Undue Influence vs Unconscionable Conduct: Key Differences

When you’re running a small business, agreements happen fast. A supplier needs you to sign today. A customer is pushing back on your standard terms. A potential investor says “it’s just a formality” and wants documents executed immediately.

Most of the time, that’s just business. But sometimes, pressure, vulnerability, or unfair bargaining tactics can cross a legal line.

Two concepts that often come up in disputes are undue influence and unconscionable conduct. They can look similar on the surface (someone says they were pushed into a deal), but they’re different legal ideas, with different warning signs and different ways to respond.

This guide breaks down the difference between undue influence and unconscionable conduct in practical terms, so you can spot risk early, negotiate confidently, and build stronger, enforceable agreements.

Why This Difference Matters For Your Contracts And Sales

If someone later claims they were subject to undue influence or unconscionable conduct, it can create serious commercial consequences for your business, including:

• The contract being set aside (in other words, treated as if it never happened),
• Delays and legal costs while the dispute is resolved,
• Refunds, repayments, or compensation if a court finds unfairness,
• Reputational damage (especially if you deal with consumers or smaller counterparties), and
• Knock-on issues across other agreements (for example, if a “core” deal is challenged, funding, supply or delivery commitments can unravel).

Even if you believe you acted properly, these disputes are often fact-heavy. The details of your communication, your process, and the other party’s circumstances can really matter.

That’s why understanding the difference between undue influence and unconscionable conduct isn’t just “legal theory” - it’s part of good business risk management.

What Is Undue Influence In A Business Context?

Undue influence is about pressure or influence that overcomes a person’s ability to make a free and informed decision.

In plain English: it’s where someone signs because they felt they couldn’t really say no, not because the deal itself is necessarily unfair on its face.

How Undue Influence Typically Shows Up

Undue influence often arises where there’s a relationship with a strong element of trust, dependency, authority, or emotional reliance.

In a business setting, it might look like:

• A key supplier “leans on” a small customer who depends on them to keep trading,
• A business owner is pressured by a more experienced party (for example, a financier, consultant, or adviser) and signs without proper reflection,
• A director signs documents because another director (or a founder with more control) insists, and
• A family business scenario (common in small business) where one party is accustomed to following the wishes of another.

Key Features Of Undue Influence

While every case turns on its facts, undue influence typically focuses on:

• The relationship between the parties (trust, dependence, authority),
• The conduct used to procure the agreement (pressure, insistence, manipulation), and
• The quality of consent (whether the person truly chose freely).

It’s not just “hard negotiation” or “commercial pressure”. In business, it’s normal to have deadlines and leverage. Undue influence is more about pressure that’s improper and affects the person’s ability to decide for themselves.

Practical Examples For Small Businesses

Here are a few simplified examples to illustrate the concept:

• Founder pressure: One co-founder insists the other sign a personal guarantee “for the good of the business”, threatens to cut them out if they don’t, and rushes signing without time for advice.
• Adviser influence: A trusted adviser strongly pushes a small business owner to sign a contract that benefits the adviser, saying they’ll “handle everything” and discouraging independent legal review.
• Dependence-based pressure: A business that relies on a single supplier is told they must sign new terms immediately or lose supply, and the supplier uses personal intimidation rather than legitimate commercial negotiation.

Each of these examples is really about whether there was a free and informed decision, given the relationship and conduct involved.

What Is Unconscionable Conduct Under Australian Law?

Unconscionable conduct is about serious unfairness in how a stronger party deals with a weaker or vulnerable party.

In practice, it’s often associated with the stronger party taking advantage of the other party’s disadvantage, in a way the law considers unacceptable.

In Australia, unconscionable conduct can arise under:

• general law (judge-made principles), and
• statute, including the Australian Consumer Law (ACL) (for example, the ACL prohibits unconscionable conduct in trade or commerce, and can apply in both consumer and some business-to-business dealings).

