Tax-audit assignment limits: what UDIN does and does not cap

Two ICAI rules are often conflated: the ceiling on tax-audit assignments and the process for generating a Unique Document Identification Number (UDIN). ICAI's UDIN guidance says there is no limit on how many UDINs a member may generate. The separate tax-audit guideline limits the number of tax-audit assignments a Chartered Accountant may accept.

What the 60-assignment ceiling applies to

For financial years beginning on or after 1 April 2026, ICAI's revised guidelines set a ceiling of 60 tax-audit assignments per Chartered Accountant in practice, per financial year. For a firm, capacity is generally determined by the number of partners who are Chartered Accountants in full-time practice. Confirm the current ICAI guidelines and any applicable exclusions before accepting an engagement.

What UDIN tracking should enforce

• Record the 18-character UDIN exactly as generated on the ICAI portal.
• Record the document date and the actual generation timestamp.
• Do not block generation because a practice has recorded 60 UDINs.
• Allow revocation only within ICAI's published 48-hour window.

Track assignments separately

Maintain a partner-level tax-audit assignment register before engagement acceptance. That register should count eligible assignments, record exclusions and transfers, and warn the engagement team before the applicable ceiling is reached. It should not use the number of UDIN records as a proxy: UDIN activity does not determine whether an engagement counts under the assignment guideline.

Practical workflow

1. Check partner capacity before accepting or reallocating a tax-audit engagement.
2. Document the engagement in the assignment register with its financial year.
3. Generate the UDIN on the ICAI portal within the current permitted generation period.
4. Record the UDIN in the practice system without imposing a generation cap.

PracticeFlow 360 keeps UDIN recording separate from engagement-capacity planning so one rule cannot incorrectly block the other.