Good Faith in Commercial Contracts: What UK Businesses Need to Know

Whether you’re negotiating with a supplier, arranging partnerships, or finalising deals with clients, “good faith” pops up again and again in the world of business contracts. It might sound straightforward (after all, who wouldn’t want honesty and fairness in a business relationship?), but UK law treats good faith a little differently than you might expect.

Understanding what good faith really means-especially in commercial contracts-can help UK business owners protect themselves from surprises and avoid costly disputes. If you’re about to sign a new contract or just want to avoid problems down the track, it pays to know how good faith works and how to draft your agreements accordingly. In this guide, we’ll unpack what you need to know, explain the risks of ignoring good faith, and show you where you can get expert help.

Let’s dive into the essentials of good faith in commercial contracts, so you can keep your business safe and relationships strong.

What Is Good Faith in UK Commercial Contracts?

Good faith is a concept that generally means parties should act honestly, fairly, and openly with each other-without trying to mislead or undermine the deal. In some countries, acting in good faith is a fundamental legal requirement, but in the UK, it’s a little more nuanced.

The UK does not have a general duty of good faith in all business contracts. Instead, the obligation to act in good faith must usually be:

• Expressly written into a contract;
• Implied by law in certain situations (like employment contracts or long-term “relational” agreements); or
• Recognised where the courts believe it’s necessary to make the contract workable.

This means, unless your agreement specifically says so, UK contract law doesn’t automatically require parties to act in good faith-but there are some notable exceptions. Understanding these exceptions is crucial for anyone negotiating or drafting commercial contracts in the UK.

Why Does Good Faith Matter in Business Contracts?

It’s easy to see how acting in good faith can help build trust and maintain healthy business relationships.

But beyond trust, there are some clear legal and commercial reasons why you should know where you stand on good faith:

• Reduces Disputes: Setting expectations for honest and fair behaviour makes agreements easier to enforce and less likely to break down.
• Builds Reputation: Being known for fairness and reliability attracts better partners, suppliers, and clients.
• Protects Against Unenforceable Clauses: Some contract clauses may not be enforceable if the court finds they were used in bad faith or weren’t sufficiently clear.
• Legal Compliance: Certain relationships (like employment or franchise agreements) might carry an implied duty to act in good faith, even if it isn’t in writing.

When Is Good Faith Implied in UK Contracts?

Although good faith isn’t automatically implied in every UK business contract, courts will sometimes read a good faith obligation into your agreement-especially for certain types of ongoing or “relational” agreements. Examples include:

• Joint venture agreements
• Long-term supply or distribution contracts
• Franchise agreements
• Employment contracts

These situations typically involve a high degree of trust, collaboration, or shared purpose. Courts may decide the parties must behave fairly-otherwise, the whole relationship could break down over time.

If you’re involved in these longer-term business relationships, it’s especially important to understand how good faith might impact your legal obligations. For more on the specific types of commercial agreements, see our guide on joint venture agreements and franchise agreements.

Should You Include Good Faith Clauses in Your Contracts?

Because the UK doesn’t presume good faith in all business contracts, it’s usually wise to include a clear “good faith” clause if you want the obligation to apply. Here’s what to consider:

• Clarity: A written good faith clause removes any doubt about the parties’ expectations and can help prevent disputes in ambiguous situations.
• Enforceability: Courts are more willing to enforce a duty of good faith if it’s expressly stated in your contract.
• Scope: You can decide what good faith means in your context-whether that’s negotiating openly, not misleading, disclosing certain information, or acting reasonably.
• Limitations: A good faith clause does not override express terms in the contract. It also won’t excuse you from complying with other legal requirements (like competition law or data protection).

Not every contract needs a good faith clause, but where you’re in an ongoing business relationship or want to set a standard of behaviour, it can be a smart move to include one.

What Does a Good Faith Clause Look Like?

There’s no single “standard” form, but a good faith clause typically states that each party agrees to act “in good faith” or “honestly, fairly, and reasonably” in performing their obligations.

Examples might include:

• “Each party shall act in good faith towards the other at all times under this agreement.”
• “The parties shall cooperate in good faith and deal honestly with each other in performing their obligations and resolving disputes under this contract.”

It’s also important to specify which actions or decision-making the clause applies to (for example, price changes, options to renew, or termination rights). This lowers the risk of misunderstanding or unenforceable expectations.

For tips on writing strong contract terms, check out our advice on essential contract clauses.

What Happens If Someone Breaches Good Faith?

If a party acts in bad faith (for example, by deliberately misleading, withholding essential information, or sabotaging the deal), they could be in breach of contract-if a good faith obligation applies.

Consequences might include:

• The other party terminating the agreement
• Being ordered to pay damages for loss caused by the bad faith conduct
• Loss of trust and business reputation

But remember-the Court won’t enforce a good faith duty unless it’s written into the contract or clearly implied. That’s why having the right legal advice and ensuring clarity in your contract is so important. If you’re unsure, our guide on breach of contract can help you navigate what counts as a breach and your options for responding.

