# How Does a CA Audit GST Invoices and Section 269ST Cash Limits?

**Category:** Compliance | **Published:** 2026-05-10 | **Last reviewed:** 2026-06-19 | **Author:** Mrs. Kritika Joshi

Field auditors verify GST tax invoices, payment receipts, and cash receipts against three primary sources: GSTIN active-status on the GSTN portal, Form 26AS and AIS reconciliation on the Income Tax e-Filing portal, and IRN lookup on the e-invoicing registry. Section 269ST (Rs. 2 lakh single-recipient cash limit) draws a 100% penalty under Section 271DA on the recipient regardless of intent.

> **Myth:** Section 269ST only penalises the payer who hands over the cash.
>
> **Fact:** The penalty under [Section 271DA](https://www.incometaxindia.gov.in/Pages/acts/income-tax-act.aspx) falls on the receiver, equal to the cash received in breach, regardless of intent.

## Which three primary sources does every CA audit cross-check?

> **Short answer:** Auditors verify documents against [GSTIN active-status](https://www.gst.gov.in/), [Form 26AS and AIS](https://www.incometax.gov.in/iec/foportal/), and the IRN registry, each ruling out a different class of fabrication.

- The GSTIN pull confirms registration on the invoice date, ruling out shell-entity invoices.
- The Form 26AS and AIS reconciliation checks the transaction against the counter-party's reported income, ruling out unilateral fabrication.
- The IRN lookup on the [e-invoicing registry](https://einvoice1.gst.gov.in/) rules out post-dated insertions for above-threshold B2B suppliers.

## What are the 8 fields a CA checks for GST invoice authenticity?

> **Short answer:** A genuine invoice carries the statutory fields under [Rule 46 of the CGST Rules, 2017](https://www.cbic.gov.in/htdocs-cbec/gst/cgst-rules-as-amended), checked in the order they fail.

- GSTIN format (15 alphanumeric: state code, PAN, entity code, Z, checksum) and the active-status pull, where a Cancelled GSTIN issuing after its cancellation date is fabricated.
- HSN/SAC code must exist in the CBIC master and match the supply description.
- IRN for B2B turnover above Rs. 5 crore (from 1 August 2023): a 64-character SHA-256 hash plus QR, else a breach of [Rule 48(4)](https://www.cbic.gov.in/htdocs-cbec/gst/cgst-rules-as-amended).
- Signed JSON from the IRP, verified against the NIC public key, where tampering fails the signature check.
- Sequential numbering (no gaps), place-of-supply consistency (IGST inter-state vs CGST+SGST intra-state), and tax-split arithmetic with rounding above Rs. 1 flagged.

**[See the Rule 46 field anatomy](https://hrareceipt.in/atlas/gst-tax-invoice-rule-46-field-anatomy)**

## How do auditors verify payment and cash receipts?

> **Short answer:** CAs match receipts to invoices, cross-check the UTR against the bank statement, and profile the cash ratio; advances need a Receipt Voucher under [Rule 50](https://www.cbic.gov.in/htdocs-cbec/gst/cgst-rules-as-amended).

- Each receipt references its invoice; advances draw GST and a Rule 50 Receipt Voucher, with amounts unadjusted within 30 days flagged.
- For NEFT, IMPS, RTGS, and UPI, the UTR must appear in the bank statement on the receipt date in matching amount and payer.
- A B2B provider at 60-70 percent cash carries [Section 269ST](/answers/section-269st-cash-transaction-limit) and Section 269SS (Rs. 20,000 cash loan limit) exposure.
- Cash receipts above Rs. 5,000 need a Re. 1 revenue stamp under the [Indian Stamp Act 1899](https://www.indiacode.nic.in/show-data?actid=AC_CEN_3_20_00021_189902_1517807324951).

## How does the Section 269ST Rs. 2 lakh cash limit work?

> **Short answer:** [Section 269ST](https://www.incometaxindia.gov.in/Pages/acts/income-tax-act.aspx) bars receiving Rs. 2 lakh or more in cash from one person across four triggers, with a 100% penalty on the receiver under Section 271DA.

The checklist sorts the cash register by counter-party PAN, aggregates across the windows, and flags every total touching Rs. 2 lakh. Confirm the audited person was the receiver, and check exemptions (government, banking-company, post office, and cooperative bank receipts are excluded). A freelancer billing one client Rs. 70,000, Rs. 80,000, and Rs. 75,000 over a month aggregates to a Rs. 2.25 lakh penalty.

- Single transaction: one sale of Rs. 2 lakh or more, even if split into tranches against the same invoice.
- Single day: multiple cash receipts from one person in a day that aggregate to Rs. 2 lakh or more.
- Single event or occasion: cash across multiple invoices for one wedding, or a gold or property purchase split across bills, aggregates.

**[See the 269ST three-prong limit](https://hrareceipt.in/atlas/section-269st-2-lakh-cash-limit-three-prongs)**

## When is Form 15CB required for cross-border payments?

> **Short answer:** Cross-border remittances trigger Section 195 and Rule 37BB; a CA certifies chargeability via [Form 15CB](https://www.incometax.gov.in/iec/foportal/) only in defined cases.

