Who is the Most Powerful in the Boardroom: CEO or Chairman?

It is one of the most searched questions in corporate governance, and the honest answer is that it depends entirely on which kind of power you are asking about. A chief executive who controls the budget, the executive team and the flow of information into the boardroom is enormously powerful in the ordinary running of a company. A chair who controls the agenda, the composition of the board and the succession process is enormously powerful at the moments that decide a company’s direction.

What follows is the UK answer specifically, grounded in the UK Corporate Governance Code, the Companies Act 2006 and, for regulated firms, the FCA’s senior manager regime. The picture in the United States is materially different, and we cover that too, because a great deal of the commentary boards read on this subject is written for a market where the rules are not the same.

What UK governance actually requires

The starting point is the UK Corporate Governance Code, maintained by the Financial Reporting Council and applying on a comply-or-explain basis to companies with a premium listing. The 2024 edition took effect for financial years beginning on or after 1 January 2025, with the internal controls provision following a year later.

Four provisions shape the balance of power between chair and chief executive:

Provision 9 states that the chair should be independent on appointment, and that the roles of chair and chief executive should not be exercised by the same individual. This is the single clearest statement of UK practice. Combining the two jobs is not unlawful, but a listed company that does it must explain itself to shareholders.

Provision 11 expects at least half the board, excluding the chair, to be non-executive directors the board considers independent. That matters because a chair with no independent majority behind them has authority on paper and very little in the room.

Provision 12 requires one of the independent non-executives to serve as senior independent director, acting as a sounding board for the chair and as a route for shareholders and other directors when the normal channel is not appropriate. The SID exists precisely because the chair can also become too powerful.

Provision 19 says the chair should not stay in post beyond nine years from first appointment to the board, with limited flexibility to support succession. Entrenchment is treated as a governance risk in itself.

Underneath the Code sits company law. Under section 172 of the Companies Act 2006, every director owes the same duty to promote the success of the company. Non-executive directors are not junior directors. In legal terms the chair, the chief executive and the newest independent appointee carry identical statutory duties, and identical exposure if those duties are breached.

Companies outside the premium listing regime work to different frameworks. AIM and growth companies typically adopt the QCA Corporate Governance Code, and large private companies often report against the Wates Principles. The Chartered Governance Institute publishes useful comparisons of how these frameworks differ. The direction of travel is the same in all of them: concentrated power at the top of a company is a risk to be managed, not a virtue to be celebrated.

Where the chief executive’s power actually comes from

Formal authority explains very little of what makes a chief executive powerful. Four informal sources explain most of it.

Information. The CEO decides what reaches the board, in what form, and with what framing. A board sees the business through papers the executive prepares. That asymmetry is structural and cannot be designed away, only mitigated by a board that reads carefully and asks for what it has not been given.

The executive team. The CEO builds and leads it. Loyalty runs to the person who sets objectives and decides promotions, not to a chair the executives see for a few hours a month.

Delivery. A chief executive hitting plan accumulates political capital quickly. Boards rarely challenge a CEO who is beating expectations, which is why governance failures so often follow a period of apparently excellent performance.

External identity. Investors, customers and the press treat the CEO as the company. That external gravity translates directly into internal authority, particularly in founder-led and owner-managed businesses where the two are genuinely inseparable.

Where the chair’s power actually comes from

The chair’s power is quieter, less visible day to day, and considerably harder to resist when it is exercised.

The agenda. Whoever decides what the board discusses, in what order, and how long is spent on each item, shapes what the board can meaningfully decide. A chair who allocates ten minutes to a strategic risk has effectively decided it will not be examined.

Appointment and removal. The chair leads the nomination committee and therefore leads chief executive succession. This is the decisive asymmetry: a chair can begin the process that ends a chief executive’s tenure, and a chief executive cannot do the reverse. Every other question about relative power sits underneath this one.

Board composition. Over a few years a chair reshapes the board through independent non-executive appointments. Boards come to reflect the chair who assembled them, which is why chair succession changes a company more than most shareholders expect.

Access to shareholders. The chair speaks to major investors without the executive present. When a chair loses confidence in a chief executive, that channel is where the change begins.

Evaluation. The chair runs the board effectiveness review and appraises the chief executive. The FRC’s guidance on board effectiveness is explicit that the chair-CEO relationship is one of the strongest determinants of whether a board works at all.

Six factors that decide the balance in practice

Ownership. A chief executive who is also a substantial shareholder holds power the governance structure cannot touch. In private equity portfolio companies the reverse is common, where a chair appointed by the sponsor carries the investor’s authority into the boardroom. This is why board appointments in PE-backed businesses follow a different logic from listed company appointments.

