The Supreme Court has raised concerns over how Income Tax authorities determine whether communications between lawyers and their clients are protected by lawyer-client privilege during tax-related inquiries.

A Bench comprising Chief Justice of India Surya Kant, Justice Joymalya Bagchi and Justice V. Mohana discussed the issue on September 24, 2026, while hearing a suo motu case concerning summons issued by investigating agencies to advocates who provide legal opinions or represent parties during criminal investigations.

Distinction Between Tax Planning And Tax Avoidance

The Bench considered the difficult question of where the line should be drawn between confidential legal advice and communications that may legitimately be disclosed to investigating authorities.

Justice Joymalya Bagchi illustrated the issue through the example of tax-related advice. He pointed out that there is a distinction between legitimate tax planning and impermissible tax avoidance.

Justice Bagchi observed that if a lawyer explains that a particular arrangement amounts to tax planning rather than tax avoidance, the communication may attract privilege. However, the difficulty arises in determining how Income Tax authorities assess such communications.

The Court stressed the need for a workable mechanism to distinguish between communications concerning permissible tax planning, which may be protected by lawyer-client privilege, and communications relating to illegal tax avoidance, which may not receive such protection.

CJI Surya Kant observed:

“We have to see a way which is workable.”

Justice Bagchi agreed with the need for such a mechanism but expressed concern over the manner in which Income Tax authorities are currently approaching the issue.

In-House Counsel And External Lawyers

The Bench also examined the distinction between communications involving in-house counsel and those involving external legal advisers.

Justice Bagchi noted that an in-house counsel has an employer-employee relationship with the company, whereas an external lawyer is engaged under a professional arrangement.

The Court considered whether this distinction could affect the extent of legal privilege available to communications between a company and its in-house counsel as compared with communications with an external legal adviser.

Mukul Rohatgi Points To Earlier Judgment

Senior Advocate Mukul Rohatgi pointed out difficulties arising from an earlier Supreme Court judgment concerning lawyer-client privilege.

According to Rohatgi, the earlier judgment does not adequately address the position of lawyers who independently advise companies but are not employed as in-house counsel.

He also submitted that the earlier judgment did not sufficiently deal with the relevant statutory provisions, except in its operative portion.

Rohatgi informed the Bench that the General Counsel’s Association has filed a review petition against the earlier judgment and requested the Court to examine the issue.

Issue Of Privilege Under Examination

The Supreme Court's discussion highlights the need to distinguish genuine professional communications between lawyers and clients from communications that may concern activities falling outside the scope of protected legal advice.

The issue is particularly significant in tax investigations, where authorities may have to determine whether a communication relates to lawful tax planning or an arrangement intended to facilitate impermissible tax avoidance.

The Bench is therefore examining how the protection of lawyer-client confidentiality can be applied while allowing investigating authorities to proceed with legitimate inquiries.