Because it can apply in both consumer and business-to-business relationships, unconscionable conduct is a major risk area for small businesses - not only as a potential claimant, but also as a business that wants to avoid unintentionally crossing the line.

If you’re already thinking about customer-facing fairness issues, it can also be helpful to keep your warranties and returns approach aligned with Australian expectations under the Australian Consumer Law warranty rules.

What Counts As A “Special Disadvantage”?

Unconscionable conduct usually involves one party having a disadvantage that affects their ability to protect their interests, and the other party knowingly exploiting it.

Disadvantage can include things like:

• limited English or low literacy,
• lack of business experience,
• financial distress or urgent need for funds,
• disability or illness, or
• significant power imbalance paired with a lack of practical alternatives.

The disadvantage doesn’t have to be dramatic, but it does need to be meaningful enough that it affects the person’s ability to make or negotiate decisions.

What Unconscionable Conduct Often Looks Like In Business

Unconscionable conduct tends to involve the stronger party:

• creating or leveraging pressure in a way that’s harsh or oppressive,
• withholding key information or using confusing documentation,
• refusing reasonable requests for time, explanation, or advice (especially where they know the other party is struggling), or
• using “take it or leave it” tactics in circumstances where the other party has no realistic ability to walk away.

This is different from simply driving a hard bargain. The law generally allows tough commercial negotiation. The issue is when it becomes so unfair that it’s against conscience to enforce it.

Unconscionable conduct issues also overlap with broader compliance risks, like misleading sales practices. If you want to sanity-check your marketing and contracting approach, it’s worth being aware of the elements of misleading or deceptive conduct too.

The Difference Between Undue Influence And Unconscionable Conduct (With A Quick Comparison)

The easiest way to remember the difference between undue influence and unconscionable conduct is this:

• Undue influence is mainly about how consent was obtained (pressure/influence over the decision).
• Unconscionable conduct is mainly about taking advantage of disadvantage (serious unfairness in the process or outcome).

Side-By-Side Comparison

• Main focus
  Undue influence: whether one party’s influence overcame the other’s free will.
  Unconscionable conduct: whether one party exploited the other’s disadvantage in an unacceptable way.
• Common setting
  Undue influence: relationships of trust/dependence (including within a business partnership or family business).
  Unconscionable conduct: situations with a clear vulnerability + power imbalance (finance, urgent cashflow, confusing terms, lack of alternatives).
• Is an unfair deal required?
  Undue influence: not necessarily - even a “normal” deal can be challenged if consent wasn’t free.
  Unconscionable conduct: it often involves harsh or one-sided terms, but the key issue is unfair exploitation of disadvantage.
• What a court looks at
  Undue influence: the relationship, the pressure, whether the person could decide independently.
  Unconscionable conduct: the disadvantage, whether it was known (or ought reasonably to have been known), and whether the stronger party took unfair advantage.

In the real world, the same facts can sometimes give rise to both claims. For example, if a stronger party pressures a vulnerable business owner who is in financial distress, you may see allegations framed as both undue influence and unconscionable conduct.

That’s why the best approach for business owners is preventative: build clean contracting processes that support genuine consent and commercial fairness.

Red Flags For Business Owners (And How To Protect Your Deal)

If you’re a small business owner, you can reduce your risk of disputes by watching for a few practical red flags - both when you’re asking someone to sign, and when someone is asking you to sign.

Undue Influence Red Flags

• Rushed signing without time to read or ask questions.
• Discouraging independent advice (“don’t bother with lawyers, it’s standard”).
• Pressure linked to the relationship (guilt, threats of exclusion, personal leverage).
• One decision-maker dominating (for example, where another director or partner is clearly not comfortable but is being pushed through it).

Unconscionable Conduct Red Flags

• You know the other party is vulnerable (cashflow crisis, language barrier, no experience) and you’re still pushing hard.
• Complex, confusing, or hidden terms that the other party isn’t realistically understanding.
• “No choice” tactics in circumstances where the other party genuinely can’t walk away.
• Harsh terms combined with pressure (for example, extreme fees, unilateral variations, or punitive termination rights).

