What a good tax opinion looks like — and why most practices can't write one fast enough

Tax advisory is where the real money is in CA practice. Compliance — returns, reconciliations, audit work — generates recurring revenue at largely fixed rates. Advisory is where a CA earns fees that reflect the actual value delivered: a well-researched opinion on a ₹2 crore transaction saves the client far more than the opinion costs.

The bottleneck isn't the knowledge. It's the time to produce a properly documented opinion on top of everything else on a CA's plate. So the verbal advice gets given, the transaction proceeds, and eighteen months later everyone is trying to reconstruct what the basis was.

What a proper tax opinion must contain

A tax opinion isn't a memo. It's a structured document with specific sections:

• Facts assumed — the specific facts as communicated by the client, with explicit disclaimers on what you haven't independently verified.
• Question presented — the precise legal question being answered, narrowly stated.
• Applicable law — the statutory provisions, rules, and circulars directly relevant to the question.
• Analysis — the legal reasoning applied to the facts, with citation to authority for each material proposition.
• Conclusion — a direct answer to the question presented, with any qualifications explicitly stated.
• Limitations — what the opinion doesn't cover, what changed facts would change the conclusion.

Why the limitations section matters as much as the conclusion

The section most CAs skip is the limitations section. If the client told you the transaction structure was X and it turned out to be Y, your opinion on X doesn't cover Y. Courts and tribunals have consistently held that a professional opinion protects the taxpayer from penalty only if they relied on it in good faith and disclosed all relevant facts.

A limitations section that explicitly states 'this opinion is based on the facts as described and does not cover the case where [X] is different' is your protection and your client's as well.

How Counsel helps draft opinions faster

When you describe the transaction and the question in Counsel, it drafts the opinion structure: applicable provisions, the analysis for and against the position, the relevant case law on the point, and a suggested conclusion. The draft includes citations to verified authorities from our corpus — not invented references.

You then apply your professional judgment, adjust the analysis for the specific facts you know, add any nuance from your knowledge of the client's broader tax position, and finalise. What would take three hours from a blank page takes forty minutes with a structured draft that has the law already assembled.

The output is a properly structured professional opinion that goes to the client in writing. Which means that if a notice ever comes, there's a clear record of the advice and the basis for the position taken.

The GST-specific opinion context

In GST, a well-documented opinion is especially valuable for two categories of transactions: cross-border supply classification (determining whether a service is an export, an import, or a purely domestic supply) and composite supply / mixed supply characterisation, where the principal supply question determines the applicable rate.

Both categories generate regular litigation because the law is genuinely unsettled in parts. A well-reasoned opinion that demonstrates a bona-fide interpretation of an unsettled position is the primary defence against penalty under Section 74 if the department takes a different view.