How Can You Protect Your Business With Good Faith?

Good faith works both ways. As a business, here’s how you can proactively use it to enhance and protect your relationships and reduce legal risk:

• Be Honest and Transparent - In negotiations and performance, clearly communicate your intentions, limitations, and any issues as soon as they arise.
• Document Agreements - Don’t rely on handshake deals. Always put agreements-especially “good faith” expectations-in writing. See our guide to writing clear contracts for help.
• Specify What “Good Faith” Means - Define it in your agreement if possible. For example, spell out cooperation, sharing of key information, reasonableness, or non-interference.
• Review Regularly - If your business relationships last for years, review and update your contracts as things change to make sure the terms (and any good faith duties) are still appropriate.
• Get Expert Advice - Every business is different. Speaking with a legal expert ensures you’re not leaving yourself exposed to unintended obligations or disputes.

What Are the Risks of Ignoring Good Faith in UK Contracts?

If you ignore good faith-or fail to include or address it in your commercial agreement-you might run into problems like:

• Unexpected Disputes: If the other side acts in a way you think is unfair-but the contract doesn’t clearly say what’s acceptable-you could be left without legal recourse.
• Relationship Breakdowns: Poor communication or a perceived lack of honesty can sour business relationships, making future deals difficult and damaging your reputation.
• Ineffective Agreements: Courts may refuse to enforce ambiguous or broadly worded “good faith” duties, leaving both parties uncertain about their rights.
• Increased Legal Costs: Without clarity, even minor disagreements can escalate-costing you time, money, and lost business opportunities.

Taking the time to clarify and discuss good faith upfront will help you avoid these risks-and set the foundation for strong long-term partnerships.

How Does Good Faith Relate to Other UK Laws?

Even if your contract doesn’t include a good faith requirement, you still need to comply with other key UK laws, like:

• The Consumer Rights Act 2015 - Protects consumers by requiring goods and services to be as described, fit for purpose, and supplied with reasonable care. If you trade with consumers, you must meet these fairness standards.
• Data Protection Act 2018 and UK GDPR - If you handle personal data, you must process it lawfully, fairly and transparently-another type of “good faith” duty in all but name. For more on this, see our GDPR compliance guide.
• Employment Law - Employers owe a duty of trust and confidence (sometimes described as “good faith”) to employees. This is an implied legal requirement, even if it’s not in the agreement.

So, while general good faith isn’t a “catch-all,” many UK statutes bring in similar ideas of fairness, honesty, and reasonable conduct in business dealings.

What Common Misunderstandings Exist Around Good Faith?

Because it sounds intuitive, it’s easy to misunderstand how good faith works in the UK. Let’s clear up a few myths:

• It’s Not Automatic: UK law does not presume good faith applies to commercial contracts-unless you write it in or it’s implied by law.
• It’s Not Unlimited: Good faith doesn’t override clear contractual terms or excuse poor business performance.
• It’s Not Always Enforceable: Vague good faith clauses may be difficult to enforce. Specific obligations (like cooperation, communication, or dispute resolution) are more likely to stand up in court.
• It’s Not Just “Being Nice”: Good faith is about fairness, reasonableness, and honest dealing-not agreeing to things that put your business at risk.

Whenever in doubt, get clear on what you mean by good faith, and make sure it matches your business realities.

Where Can I Get Help With Good Faith in My Contracts?

Knowing when and how to use (or avoid) good faith clauses relies on the specifics of your business, the nature of your contracts, and your commercial goals.

If you’re unsure how good faith applies to your situation-or you want a professionally drafted agreement that gives you confidence from day one-it’s wise to get tailored legal advice. Avoid using online templates or trying to draft these clauses yourself. A contract lawyer can:

• Review existing commercial contracts for good faith obligations
• Help you negotiate and draft good faith clauses suited to your industry
• Explain your risks if a dispute arises over good faith
• Support you if an agreement breaks down due to bad faith conduct

If you’re just starting out and want to know your legal foundations are strong, check out our practical guide on how to draw up a business contract in the UK.

Key Takeaways

• Good faith means acting honestly, fairly, and reasonably in contracts-but it’s not automatically implied in every UK commercial contract.
• To enforce good faith, it’s best to include an express clause-especially in long-term or collaborative business relationships.
• Vague or broad good faith clauses may be difficult to enforce. Clarify what “good faith” means for your agreement and business context.
• Ignoring good faith can lead to unnecessary disputes, legal risks, and relationship breakdowns.
• Other UK laws (like consumer protection, data protection, and employment law) require similar standards of fairness and honest dealing.
• It’s wise to get expert legal help when drafting, negotiating, or reviewing good faith clauses-so your contracts protect your business from day one.

If you’d like further guidance or need help drafting watertight commercial contracts for your business, get in touch with us at team@sprintlaw.co.uk or call 08081347754 for a free, no-obligations chat. Our friendly team is here to help you build strong, fair, and legally robust contracts-so your business can grow with confidence.