Practical Steps To Reduce Risk (Without Killing The Deal)

You don’t need to turn every transaction into a month-long process. But you do want a clear paper trail showing fair dealing and genuine consent.

• Give reasonable time to review (even 24–48 hours can help, depending on complexity).
• Encourage independent advice for higher-risk agreements (especially guarantees, security interests, long-term exclusivity, or big commitments).
• Use plain-English summaries for key commercial terms, alongside the formal contract.
• Keep negotiation records (emails or signed term sheets) so there’s clarity on what was agreed and why.
• Avoid pressure language (“sign now or else”) unless it’s genuinely a standard commercial deadline, and even then, keep it factual and professional.

Strong documentation also helps you manage other fairness-related risks. For instance, clear service terms can reduce disputes about cancellation fees and customer expectations, especially where your business needs a cancellation fees policy that’s enforceable and proportionate.

How These Issues Play Out In Common Small Business Situations

Most small business disputes around these concepts arise in a handful of recurring scenarios. If you can spot these early, you’re much more likely to prevent a costly problem later.

1. Supplier And Distribution Agreements

If you rely on a major supplier (or you are the major supplier), the dependency dynamic can become risky.

A supplier pushing a smaller business into a one-sided agreement may attract unconscionable conduct allegations, especially if the smaller business has no real alternative and the supplier knows this.

On the other side, if you’re the smaller business being told to sign “new terms” immediately, it can be a cue to slow down and get advice before committing.

2. Loans, Security, And Personal Guarantees

Small business funding often comes with personal guarantees, charges over assets, or other forms of security.

These are common and not automatically problematic. The risk increases when:

• the guarantor doesn’t understand what they’re signing,
• there’s a relationship of trust (for example, within a family company), or
• there is pressure to sign without advice.

If your business is taking security or requiring guarantees, ensuring a clean, transparent signing process can reduce the likelihood of later arguments about undue influence or unfair exploitation.

3. Co-Founders, Share Sales, And Internal Buyouts

Deals between co-founders can be surprisingly emotional, even when the business is doing well.

A scenario where one founder has more information, more leverage, or greater control can create dispute risk if the other founder later says they were pressured or taken advantage of.

If you’re changing ownership, a well-drafted constitution and clear decision-making processes can make a real difference. This is where having a Company Constitution in place (and keeping it updated) can support cleaner governance and reduce ambiguity.

4. Customer Contracts And “Standard Form” Terms

Many small businesses rely on standard terms (for example, online terms, subscription terms, or standard service agreements). That’s normal and often necessary.

The risk is when a customer (or another small business customer) can show:

• they were vulnerable or disadvantaged, and
• your business used that vulnerability to lock them into harsh terms or unfair outcomes.

Having properly drafted customer-facing terms is a practical way to reduce uncertainty and set expectations. Depending on your model, that might involve a tailored Service Agreement so everyone is clear on scope, payment, variations and termination.

Key Takeaways

• The difference between undue influence and unconscionable conduct matters because both can put your contracts at risk, but they focus on different problems: undue influence is about impaired consent, while unconscionable conduct is about unfair exploitation of disadvantage.
• Undue influence often involves a relationship of trust or dependence and pressure that prevents a truly free decision, even if the deal looks “normal” on paper.
• Unconscionable conduct usually involves one party knowingly taking advantage of another party’s vulnerability or special disadvantage in a way the law considers seriously unfair.
• Clean contracting processes help: give reasonable time, encourage independent advice for higher-risk deals, and keep communication professional and well-documented.
• If you’re using standard terms, signing guarantees, renegotiating supplier arrangements, or doing founder buyouts, it’s worth getting the documents and process right early so your agreements are more enforceable and disputes are less likely.

If you’d like help reviewing or drafting an agreement to reduce the risk of undue influence or unconscionable conduct claims, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.