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18 OCTCMP-08 · Composition payment · Jul–Sep 2026in 3 days 20 OCTGSTR-3B · Summary return · Sep 2026in 5 days 22 OCTGSTR-3B (QRMP) · Quarterly return · Jul–Sep 2026 · 22nd or 24th by statein 7 days 11 NOVGSTR-1 · Outward supplies · Oct 2026in 27 days 13 NOVIFF (QRMP) · B2B invoices · Oct 2026in 29 days 25 NOVPMT-06 (QRMP) · Monthly GST payment · Oct 2026in 41 days 15 OCTPF & ESI · Contributions · Sep 2026due today 21 OCTTax Audit Report · Form 3CA/3CB · AY 2026-27 · extended from 30 Sepin 6 days
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GST — Guides, Updates & Practical Insights

Understand GST with practical, easy-to-follow guidance — from the basics through registration, returns, compliance and notices.

1,119Articles
266In-depth Guides
↻Updated Regularly
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GST

Section 155 of CGST Act 2017 — Burden of Proof

Section 155 of the CGST Act places the burden of proving eligibility of input tax credit on the person who claims it, not on the department.

4 min read13 Oct 2026
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GST

GST Penalty Guide — Every Fine, How to Avoid It

Every GST penalty, interest rate, and section reference for 2026–27. Late return filing, ITC fraud, non-registration, e-invoicing violations, and more — with exact section numbers.

7 min read13 Oct 2026
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GST

GST Invoice: Format, Mandatory Fields, Rules & How to Create (2025-26)

Complete guide to GST invoice for FY 2025-26. Mandatory fields in a GST tax invoice, invoice format, time limit to issue, e-invoicing applicability, Bill of Supply for exempt goods, and free GST invoice formats.

11 min read13 Oct 2026
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GST

GST Portal (gst.gov.in) Complete How-To Guide

Step-by-step guides for GST registration, GSTR-1 & GSTR-3B filing, e-invoice generation, e-way bill, ITC reconciliation, and refund application.

10 min read13 Oct 2026
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GST

Rule 46: Every Particular a Tax Invoice Must Carry

Nineteen clauses, four provisos and two conditional entries. Missing some of them is fatal to the recipient's credit; missing others is not — and Rule 36(2) says which.

5 min read14 Oct 2026
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GST

ITC Denied for a Supplier's Default: The Bona Fide Purchaser Rulings

Section 16(2)(c) says credit is available only if the tax has actually been paid to the Government — and the buyer has no way of making that happen. Two rulings, one from the Supreme Court, address who bears that risk.

5 min read13 Oct 2026
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GST

GST E-Invoice: Mandatory Thresholds, Generation Process and IRN

GST e-invoicing is mandatory for businesses with turnover above Rs.5 crore. Learn about the Invoice Registration Portal (IRP), IRN generation, QR code requirements, and integration with accounting software.

2 min read13 Oct 2026
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GST

Sections 31-34 CGST — Tax Invoice, Credit Note, Debit Note, and E-Invoice

tax invoice GST. Complete guide under GST law. Updated March 2026.

8 min read13 Oct 2026
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GST

Sections 1-2 CGST Act 2017 — Definitions (130+ Key Terms Explained)

CGST Act Section 2 definitions. Complete guide under GST law. Updated March 2026.

8 min read13 Oct 2026
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GST

Section 158 of CGST Act 2017 — Disclosure of Information by a Public Servant

Section 158 of the CGST Act keeps taxpayer particulars in statements, returns and accounts confidential and lists the limited exceptions where disclosure is permitted.

4 min read13 Oct 2026
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GST

Rule 48(5): An Invoice Without an IRN Is Not an Invoice

Not a defective invoice — no invoice at all. Which means the supply is undocumented, the recipient's credit fails at section 16(2)(a), and the e-way bill has no basis.

4 min read13 Oct 2026
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GST

Rule 36: Which Documents Actually Support a Credit Claim

Five documents, one minimum-particulars relaxation, and a rule that makes an invoice without an IRN not an invoice at all.

5 min read12 Oct 2026
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GST

Invoice Numbering: Sixteen Characters and Two Symbols

The rule is short and the systems break it constantly — spaces, hashes, restarts mid-year, and duplicate numbers across locations that fail IRN generation.

4 min read13 Oct 2026
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GST

Section 129: Detention, Penalty and Release

Since 2022 it is a penalty-only provision — 200% of tax if the owner comes forward, 50% of value if not — with seven days for the notice and seven for the order.

6 min read13 Oct 2026
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GST

Section 145 of CGST Act 2017 — Admissibility of micro films, facsimile copies of documents and computer printouts as documents and as evidence

Section 145 makes microfilms, facsimile copies and computer printouts of records admissible as documents and as evidence in GST proceedings, subject to prescribed conditions on how the copies and printouts were produced.

7 min read13 Oct 2026
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GST

RCM Goods Entries 5 to 7: Lottery, Government Scrap and Priority Sector Lending Certificates

These three entries have nothing in common commercially. They have everything in common analytically: each of them only works because a classification question was settled first — is a lottery ticket goods, is a government department a taxable person, is a PSLC a security?

7 min read10 Oct 2026
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GST

The Rule 46(s) Declaration: Proving E-Invoicing Does Not Apply

A supplier above the threshold that does not generate an IRN must say why on the face of the invoice. Missing it puts the recipient's credit into doubt for no reason.

4 min read13 Oct 2026
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GST

GST 2.0 Transition Checklist: The Twelve Things to Close Out

Masters, stock, contracts, credit ledgers, refund claims and disclosures. A practical close-out list for the 22 September 2025 rate change, still worth running today.

5 min read09 Oct 2026
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GST

Section 85: Buying a Business and Inheriting Its GST

Transferee and transferor are jointly and severally liable for everything due up to the transfer — including amounts determined years afterwards.

6 min read13 Oct 2026
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GST

Section 146 of CGST Act 2017 — Common Goods and Services Tax Electronic Portal

Section 146 empowers the Government to notify a Common GST Electronic Portal (the GSTN portal) for registration, payment of tax, furnishing of returns, computation and settlement of IGST, generation of e-way bills, e-invoicing and other prescribed functions.

7 min read13 Oct 2026
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GST

HSN Digits: Four, Six or Eight, and Who Decides

Turnover decides the digit count for most supplies. But a separate list requires eight digits from everyone, whatever their size — and that list is easy to miss.

4 min read13 Oct 2026
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GST

Mixed Supply and the Single Price: Where Bundling Is a Choice

A mixed supply attracts the highest rate in the bundle — but only if there is a single price. Change the pricing and you change the classification. That is legitimate.

4 min read14 Oct 2026
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GST

Identifying the Principal Supply in a Composite Supply

Section 8(a) applies the principal supply's rate to everything. Which is why the harder question is not whether a bundle is composite, but which element leads it.

4 min read13 Oct 2026
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GST

The "Naturally Bundled" Test: How to Actually Apply It

Composite supply turns on whether elements are naturally bundled in the ordinary course of business. The indicators, the traps, and why your own practice decides it.

4 min read13 Oct 2026