CORAA
Updated October 2026

Audit automation — Page 2 insights.

Practical guides, procedure frameworks, and tool comparisons for CA firms navigating AI-powered audit in India.

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Deep-dive guides

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The archive

One article per concern, every workflow.

AI in Audit
How to Use ChatGPT and Claude for an XBRL Applicability Check: A Step-by-Step Guide for CAs
Use ChatGPT, Claude or Gemini to test whether a company must file AOC-4 XBRL: safe setup, copy-paste prompts, four worked cases with expected answers, the errors AI makes, and a 60-second cross-check.
26 Sept 2026
8 min read
AI in Audit
How to Use ChatGPT and Claude to Calculate Deferred Tax: A Step-by-Step Guide for CAs
Step-by-step prompts for using ChatGPT, Claude or Gemini to build a deferred tax working (DTA / DTL) under AS 22 or Ind AS 12, with a fully worked example, disclosure table and checks for where AI goes wrong.
26 Sept 2026
10 min read
AI in Audit
How to Use ChatGPT and Claude to Calculate GST Interest: A Step-by-Step Guide for CAs
A safe, repeatable way to use a general AI assistant to work out GST interest under Section 50 - late payment at 18%, wrongly availed and utilised ITC at 24% - with copy-paste prompts, a hand-checked example, and the mistakes to catch.
26 Sept 2026
9 min read
AI in Audit
How to Use ChatGPT and Claude to Draft a Utilization Certificate: A Step-by-Step Guide for CAs
A safe, step-by-step method for using ChatGPT, Claude or Gemini to draft and check a utilization certificate, with copy-paste prompts, a worked case and the errors to catch.
26 Sept 2026
8 min read
Industry Guides
NPA Classification for Agricultural and Allied Loans: RBI Master Circular 2025 and the Nov 2025 Directions
When an agricultural loan becomes an NPA under the RBI IRAC norms: crop-season test, Annex-2 scope, why allied activities follow the 90-day test, and provisioning with a worked example.
26 Sept 2026
8 min read
Certifications
Utilization Certificate: Format, Who Signs and a CA Checklist
What a utilization certificate must contain, who signs it under GFR 12-A, what to verify before signing, and how it differs from a turnover or net-worth certificate.
26 Sept 2026
8 min read
Compliance
XBRL Applicability Under the Companies Act: Who Must File AOC-4 XBRL?
Rule 3 of the MCA XBRL Rules 2015 requires listed companies, their Indian subsidiaries, and companies with paid-up capital of ₹5 crore, turnover of ₹100 crore or Ind AS financial statements to file AOC-4 XBRL. Thresholds, exemptions, worked example and common mistakes.
26 Sept 2026
8 min read
AI in Audit
Can You Upload Client Ledgers to ChatGPT, Claude or Grok? A CA Firm Decision Guide
A practical data-confidentiality decision guide for CA firms deciding whether client ledgers, tax records, bank files or working papers may be used with an AI assistant.
15 Sept 2026
7 min
AI in Audit
Claude, ChatGPT or Grok for CA Firms? Match the Model to the Task
A practical, review-safe comparison of Claude, ChatGPT and Grok for Indian CA firms: long documents, structured drafting, current-topic discovery and evidence controls.
15 Sept 2026
6 min
Tax Compliance
26AS vs AIS vs TDS Certificates: What Each Source Can and Cannot Prove
A practical comparison for tax-audit teams reconciling TDS credit, deductor filings, certificates, Form 26AS and AIS without treating every source as interchangeable.
15 Sept 2026
6 min
Tax Compliance
Form 26Q to Form 140: Tax Year 2026-27 Transition Checklist
A practical Form 26Q to Form 140 checklist for deductors and CA firms: year boundary, Sec 393 mapping, payment codes, certificates, corrections and review evidence.
15 Sept 2026
7 min
Tax Compliance
Form 26Q Using AI: A Quarter-End Checklist for Deductors and CA Firms
A quarter-end Form 26Q review workflow using books, challans, deductee masters, correction files, certificates and 26AS/AIS—with safe AI assistance and clear human sign-off.
15 Sept 2026
7 min
Tax Audit
Form 3CD Clause 34 with AI: Build the TDS Evidence Map from Source Data
A review-safe workflow for building Form 3CD Clause 34(a), 34(b) and 34(c) support from ledgers, challans, returns, certificates and 26AS/AIS.
15 Sept 2026
7 min
GST Compliance
GST Reconciliation Do’s and Don’ts: Why a Green Match Rate Is Not Enough
