One-Third or Half? Listed Company Board Composition

One explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.

The Companies Act says a listed public company needs one-third independent directors. A great many listed companies actually need half — and the trigger is something most people don't think of as a composition rule at all.

It's about who chairs the board.

One-third independent where the chairperson is a non-executive director. Half where there's no regular non-executive chairperson, or where the chairperson is a promoter or related to a promoter or to a person in the management. Plus: at least one woman director, an independent woman director for the top 1,000, a minimum of six directors for the top 2,000, and a board quorum that must include an independent director.

The core test: Regulation 17(1)(b)

Read that middle row carefully, because it's the one that catches companies out. A listed entity with an executive chairperson — very common in India — has no regular non-executive chairperson and therefore needs half its board independent. Not one-third.

The same result follows in most promoter-led companies, since the chairperson is usually the promoter or a family member.

The Companies Act's Section 149(4) one-third requirement is a floor. Where SEBI requires half, half is the operative number.

Rounding: any fraction is rounded up. A board of nine needing one-third requires three; needing half, it requires five (4.5 rounded up).

Woman directors

Two separate requirements, often confused:

• Every listed entity must have at least one woman director on the board.
• The top 1,000 listed entities by market capitalisation must have at least one independent woman director.

The second doesn't replace the first — it upgrades it. A top-1,000 entity whose only woman director is an executive director doesn't comply.

The Companies Act adds its own woman director requirement through Section 149(1) and Rule 3, reaching every listed company and every other public company with paid-up capital of ₹100 crore or more or turnover of ₹300 crore or more.

Board size

The top 2,000 listed entities by market capitalisation must have a board of not fewer than six directors.

That interacts with the independence test. A top-2,000 entity with an executive chairperson needs six directors minimum and half of them independent — so at least three independent directors, and in practice more, because the audit committee and NRC composition rules need enough independent bodies to fill them.

Under the Companies Act, the general ceiling is fifteen directors, exceeded only by special resolution.

The quorum rule

For the top 2,000 listed entities, the quorum for a board meeting is one-third of total strength or three directors, whichever is higher, and it must include at least one independent director.

This is a small provision with a large practical effect. A board meeting held without any independent director present is inquorate — every decision taken at it is open to challenge. It effectively gives independent directors a collective ability to prevent a board from transacting business in their absence, which is the strongest structural protection in the regulation.

If you're the only independent director available for a meeting, you're not optional attendance.

Age and continuation

Seventy-five. A listed entity cannot appoint or continue the directorship of a non-executive director who has attained the age of 75 unless a special resolution is passed, with the explanatory statement justifying the appointment.

It's not a prohibition — it's a shareholder decision, and plenty of entities pass it. But it has to be passed, and it has to be revisited.

Chairperson and MD/CEO separation. The requirement for the top 500 entities to separate these roles was made voluntary rather than mandatory. Many companies comply anyway; nothing requires it.

Shareholder approval: two different rules

These get conflated constantly and they do different things.

Regulation 17(1C) — approval of appointment. Shareholder approval for a person's appointment to the board must be obtained at the next general meeting, or within three months of the appointment, whichever is earlier.

That's the rule that stops a company appointing someone in April and waiting until an AGM in September. If the next general meeting is more than three months away, you call one or use postal ballot.

Regulation 17(1D) — approval of continuation. In force since 1 April 2024: the continuation of a director on the board is subject to shareholder approval in a general meeting at least once every five years from the date of appointment or reappointment.

Directors who, as on 31 March 2024, had already served five years or more without shareholder approval had to be placed before shareholders at the first general meeting after that date.

But it doesn't apply to everyone. The requirement is excluded for a whole-time director, managing director, manager, independent director, or a director retiring by rotation under Section 152(6) — because shareholder approval for those roles is already provided for elsewhere. It's also excluded for directors appointed by a court or tribunal, government nominees (other than in public sector companies), financial sector regulator nominees, nominees of RBI-regulated financial institutions, and debenture trustee nominees.

Strip out the exclusions and what's left is the regulation's actual target: the non-executive, non-independent director who neither retires by rotation nor otherwise faces a shareholder vote — the long-serving "permanent director" on a promoter-led board. That seat is what Regulation 17(1D) ended.

The rest of Regulation 17, briefly

Where composition actually breaks

1. Executive chairperson, one-third independent. The single most common failure. It should be half.
2. A woman director who isn't independent, in a top-1,000 entity.
3. An independent director's term ends and nobody recomputes the ratio.
4. A director stops meeting the independence criteria mid-term and is still counted.
5. A board meeting held with no independent director present, in a top-2,000 entity — inquorate.
6. Regulation 17(1D) missed for a long-serving non-executive director who isn't independent and doesn't retire by rotation.
7. Committee composition breaks when an independent director leaves, even though the board ratio still holds.

Key takeaways

• Half, not one-third, wherever the chairperson is a promoter or executive.
• Fractions round up.
• Top 1,000: independent woman director. Top 2,000: minimum six directors.
• Board quorum must include an independent director in the top 2,000 — no independent director, no valid meeting.
• 75 years for a non-executive director needs a special resolution.
• 17(1C) is about appointment; 17(1D) is about continuation — and 17(1D) excludes independent directors, executive directors and rotational directors.
• Check the ratio every time a director leaves, and check the committees separately.

Read next

• SEBI LODR Corporate Governance Requirements for Listed Companies
• Regulation 17(1D): Shareholder Approval Every Five Years
• Woman Director and Woman Independent Director: Who Must Appoint One
• Regulation 25 of SEBI LODR: Every Obligation of an Independent Director

Law stated as on 5 September 2026. Market-capitalisation-based categories (top 1,000, top 2,000) are recomputed annually — confirm your entity's current category before applying these thresholds.