- The CA evaluates chargeability, the relevant DTAA, and the withholding rate before issuing Form 15CB online.
- Late or missing filings attract penalty under Section 271-I at Rs. 1 lakh per default.

| Form | When it applies | CA needed |
| --- | --- | --- |
| Part A | Single remittance up to Rs. 5 lakh, no FY aggregate above Rs. 5 lakh | No |
| Part B | Covered by an AO order under Section 195(2), 195(3), or 197 | No |
| Part C + 15CB | Above Rs. 5 lakh aggregate, off Specified List, chargeable | Yes |
| Part D | Specified List item (LRS, education, medical treatment) | No |

*Form 15CA/15CB applicability. Source: Form 15CA and 15CB instructions, Income Tax e-Filing Portal.*

## What does the AIS reveal in an audit?

> **Short answer:** The Annual Information Statement is the PAN-linked record of counter-party-reported Specified Financial Transactions (SFT) above threshold, on the [e-Filing portal](https://www.incometax.gov.in/iec/foportal/).

- SFT triggers: Rs. 10 lakh cash deposits in a savings account, Rs. 50 lakh in a current account, Rs. 30 lakh property purchase or sale.
- Rs. 10 lakh aggregate in bonds, shares, mutual fund units, foreign currency proceeds, or time deposits, plus credit card payments of Rs. 1 lakh cash or Rs. 10 lakh by any mode.
- The CA reconciles each entry against the books, catching unilateral fabrication and material omission.

## What changed for GST e-invoicing in FY 2026-27?

> **Short answer:** The e-invoicing threshold dropped to Rs. 5 crore aggregate turnover (was Rs. 10 crore), pulling many mid-sized B2B suppliers into the IRN-mandatory regime.

- Faceless assessment now covers tax audits where the document is the only record, with no in-person follow-up.
- AIS coverage expanded to digital wallet and UPI receipt aggregates that previously sat outside the SFT net.
- Input-credit reform under [Section 16(2)(c)](https://www.cbic.gov.in/htdocs-cbec/gst/cgst-act) ties recipient input credit to the supplier's tax payment, so supplier audits now affect recipient credit positions.

**[Verify an inbound invoice or receipt QR](https://hrareceipt.in/verify)**

## What document stack does a CA firm run?

> **Short answer:** A firm runs inbound verification and outbound issuance of Section 31-compliant invoices and Rule 50 receipts in parallel.

- Inbound: scanning a QR via the [verifier endpoint](/verify) returns issuer, type, fields, and timestamp; documents without one fall back to the eight-field check, UTR match, and AIS cross-check.
- Outbound: the [pakka bill generator](/pakka-bill) issues Rule 46 fields and the IRN; the [misc receipt generator](/misc-receipt) handles the UTR, revenue stamp, and Rule 50 format.
- The [corporate bundle](/corporate) is from Rs. 499 for 100 credits on a 45-day wallet; solo CAs under 50 documents pay less on Rs. 4 to Rs. 49 per-PDF pricing.

**[Generate a Rule 46-compliant pakka bill](https://hrareceipt.in/pakka-bill)**

## Primary sources

- [Section 31, Central Goods and Services Tax Act 2017 — CBIC](https://www.cbic.gov.in/htdocs-cbec/gst/cgst-act) — Tax invoice issuance requirements for registered persons
- [Rule 46 and Rule 48, CGST Rules 2017 — CBIC](https://www.cbic.gov.in/htdocs-cbec/gst/cgst-rules-as-amended) — Mandatory invoice fields and the e-invoicing scheme
- [Section 269ST and 271DA, Income Tax Act 1961 — Income Tax Department](https://www.incometaxindia.gov.in/Pages/acts/income-tax-act.aspx) — Rs. 2 lakh cash receipt limit and 100% penalty regime
- [Form 15CA and 15CB instructions — Income Tax e-Filing Portal](https://www.incometax.gov.in/iec/foportal/) — Cross-border remittance reporting and CA certification
- [Annual Information Statement (AIS) — Income Tax e-Filing Portal](https://www.incometax.gov.in/iec/foportal/) — PAN-linked SFT and counter-party reporting
- [e-Invoice System — National Informatics Centre](https://einvoice1.gst.gov.in/) — IRN generation and lookup for B2B supplies above threshold
- [GSTN Portal — Search Taxpayer](https://www.gst.gov.in/) — GSTIN active-status verification and registration history
- [Indian Stamp Act 1899 — India Code](https://www.indiacode.nic.in/show-data?actid=AC_CEN_3_20_00021_189902_1517807324951) — Re. 1 revenue stamp on cash receipts above Rs. 5,000

---

*Source: [How Does a CA Audit GST Invoices and Section 269ST Cash Limits?](https://hrareceipt.in/answers/ca-audit-checklist-gst-invoice-authenticity-269st) — HRAReceipt.in*
*This Markdown mirror is published for AI-crawler ingestion. The canonical HTML page is the definitive version.*