A practical GST reconciliation checklist for CA firms covering GSTR-2B, books, GSTR-3B, timing, eligibility, duplicates and evidence retention.
15 Sept 2026
6 min
GST Compliance
GST Reconciliation Using AI: A Practical Playbook for 2B, Books and GSTR-3B
How CA firms can use AI to triage GST reconciliation exceptions across books, GSTR-2B and GSTR-3B—with a review-safe workflow and do's and don'ts.
15 Sept 2026
8 min
GST Compliance
GSTR-1, GSTR-1A and GSTR-3B: A Reconciliation Workflow for CA Firms
A practical workflow for reconciling outward supplies across books, GSTR-1, GSTR-1A and GSTR-3B, with amendment, credit-note, timing and review controls.
15 Sept 2026
7 min
AI in Audit
Tax Audit with AI: Do’s and Don’ts for a Review-Safe CA Firm Workflow
A practical checklist for using AI in tax audit fieldwork across Form 3CD, GST, TDS and client data—without delegating professional judgement or losing the evidence trail.
15 Sept 2026
7 min
AI in Audit
Tax Audit Exceptions AI Finds Early: A Review Queue for CA Firms
The tax-audit exception patterns AI can surface early—round amounts, year-end entries, missing TDS, related parties and GST mismatches—with the human procedures that follow.
15 Sept 2026
8 min
AI in Audit
Tax Audit with AI: A Review-Safe Workflow for Indian CA Firms
A practical tax-audit workflow using AI for Form 3CD evidence, TDS, GST and exception drafting without outsourcing professional judgement.
15 Sept 2026
8 min
Tax Compliance
TDS from Form 26AS to Form 140: What Changes in Tax Year 2026-27
A CA-firm guide to the old 26Q to new Form 140 transition, Sec 393 mapping, Form 26AS/AIS reconciliation and the year boundary for corrections.
15 Sept 2026
7 min
Tax Compliance
TDS Reconciliation with AI: Do's, Don'ts and a Review-Safe Checklist
A practical TDS reconciliation checklist for Indian CA firms using AI across books, challans, Form 26AS/AIS and Forms 26Q or 140.
15 Sept 2026
7 min
Tax Compliance
TDS Reconciliation Using AI: Books, 26Q, 26AS and Certificates in One Workflow
A review-safe TDS reconciliation workflow for CA firms that separates deduction, deposit, filing, credit and certificate exceptions across books, Form 26Q and Form 26AS/AIS.
15 Sept 2026
8 min
Tax Audit
Form 3CD Clause 20(b): PF and ESI Late-Payment Checks for AY 2026-27
Separate employee and employer PF/ESI contributions, test actual payment dates and prepare Clause 20(b) with partial-payment examples and a review checklist.
7 Sept 2026
6 min read
Tax Audit
Form 3CD Clause 44: Build the GST Expenditure Breakup for AY 2026-27
Prepare a traceable Clause 44 workpaper from ledgers, supplier GST status and a books reconciliation, with an example and common classification errors.
7 Sept 2026
6 min read
Tax Audit
Form 3CD Filing Checklist: Upload Errors and Taxpayer Acceptance in AY 2026-27
Track Form 3CA/3CB-3CD from CA assignment through JSON upload, DSC verification and taxpayer acceptance, with a practical filing-error checklist.
7 Sept 2026
6 min read
Tax Audit
ICAI Tax Audit Guidance Note Revised 2026 Is Out: What to Review Now
ICAI lists the final Revised 2026 Tax Audit Guidance Note. Update your AY 2026-27 review file, replace exposure-draft references and check workpapers.
7 Sept 2026
5 min read
Tax Audit
44AB(a), (b), (c), (d) or (e): Which Clause Applies to Your Tax Audit?
Choose the right Section 44AB clause for Form 3CD Clause 8 in AY 2026-27, with cash-test examples, 44AD history and the 44ADA exception.
7 Sept 2026
7 min read
Tax Audit
Tax Audit Documents Checklist AY 2026-27: What to Ask Clients for Now
A practical tax audit document request for FY 2025-26: books, GST, TDS, MSME, PF/ESI, assets and filing readiness, with owners and acceptance checks.
7 Sept 2026
6 min read
Internal Audit
ACL vs IDEA vs Alteryx vs Power BI for Internal Audit Continuous Monitoring
A practical comparison of ACL, IDEA, Alteryx, Power BI, Python and ERP-native reports for continuous monitoring in internal audit: use cases, limits, evidence, governance and selection criteria.
31 Aug 2026
13 min read
Internal Audit
AI Vendor Due Diligence Checklist for Internal Audit Teams
A practical AI vendor due diligence checklist for internal audit: data privacy, model governance, security, contracts, third-party AI risk, evidence, monitoring and exit readiness.
31 Aug 2026
12 min read
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