Sales Tax Act, 1956 (CST Act) governs specified inter-State sales of goods. Since the introduction of Goods and Services Tax (GST) on 1 July 2017, CST registration is relevant primarily to transactions involving goods that remain outside GST. This guide explains the present legal scope, registration conditions, supporting documents, fees and security requirements.

Important: An ordinary inter-State supply of GST-covered goods is generally governed by IGST, not CST. A GST registration does not by itself replace a CST registration where the CST Act continues to apply.

1. Goods covered by CST after GST

Under Section 2(d) of the CST Act, the definition of goods is restricted to petroleum crude, high-speed diesel, motor spirit (petrol), natural gas, aviation turbine fuel and alcoholic liquor for human consumption. CST registration must be considered in relation to transactions in these goods, rather than all inter-State sales.

See the Central Sales Tax Act, 1956 (India Code) and the Central Board of Indirect Taxes and Customs for applicable tax legislation.

2. Who must register under Section 7?

Section 7(1) - Mandatory registration: Every dealer liable to pay CST must apply for registration within the prescribed time to the competent authority in the appropriate State.

Section 7(2) - Optional registration: A dealer liable under the appropriate State sales tax law, or otherwise eligible under the wording of this subsection, may apply even if not independently liable under the CST Act. Eligibility should be evaluated against the remaining taxable goods and current State rules.

Section 7(3) - Certificate: After checking compliance with the Act, rules and any lawful security requirement, the authority grants a certificate specifying the relevant classes of goods for purposes of Section 8(1).

3. CST registration procedure and Form A

Confirm applicability: Identify the goods, inter-State transactions, principal place of business and appropriate State authority.
Prepare Form A: Under the Central Sales Tax (Registration and Turnover) Rules, 1957, application for registration is made in Form A, with prescribed particulars of the business, proprietor, partners or directors, branches and goods.
Attach supporting records: Supply the business, identity, address and transaction documents required by the competent State authority.
Pay the applicable fee: The traditional statutory application fee is Rs. 25; verify the currently accepted payment method and any State-specific processing requirements. The earlier practice of using a court-fee stamp should not be assumed to be mandatory for an online filing.
Comply with scrutiny: Respond to requests for clarification, verification or lawful security under Section 7.
Obtain the certificate: Check the approved classes of goods and business particulars; seek amendment if details change.

4. Documents generally required

The precise checklist varies by State and the applicant's constitution. Commonly requested supporting documents include:

Completed and signed Form A for CST registration.
PAN and proof of constitution, such as proprietorship particulars, partnership deed, incorporation certificate or company constitutional documents.
Proof of principal and additional business premises, including ownership records, rent agreement or other accepted address evidence.
Identity and address proofs of the proprietor, partners, directors and authorised signatory, as applicable.
Authorisation letter, board resolution or power of attorney where the application is filed through a representative.
Bank account details and, where requested, a bank statement or cancelled cheque.
Relevant State VAT registration or licence details, if applicable.
Details of covered goods, places of business and intended inter-State sales or purchases.
Inter-State sale invoice or bill and corresponding delivery challan, where required to demonstrate actual transactions.
Bank statement showing payment received against an inter-State sale, if required during verification.
Evidence of security furnished, if specifically ordered by the authority.

Sales invoices, delivery challans and bank payment records were part of traditional document checklists, but they are not universally required in every application. Newly established businesses should confirm how proposed transactions may be evidenced.

5. Security deposit under Section 7

Section 7(2A) permits the registration authority, for recorded reasons, to require security before issuing registration, including to protect tax recovery and the proper use of statutory forms. Section 7(3A) permits security or additional security after registration, subject to statutory conditions. A fixed security deposit is not automatically payable by every applicant; the amount and permitted form depend on the applicable order, statutory limits and rules.

6. Registration certificate and subsequent obligations

Dealers should verify the goods listed in their registration certificate and maintain appropriate transaction records. Section 8 concerns rates and conditions for inter-State sales, including specified declarations. Section 6A addresses proof for transfers claimed to be otherwise than by sale. Misuse of declarations or false particulars can attract consequences under Sections 10 and 10A.

For further reading, see Section 7 registration of dealers, Section 6 inter-State tax liability, and Section 6A branch transfer proof.

7. CST registration in Delhi

For a business operating in Delhi, verify the current CST/VAT registration process, supporting records and filing facilities through the Department of Trade and Taxes, Government of NCT of Delhi. Procedures may differ for new registrations, amendments, legacy certificates and businesses dealing only in GST-covered products. See also the Delhi VAT registration guide.

Frequently asked questions

Is CST registration required for all inter-State sales?

No. Most GST-covered inter-State supplies fall under the IGST framework. CST remains relevant to goods specified in Section 2(d) of the CST Act.

Which form is used for CST registration?

Form A under the Central Sales Tax (Registration and Turnover) Rules, 1957, subject to the current filing arrangements of the appropriate State.

Is a security deposit compulsory?

No universal fixed deposit applies. Security may be required by a reasoned order under Section 7 and applicable rules.

Legal position reviewed: 6 October 2026. Check subsequent notifications and local administrative instructions before filing.