Core concepts
- 01Registration thresholds: ₹40L goods, ₹20L services (₹10L special category).
- 02Compulsory registration (Sec 24): inter-state, RCM, e-commerce, casual taxable person, etc.
- 03Returns: GSTR-1 (outward), GSTR-3B (summary), GSTR-9 (annual), GSTR-9C (reconciliation).
- 04Refund situations: zero-rated, inverted duty structure, excess balance, deemed export.
- 05QRMP scheme: quarterly returns for turnover ≤ ₹5 cr with monthly tax payment.
Flowchart summary
GST Return Calendar | GSTR-1 / IFF (10th / 13th) | GSTR-3B (20th / 22nd / 24th) | GSTR-9 Annual (31 December of next FY) | GSTR-9C (audit reconciliation > ₹5 cr)
Exam-critical pointers
- ⭐E-invoicing mandatory for turnover > ₹5 crore (FY 2023-24 threshold).
- ⭐Aadhaar authentication mandatory for fresh registrations to curb fake registrations.
- ⭐Refund on account of inverted duty structure does not apply to specified notified goods.
- ⭐Sec 54(3) — refund of accumulated ITC permitted in 2 cases only: zero-rated + inverted duty.
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