Company stage. In a founder-led scale-up the founder-CEO is usually the centre of gravity, and the chair’s job is to build governance that will survive them. In a mature listed business the institutional weight sits with the board.

Crisis. Power moves toward the board sharply and visibly during a crisis. Boards that have never rehearsed this discover the transition is difficult at exactly the moment it needs to be smooth.

Relative tenure. A chair of eight years and a chief executive of eight months are not equals, whatever the terms of reference say. Reverse the tenures and the balance reverses with them.

Time commitment. A chair giving two days a month cannot exercise the influence of one giving two days a week. Boards frequently specify the responsibilities of a chair without specifying the time required to discharge them, which is one reason our NED and chair fee benchmarks are built around days rather than titles.

Regulation. In FCA-authorised firms the chair holds the SMF9 senior management function and carries personal regulatory accountability for the effectiveness of the board. The Senior Managers and Certification Regime gives the chair of a regulated firm a weight of individual responsibility that has no equivalent in an unregulated company. We cover this in detail on our SMF9 chair appointments and FCA-regulated board governance pages.

Why the answer is different in the United States

Neither the NYSE nor Nasdaq requires the roles to be separated, and combining them remains ordinary practice. Where the roles are combined, US boards typically appoint a lead independent director, which performs a broadly similar function to the UK’s senior independent director without carrying the same Code backing.

Two current examples make the contrast concrete. At Microsoft, Satya Nadella has been both chairman and chief executive since June 2021, with a lead independent director providing the counterweight. At Berkshire Hathaway, Greg Abel became chief executive on 1 January 2026 while Warren Buffett remained chairman, separating roles that had been combined for six decades.

Neither arrangement would sit comfortably with Provision 9 in a UK premium-listed company without a substantial explanation to shareholders. When a board reads US commentary on this question, it is reading about a different rulebook.

Warning signs that the balance has gone wrong

In practice, the boards that get into difficulty are rarely the ones debating the theory. They show a small number of recognisable symptoms.

Board papers arrive late, so directors cannot prepare and the executive account goes unchallenged. Difficult items sit at the end of the agenda and run out of time. The chair and chief executive present a single view on every question, which usually means one of them has stopped forming an independent one. Non-executives raise concerns privately with the chair but not in the meeting. Succession is discussed in principle and never scheduled. Executive sessions without management present either do not happen or have no output.

Any one of these is manageable. Three or four together indicate a board that has stopped functioning as a check on the executive, and an independent board review is usually a faster route back than another round of appointments.

What this means when you are appointing a chair

Boards asking who is more powerful are often really asking a practical question: what should we look for in the person we are about to appoint?

The chairs who work are the ones who can hold authority without needing to display it. They can disagree with a chief executive in private and support them in public. They give the executive room to run the business and intervene decisively when the evidence says they must. They are comfortable being the least visible person in the room and the most consequential one.

That combination is unusual, and it is not reliably predicted by a distinguished executive career. A chief executive is trained to decide. A chair is required to enable others to decide well, which is a different discipline and one that many outstanding operators never acquire. This is the central judgement in every non-executive chair appointment and every chairman of the board search we run.

Frequently asked questions

Can the same person be chair and chief executive in the UK?

Legally, yes. Under the UK Corporate Governance Code a premium-listed company that combines the roles must explain the departure to shareholders, and institutional investors generally resist it. Outside the listed environment, combined roles remain common in private and owner-managed companies.

Does the chair have authority over the chief executive?

Not as a line manager. The chair leads the board, and the board collectively appoints, appraises and removes the chief executive. The chair’s authority is exercised through the board rather than over the executive individually.

What is the difference between a chairman and an executive chairman?

A non-executive chair leads the board and has no operational responsibility. An executive chairman holds an executive role in the business as well, concentrating significantly more power and reducing the board’s independence. Under the Code an executive chairman would be a departure requiring explanation.

Who is more powerful in a private company?

Usually the chief executive, particularly where they are also a founder or major shareholder. The Code does not apply, board independence is often limited, and the chair’s leverage depends more on the shareholders’ backing than on any governance framework.

Who is more powerful in an FCA-regulated firm?

The regulatory picture shifts the balance toward the chair. As the SMF9 senior manager, the chair carries personal accountability for board effectiveness, and the FCA will hold them to it. See our iNED recruitment and FCA SMCR INED appointment pages for how this changes a search.