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CORAA
Tax season desk · 2026

Make tax season ready.

A working desk for Indian CA firms: the calculators, reconciliations, templates and AI workflows that reduce the first-pass work without removing professional judgement.

Start with TDS transitionOpen tax-audit workpapers

Use the tool that matches today’s file.

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Tax audit workflow tools

Generate the client PBC request, maintain the exception register and prepare the partner review pack.

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TDS old → new Act converter

Translate 192 / 194-series / 195 / 206C into Sec 392–394, Forms 138–144 and certificates 130–131.

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Income Tax Act 2025 section mapper

A verified shortlist for tax audit, presumptive income, deductions, TDS, TCS and form renumbering.

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Advance tax calculator

Model instalment shortfalls and 234B/234C exposure before the next payment date.

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TDS rate finder

Search the payment head, rate and threshold used in the FY 2026-27 working file.

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GST reconciliation tools

Move from GSTR-2B to books, GSTR-3B and GSTR-9 with exception notes.

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Form 3CD Clause 20(b) calculator

Test month-wise employee PF/ESI contribution dates and the Section 36(1)(va) disallowance.

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Section 40(a) TDS disallowance calculator

Estimate gross Clause 21(b) exposure for resident and non-resident TDS defaults before completing the payment-wise working paper.

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Tax audit cap calculator

Check the ICAI per-partner ceiling before accepting another tax-audit assignment.

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Tax audit readiness scorecard

Score evidence gates and release blockers before the partner review.

Templates that leave an audit trail.

Generate a working paper, keep the old and new references together, and give the reviewer a clear place to sign off exceptions.

Tax audit client data request ↗Tax audit exception register ↗Tax audit partner review memo ↗Tax audit weekly status update ↗TDS quarter-close checklist ↗Form 3CD clause index ↗Section 40(a) TDS disallowance ↗TDS transition working paper ↗Income Tax Act 2025 firm checklist ↗Form 3CD tax audit report ↗TDS reconciliation working paper ↗Clause 44 GST reconciliation ↗Section 40(a) TDS disallowance ↗

Read before you automate.

Practical articles for tax audit, GST reconciliation, TDS and choosing the right AI assistant for the task.

Tax audit with AI: a review-safe workflow ↗Tax audit AI do’s and don’ts ↗GST reconciliation using AI ↗TDS, Form 26AS and the new Form 140 ↗TDS reconciliation with AI: do’s and don’ts ↗TDS reconciliation using AI: books, 26Q and 26AS ↗26AS vs AIS vs TDS certificates ↗Form 3CD Clause 34 evidence map ↗GST reconciliation do’s and don’ts ↗Tax-audit exceptions AI finds early ↗GSTR-1, GSTR-1A and GSTR-3B workflow ↗Form 26Q to Form 140 checklist ↗Form 26Q using AI: quarter-end checklist ↗Tax audit client documents checklist ↗Form 3CD Clause 44 GST breakup ↗Form 3CD Clause 20(b) PF/ESI ↗Form 3CD upload and taxpayer acceptance ↗ICAI tax audit guidance note update ↗Claude, ChatGPT, Grok and audit work ↗Can you upload client ledgers to AI tools? ↗AI-assisted audit use and source register ↗Tax audit workpapers ↗

The AI rule for this season.

Use Claude for long standards and working-paper context, ChatGPT for structured drafting and spreadsheet logic, Grok for fast current-topic discovery, and CORAA for the firm’s repeatable evidence trail. Whatever the assistant, anonymise client data, cite the source and have a professional sign off the result.