### A. Regular Registered Persons (other than TDS deductor/TCS collector)
Must furnish bank account details on the GST portal:
Within 30 days of grant of registration, OR
Before filing GSTR-1 / using IFF,
Whichever is earlier.
### B. TDS Deductor / TCS Collector / Suo-Motu Registered Person
Must furnish bank account details at the time of submission of registration application itself (during the registration process).
## Consequence of Non-Compliance
Registration is liable to be cancelled under Rule 21(d).
Registration is liable to be suspended under Rule 21A.
Suspension is deemed revoked once Rule 10A is complied with (if registration not already cancelled).
Worked example
### Example 1
Example: Mr. P obtains GST registration on 1st June. He intends to file his first GSTR-1 on 11th July for outward supplies of June.
Time limit for furnishing bank account details:
30 days from registration = 1st July
Before filing GSTR-1 = 11th July
Earlier = 1st July
→ Mr. P must furnish bank details on or before 1st July, else registration is liable to be suspended/cancelled.
### Example 2
Example 2: A TDS deductor under Sec 51 applies for GST registration. He believes he has 30 days post-registration to furnish bank details.
→ Incorrect. TDS deductors must furnish bank account details at the time of application itself, not within 30 days post-registration.
⚠️ Common exam mistakes
Applying the 30-day window to TDS/TCS deductors and suo-motu registrants — they must furnish bank details at registration application stage.
Forgetting that filing GSTR-1/IFF before 30 days triggers the earlier deadline for bank account submission.
Not realising that non-compliance with Rule 10A is an independent ground for cancellation under Rule 21.
Bare-Act text Rule 10A · CGST Rules, 2017 · click to expand
Rule 10A: After a certificate of registration has been made available on the common portal and a GSTIN has been assigned, the registered person, except those granted registration under rule 12 (TDS/TCS) or suo-motu registration under rule 16, shall furnish information with respect to details of bank account on the common portal within a period of 30 days from the date of grant of registration, or before furnishing the details of outward supplies of goods or services or both under section 37 in Form GSTR-1 or using IFF, whichever is earlier.