Revoking a cancelled GST registration: Form REG-21, the 90-day window and what to clear first

Last updated 24 Oct 2026 · India

Short answer. If the proper officer cancelled your GST registration on their own motion, you can apply for revocation in Form GST REG-21 under section 30 of the CGST Act read with Rule 23, within 90 days of the date the cancellation order was served. The window can be extended by a senior officer for up to 180 days on sufficient cause. Before applying you must file all pending returns and pay the tax, interest and late fee due up to the cancellation date. Revocation is not available if you cancelled the registration yourself.

Step by step

Read the cancellation order (REG-19) and note the date it was served.
File every pending return up to the effective date of cancellation and pay tax, interest and late fee.
On the GST portal: Services > Registration > Application for Revocation of Cancelled Registration (REG-21). Give the reason and attach supporting documents.
The officer either restores the registration (order in REG-22) or issues a show cause notice (REG-23). Reply in REG-24 within the time given.

Common mistakes

Applying before clearing returns. The portal and the officer expect returns filed up to the cancellation date first.
Missing the 90 days and not asking for an extension with reasons inside the extended limit.
Confusing voluntary and officer cancellation. If you applied to cancel (REG-16), revocation does not apply; you register afresh.
Ignoring the REG-23 notice. No reply usually means rejection.

Checklist

REG-19 order and date of service
All pending returns filed, dues paid
REG-21 filed within 90 days (or extension reason ready)
REG-24 reply if a notice comes

Frequently asked questions

What is the time limit for GST revocation?

90 days from the date of service of the cancellation order, extendable on sufficient cause for up to 180 days under Rule 23 of the CGST Rules.

Which form is used to apply for revocation?

Form GST REG-21, filed on the GST portal.

Can I revoke a cancellation I applied for myself?

No. Revocation under section 30 is for registrations cancelled by the proper officer on their own motion.

Official sources

Not tax or legal advice. This is a free explainer of public rules; deadlines and rules can change by notification, so confirm on the official portal or with your CA before you file. Last checked 24 Oct 2026.

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