Section 46 of CGST explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
Section 46 of the CGST Act, 2017 empowers the proper officer to serve a notice on a registered person who has failed to furnish a return under Sections 39, 44 or 45, requiring them to file the return within 15 days. The notice is issued in Form GSTR-3A, and continued default can lead to a best-judgment assessment under Section 62.
What Section 46 Says — In Plain English
Section 46 is the formal wake-up call the GST system sends before it starts assessing you. In plain English, if you miss a required return, the department does not immediately estimate your tax and demand it — first, it must give you a notice telling you to file within a set window. That window is 15 days, and the notice is issued in Form GSTR-3A under Rule 68.
The section provides that where a registered person fails to furnish a return under Section 39 (monthly/quarterly return), Section 44 (annual return) or Section 45 (final return), a notice shall be issued requiring them to furnish the return within 15 days. It is the statutory bridge that connects a missed return to enforcement action, giving the defaulter a final, defined chance to comply before the officer can proceed to assess the tax to the best of their judgment.
Clause / Sub-section Breakdown
| Element | What it means |
|---|---|
| Trigger | Failure to furnish a return under Section 39, 44 or 45. |
| Action | Proper officer issues a notice requiring the return to be filed. |
| Time to comply | 15 days from service of the notice. |
| Prescribed form | Form GSTR-3A under Rule 68 (system-generated). |
| Consequence of non-compliance | Best-judgment assessment under Section 62. |
Applicability & Scope
- Applies to any registered person who fails to file a return required under Sections 39, 44 or 45.
- The notice is system-generated in Form GSTR-3A once a return is not filed by the due date.
- The person must file the pending return within 15 days of service of the notice.
- It precedes and enables best-judgment assessment under Section 62.
Worked Examples
Example 1 — Timeline of a defaulter notice. A registered person does not file the GSTR-3B for June 2026, which was due on 20 July 2026.
| Event | Date / Action |
|---|---|
| GSTR-3B due date (June 2026) | 20 Jul 2026 |
| Return not filed — GSTR-3A notice issued | e.g., 25 Jul 2026 |
| 15-day window to file return | By 09 Aug 2026 |
| Still not filed → best-judgment assessment | Section 62 |
If the person files the return within 15 days of the GSTR-3A notice (with applicable late fee and interest), no further action follows. If not, the officer may pass a best-judgment assessment order under Section 62. Filing a valid return within 60 days of that order (extendable by a further 60 days with an additional late fee) withdraws the assessment.
Example 2 — Cost of ignoring the notice. Assume the June GSTR-3B carried an output tax liability of ₹1,50,000. If the taxpayer ignores the GSTR-3A notice and a best-judgment order under Section 62 estimates ₹2,00,000, the taxpayer faces that estimated demand plus interest under Section 50 and late fee under Section 47. Had the taxpayer instead filed within the 15-day window, they would have paid only their actual ₹1,50,000 liability, the applicable interest, and a modest late fee — a far cheaper outcome.
Step-by-Step in Practice
- Watch for the auto-generated Form GSTR-3A once a return crosses its due date.
- Identify the exact return (period and type) referenced in the notice.
- File the pending return within 15 days, paying the tax due, interest and late fee.
- If a Section 62 order is already passed, file a valid return within 60 days to get it withdrawn.
- Clear all backlog returns, since sequential filing rules block later periods until earlier ones are filed.
Common Mistakes & Practical Notes
- The defaulter notice is Form GSTR-3A, issued electronically under Rule 68 — not to be confused with a demand order.
- Treating the notice as optional; a single Section 46 notice can be enough to enable assessment for that period.
- Filing the return without the required late fee (Section 47) and interest (Section 50), which the portal will insist on.
- Letting a Section 62 order stand — it can be withdrawn only by filing a valid return within 60 days.
- Ignoring knock-on effects: persistent default can block e-way bill generation and further return filing.
Penalties, Timelines & Related Sections
Non-response leads to best-judgment assessment under Section 62 and possible recovery, plus late fee (Section 47) and interest (Section 50). A Section 62 order can be withdrawn if a valid return is filed within 60 days (extendable to 120 days with an additional late fee). Section 46 connects to Sections 39, 44 and 45 (the returns whose non-filing triggers it), Section 47 (late fee), Section 50 (interest), Section 62 (assessment of non-filers) and Rule 68 (Form GSTR-3A).
Recent Amendments & Context
The Finance Act, 2023 amended the surrounding machinery: the window to file a valid return and have a Section 62 best-judgment order deemed withdrawn was extended from 30 days to 60 days (with a further 60-day extension on payment of additional late fee). This makes timely response to a GSTR-3A notice under Section 46 even more valuable, since acting early avoids the estimated demand and the tighter withdrawal timeline altogether.