How Courts Interpret Ambiguous Clauses in Commercial Contracts
A practical explainer for business leaders and legal teams
Contracts are meant to clarify expectations. But in commercial settings, they often do the opposite. Language that seemed straightforward during negotiation can take on multiple meanings when disputes arise. So what happens when a clause is ambiguous? How do courts decide what the parties actually intended?
Here’s how the law approaches it and what you should keep in mind when drafting or reviewing your agreements.
Courts don’t just look at the literal words. They ask:
What would a reasonable person, with access to the same background knowledge as the parties at the time of signing, have understood this clause to mean?
This “objective intention” test is central to modern contract interpretation. If the clause still lends itself to two plausible readings, courts typically lean toward the one that aligns with business common sense the interpretation that makes commercial logic in the context of the deal.
The UK Supreme Court’s Six-Factor Framework
In a landmark clarification, the UK Supreme Court laid out six factors that guide interpretation:
1. Natural and ordinary meaning of the words
2. Other relevant provisions in the contract
3. Overall purpose of the clause and the agreement
4. Facts and circumstances known to both parties at the time
5. Commercial common sense
6. Exclusion of subjective intentions or post-hoc explanations
This approach encourages judges to read contracts holistically—not in isolation.
Textualism vs Contextualism:
Textualism
focuses strictly on the words used, assuming they reflect the parties’ intent.
Contextualism
looks beyond the text to the broader commercial setting, the nature of the deal, and the realities of negotiation.
Sophisticated contracts drafted with legal teams and detailed clauses may lend themselves to textual analysis. But in less formal agreements, or where drafting was rushed or uneven, context becomes crucial.
The Indian Perspective: Harmonious Reading and Contra Proferentem
In Sohom Shipping Pvt. Ltd. v. The New India Assurance Co. Ltd. (Civil Appeal No. 2323 of 2021), the Indian Supreme Court reiterated that ambiguous terms must be read in harmony with the rest of the agreement. If ambiguity persists, courts apply the Contra Proferentem Rule—interpreting the clause against the party that drafted it.
This principle is especially relevant in standard-form contracts, where one party (often the insurer, employer, or service provider) controls the language.
What This Means for You
Whether you’re drafting, negotiating, or enforcing a contract, here are a few practical takeaways:
Clarity is king:
Avoid vague or layered language, especially in critical clauses.
Context matters:
Courts will consider the commercial backdrop, not just the clause in isolation.
Standard-form caution:
If you’re using templated contracts, be mindful of how ambiguity may be interpreted against you.
Document intent:
Where possible, record shared assumptions or deal context in term sheets or preambles.
Contract interpretation isn’t just about grammar it’s about fairness, commercial logic, and the realities of doing business. When clarity fails, courts step in with a toolkit designed to uncover what the parties truly meant. The best safeguard? Thoughtful drafting, informed negotiation, and a clear understanding of how the law reads between the lines.