Fiduciary Duties in Australia: A Practical Guide for Directors and Founders

If you run a small business, it’s easy to think “fiducary duties” (often spelled fiduciary duties) are only for big corporates with boards, investors and complex structures.

In reality, fiducary duties come up all the time for Australian founders and business owners - especially once you have a company, co-founders, outside funding, or you’re making decisions where someone else relies on you to act loyally and fairly (for example, the company, other shareholders, or a principal who has authorised you to act for them).

These duties matter because they sit at the heart of “doing the right thing” as a director or decision-maker. When you understand your fiducary obligations early, you can set up decision-making processes that protect your business, reduce disputes with co-founders, and help you avoid personal liability.

Below, we break down what fiducary duties mean in Australia, who owes them, what they look like day-to-day, and practical ways to stay compliant as you grow.

What Are Fiducary Duties (And Why Do They Matter For Small Business)?

In simple terms, fiducary duties are duties of loyalty and good faith that apply where one person (the fiduciary) has power or discretion to act for another, and the other person is vulnerable to that power being misused.

In business, the most common example is a company director who has power to make decisions for the company.

Even though many people spell it as “fiducary”, the commonly used legal spelling is fiduciary. You’ll see both in search results, but they refer to the same underlying concept: a duty to put the relevant interests first, avoid conflicts, and not misuse your position.

Fiducary Duties vs General “Good Business”

It’s good business to act ethically and transparently. Fiducary duties go further: they can create legal consequences if you don’t meet the required standard.

For example, if you (as a director) use a business opportunity for yourself instead of your company, or you approve a transaction that benefits you personally without proper disclosure, that can become a fiducary duty problem - even if you genuinely believed it was “not a big deal”.

Fiducary Duties vs Directors’ Statutory Duties

In Australia, directors have duties under legislation (particularly the Corporations Act) as well as duties that come from the general law (judge-made law).

In practice, these can overlap. A single decision can potentially involve:

• fiducary (fiduciary) duties (loyalty, conflicts, profits); and
• statutory directors’ duties (care and diligence, good faith, misuse of position/information, insolvent trading risk, etc.).

The key takeaway: you don’t need to “pick” which duties apply. As a business owner or director, you want a decision-making approach that covers both.

Who Owes Fiducary Duties In Australia?

Fiducary duties can arise in different business relationships, but for small businesses the most common ones include:

• Company directors owing duties to the company (not to individual shareholders as a general rule).
• Officers and senior decision-makers who act like directors (sometimes called “de facto” or “shadow” directors in more complex situations).
• Agents who have authority to act for a business (for example, someone negotiating contracts on your behalf) - see the law of agency principles that often sit behind these relationships.
• Partners in a partnership can owe each other duties of good faith and loyalty (though partnerships have their own legal framework and the detail can vary).

Directors, Shareholders And Founders: A Common Misunderstanding

Founders often wear multiple hats: director, shareholder, employee, and “the person who does everything”. That’s exactly why fiducary duties can get confusing.

One practical way to reduce confusion is to be clear about roles, decision-making rights, and what happens when founders disagree. That clarity usually sits in your governance documents - like a Company Constitution and, where there are multiple owners, a Shareholders Agreement.

If you’re still unsure how these roles differ in practice, it helps to understand the distinction between a director and an owner (shareholder): director vs shareholder.

Key Fiducary Duties For Directors (In Plain English)

While the legal detail can get technical, most fiducary duties for directors can be understood through a few practical rules you can apply in everyday decision-making.

1. Act In Good Faith And In The Best Interests Of The Company

This is the “north star” duty. As a director, you must make decisions for the benefit of the company as a whole, not primarily for yourself, your family, or one particular shareholder group.

For small businesses, this is where founders sometimes get stuck: you may feel like you and the company are the same thing. Legally, a company is a separate entity, and as a director you are expected to put the company’s interests first when acting in that capacity.

In some circumstances (particularly where a company is insolvent or nearing insolvency), directors may also need to consider the interests of creditors as part of acting in the company’s best interests.

2. Avoid Conflicts Of Interest (And Disclose Them Properly)

A conflict of interest can arise when your personal interests, or duties to someone else, could influence your decisions for the company.

Common small business examples include:

• your company hiring a supplier that you (or your spouse) owns;
• your company leasing premises from an entity you control;
• you being a director of two companies doing business with each other;
• you negotiating a deal where you receive a personal benefit (like a commission) outside the company.

Conflicts aren’t always “wrong” - but failing to manage them properly can be.

3. Don’t Misuse Your Position Or Company Information

If you have access to confidential information or decision-making power, you can’t use that advantage to gain a personal benefit or cause harm to the company.

For example, if you learn the company is about to win a contract and you “jump ahead” to secure that opportunity privately, that’s a classic fiducary red flag.

4. Don’t Make Secret Profits Or Take Corporate Opportunities

Directors generally must not profit from their position unless the company has properly authorised it.

In practice, this can come up where a director:

• takes a business opportunity they found through their role;
• receives a “kickback” from a supplier;
• charges the company a fee through another entity without appropriate disclosure and approval.

This is one of the most common areas where a “handshake arrangement” in a small business later turns into a dispute.

5. Use Proper Process (Not Just Good Intentions)

One of the biggest traps for founders is thinking “I meant well, so it’s fine.” Fiducary duties are heavily about process - disclosure, approvals, recording decisions, and demonstrating that you considered the company’s interests.

That’s why governance documents and clear contracting matter. It’s also why directors’ decisions should ideally be recorded, even in a small company (for example, minutes or written resolutions).

Common Fiducary Duty Risk Areas For Founders And Small Business Owners

Knowing the duties is one thing. The real value is spotting where issues tend to arise in real businesses.

