Advisory Board vs Board of Directors: Where a Fractional Executive Fits

A board of directors has legal authority over a company and owes it legal duties. An advisory board has no authority and, as a rule, no legal duties: it gives advice, and the directors and management decide what to do with it. A non-executive director sits on the board without running part of the business. A fractional executive does the opposite: they run a function, part time, inside the management team.

These four seats solve different problems, and mixing them up is one of the most common mistakes growing companies make. This guide explains each one, how they compare, where a fractional executive fits, and when to use which.

What Is a Board of Directors?

The board of directors is the group legally responsible for a company. It sets direction, approves major decisions such as budgets, fundraising and acquisitions, hires and oversees the CEO, and answers to shareholders.

Directors owe legal duties to the company. In the US these are fiduciary duties, mainly the duty of care and the duty of loyalty, set by state law. In the UK the Companies Act 2006 sets out seven general duties, including promoting the success of the company, exercising independent judgement and avoiding conflicts of interest. In Australia the Corporations Act sets duties of care and diligence, good faith and proper use of position and information.

Breaching those duties can bring personal liability, which is why directors usually ask for directors and officers (D&O) insurance.

Source: Companies Act 2006, Part 10, Chapter 2

What Is an Advisory Board?

An advisory board is an informal group of experienced people who give a company advice. It has no legal authority, cannot make binding decisions and is not set up under company law. Founders usually create one to borrow expertise, open doors to customers or investors, or add credibility.

Because the role is advisory, members generally owe the company no fiduciary duties and face limited liability. That changes if an adviser starts acting like a director, for example by approving transactions or directing how the business is run. In the UK and Australia, someone whose instructions the directors are used to following can be treated as a shadow director, with a director's duties and risks.

Advisory board members are usually paid in equity, a fee per meeting, or not at all. They typically meet a few times a year and help between meetings when asked.

What Is a Non-Executive Director?

A non-executive director, often called an NED or an independent director, is a full member of the board who is not part of the management team. They attend board meetings, vote on decisions and bring independent challenge, but they do not run any part of the business day to day.

Legally, a non-executive director has the same duties as any other director. Their job on the board is oversight and challenge, and the legal responsibility is just as real. In the UK and Australia the term is common in companies of every size. In the US, the equivalent is usually called an independent or outside director.

Where Does a Fractional Executive Fit?

A fractional executive sits on the management side. They are a senior operator, such as a CFO, COO or CRO, who works part of the week inside the business, owns a function and is accountable for results. They attend leadership meetings, manage people and deliver the work. Our guide to what fractional work is covers the model in full.

Some fractional executives are also appointed to the board, most often a fractional CFO in a smaller company. When that happens they hold two roles at once: they run their function as an executive, and they carry the full legal duties of a director. Working part time does not reduce those duties. In Australia that includes personal liability for insolvent trading, so a fractional executive taking a board seat should have D&O insurance in place.

That makes a fractional executive very different from an adviser or a director. An adviser suggests. A director oversees and decides on the big questions. A fractional executive does the work of running a function, and often reports to the board on it.

Here is how the four seats compare side by side.

Legal Duties and Liability for Each Role

This is where the differences matter most, so it is worth being precise.

Directors and non-executive directors

All directors, executive or not, carry the full legal duties of the role in their jurisdiction. They can be personally liable if they breach them, so D&O insurance and a clear understanding of the company's position are standard.

Advisory board members

Advisers generally owe no fiduciary duties and face limited liability. The main risk is drifting into a director's role. Keep advisers advising, keep decisions with the board, and put the arrangement in a short written agreement.

Fractional executives

A fractional executive who is not appointed to the board is generally not a director. Their obligations come mainly from their contract. Senior roles can still carry legal duties, though. In Australia, the duty of care and diligence extends to officers, which can include senior executives who take part in significant decisions, as the High Court confirmed in Shafron v ASIC in 2012. In the US, corporate officers such as a CFO generally owe fiduciary duties too.

If a fractional executive holds an officer title, both sides should check whether the company's D&O policy covers them. Our guide to the contract terms founders get wrong covers what else to put in writing.