Founder “Side Projects” And Competing Businesses

It’s common for founders to run more than one venture, or to explore new ideas while the main business grows.

The fiducary risk is where the new project competes with the company or uses the company’s confidential information, contacts, time, or resources.

If you’re considering a side project, a good starting checklist is:

• Does it overlap with what the company does (or plans to do)?
• Did the opportunity come to you because of your role at the company?
• Are you using company assets, staff, or IP to build it?
• Have you disclosed the conflict and got proper approval?

Related-Party Deals (Family Members, Trusts, Or Entities You Control)

Small businesses often use related-party arrangements for legitimate commercial reasons (for example, convenience or asset ownership arrangements). But these are also the kinds of deals that can be scrutinised if there is a dispute later, so it’s important to document them carefully and manage conflicts properly.

A classic example is money moving between a director and the company. If you’ve ever borrowed from the company, repaid expenses, or had personal costs paid by the business, you should understand how a director loan typically works and how to document it properly.

If there are tax implications to how a related-party arrangement is structured, you should also get tailored advice from a qualified accountant or tax adviser (this article isn’t tax advice).

Raising Capital Or Bringing In A New Co-Founder

When you bring in investors or a new co-founder, expectations change. You’ll likely need clearer governance, decision-making rules, and an agreed approach to conflicts and approvals.

It’s also where a founder’s fiducary mindset becomes critical. You may no longer be the only person exposed to risk - other people’s money is on the line, and they will (reasonably) expect decisions to be made for the company’s benefit.

Customer Communications And “Overpromising”

Fiducary duties are not the only risk for directors. What you say publicly about your business can create legal exposure, including under the Australian Consumer Law (ACL).

If you’re advertising, negotiating with customers, or communicating about performance, timelines or product capabilities, you should also be mindful of how misleading statements can create broader legal risk. For directors and founders, it’s often worth understanding the misleading or deceptive conduct rules because director decision-making and customer communications often overlap.

Contracting Shortcuts

When you’re busy building a business, it’s tempting to move fast and “sort the paperwork later.” The issue is that unclear contracts can blur responsibilities and approvals - which can make fiducary disputes more likely.

At a minimum, your agreements should clearly set out:

• who is responsible for what;
• how decisions are approved;
• what happens if there’s a dispute or someone exits; and
• how confidential information is handled.

If you’re unsure what makes an agreement enforceable in the first place, it helps to understand what makes a contract legally binding so you’re not relying on assumptions.

How Do You Comply With Fiducary Duties In Practice? (A Simple Framework)

Most directors don’t breach fiducary duties because they’re trying to do the wrong thing. It usually happens because they didn’t recognise a conflict, didn’t document decisions, or didn’t put proper approvals in place.

Here’s a practical framework you can apply to reduce risk.

1. Separate “You” From “The Company” In Decision-Making

Even if you own 100% of the company, start building the habit of asking:

• Is this decision in the best interests of the company?
• Would this look reasonable if an investor reviewed it later?
• If this ended up in a dispute, could we show we followed a fair process?

This mindset is especially important as you grow and add shareholders, lenders, or key employees.

2. Identify Conflicts Early (Then Disclose And Manage Them)

A good conflict process doesn’t need to be complex. For many small businesses, the essentials are:

• declare the conflict (in writing is best);
• ensure the conflicted person doesn’t control the approval process; and
• record why the arrangement is still in the company’s interests (for example, it’s at market rates).

This is also where your company’s governance documents can help. A well-drafted constitution and shareholder arrangements can include decision rules that make conflict management much easier in real life.

3. Keep Records Of Key Decisions

You don’t need to turn your startup into a bureaucracy, but you do want a paper trail for major decisions, such as:

• entering high-value contracts;
• taking on debt;
• issuing shares or changing ownership;
• approving related-party transactions;
• major hiring or redundancies; and
• significant changes in business direction.

Good records help demonstrate good faith and proper process if your decision is later questioned.

4. Put The Right Legal Documents In Place Early

Fiducary issues often flare up when expectations were never clearly agreed in writing. Depending on your business model, the “core documents” often include:

• Company Constitution: sets out core governance and company rules (Company Constitution).
• Shareholders Agreement: clarifies ownership, decision-making, exits, and dispute pathways (Shareholders Agreement).
• Employment Contracts: clearly define duties, confidentiality, and expectations when you hire staff (Employment Contract).

Not every small business needs every document on day one, but having the right foundations can prevent the kind of “people problems” that become expensive legal problems later.

5. Know When To Get Advice

If you’re dealing with any of the following, it’s worth getting specific advice early:

• you’re planning a deal with a related party (family member, trust, or your other business);
• you’re bringing on investors or issuing shares;
• there’s tension between founders or directors;
• the company is under cashflow pressure (director duties and insolvent trading risk can become more acute); or
• you’re unsure whether something is a “conflict” or a “corporate opportunity”.

That’s not about slowing you down - it’s about protecting the business you’re building and keeping decision-making clean as you scale.

Key Takeaways

• Fiducary duties (commonly spelled fiduciary) are duties of loyalty and good faith that commonly apply to directors and other decision-makers in Australian businesses.
• For founders, fiducary issues often arise in real life through conflicts of interest, side projects, related-party deals, and “informal” arrangements that were never properly documented.
• Acting in the company’s best interests is not just about intention - it’s also about process, disclosure, approvals, and record-keeping.
• Clear governance documents (like a Company Constitution and Shareholders Agreement) help reduce founder disputes and make fiducary compliance easier to manage day-to-day.
• Practical compliance means spotting conflicts early, documenting key decisions, and getting advice when a decision affects ownership, money, or control.

If you’d like help setting up the right governance or reviewing a decision with fiducary duty risk, you can reach Sprintlaw at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.