This section is general information and not legal advice. Duties depend on your jurisdiction, your constitution and the exact arrangement, so check your position with a lawyer.

Which One Do You Need?

Start with the problem you are trying to solve.

→ You need someone to do the work. If a function is missing a senior leader, such as finance, operations or marketing, a fractional executive fills the gap. Advice alone will not run a month-end close or a sales team.

→ You need expertise and connections. If you want a sounding board, industry knowledge or introductions, an advisory board is a light, low-cost way to get them.

→ You need independent oversight. If investors, lenders or your own growth call for stronger governance, add a non-executive director to the board.

→ You need formal decision-making. Major decisions about strategy, capital and leadership belong with the board of directors.

Many growing companies use more than one. A common pattern is a small board with one non-executive director, an advisory board of two or three specialists, and a fractional CFO who runs finance and prepares the board pack.

Can One Person Fill More Than One Seat?

Yes, and it happens often. An adviser who knows your market well may become a fractional executive once the business needs that work done properly. A fractional CFO usually attends board meetings to present the numbers, without becoming a director.

When one person holds two seats, be clear about which one they are in at any moment. An adviser who starts directing the team is taking on management responsibility without the accountability that comes with it. A fractional executive who is also appointed to the board takes on a director's duties as well as their operating role. Put the arrangement in writing, and check how equity, fees and insurance work for each role.

How to Set Up an Advisory Board Well

If an advisory board is the right fit, a little structure makes it far more useful:

→ Decide what you need from it, such as industry insight, customer introductions or fundraising help, and recruit for those gaps.

→ Keep it small. Three to five advisers is easier to run and to get value from.

→ Agree terms in writing: expected time, confidentiality, compensation and how long the role lasts.

→ Meet on a regular rhythm and send a short update beforehand so meetings are about decisions you are weighing.

→ Review it every year, and thank and rotate advisers whose expertise you no longer need.

How Fractionus Can Help

Fractionus matches growing businesses with vetted fractional and interim executives across the US, the UK and Australia. If the gap in your business is a function that needs senior leadership and delivery, submit a brief and we will send a shortlist of vetted executives within 48 hours. Under 3% of applicants are accepted. You can read more about how we vet executives.

If you are still deciding between models, our guides to fractional executives, consultants and contractors and fractional versus interim executives cover the other common comparisons.

Frequently Asked Questions

What is the difference between an advisory board and a board of directors?

A board of directors has legal authority over a company, makes binding decisions and owes the company legal duties. An advisory board has no legal authority, gives non-binding advice and generally owes no fiduciary duties. Directors decide; advisers advise.

What is an advisory board?

An advisory board is an informal group of experienced people who give a company advice, expertise and connections. It has no legal authority and is not set up under company law. Members are usually paid in equity, a meeting fee, or not at all.

Do advisory board members have legal liability?

Generally very little, because they advise and do not decide. The risk rises if an adviser starts acting like a director, for example by approving transactions or directing the business. In the UK and Australia they can then be treated as a shadow director. This is general information, so check your position with a lawyer.

What is a non-executive director?

A non-executive director is a full board member who is not part of the management team. They vote on board decisions and provide independent oversight, and they carry the same legal duties as other directors. In the US the equivalent is usually called an independent or outside director.

Is a fractional executive a member of the board?

They can be. Most fractional executives sit in the management team and report to the board without being directors. Some, often fractional CFOs, are formally appointed as directors. They then carry the full legal duties of a director as well as their operating role, so D&O insurance and a clear written agreement matter.

Should a startup have an advisory board or a fractional executive?

It depends on the gap. If you need advice, expertise or introductions, an advisory board is a light option. If you need a function run, such as finance, operations or marketing, you need a fractional executive who will do the work and own the results. Many startups use both.

How are advisory board members paid?

Common options are a small equity grant, a fee per meeting or a modest retainer. Some advisers take no payment, particularly early on. Whatever you agree, put it in writing along with the expected time commitment and confidentiality terms.