Principles of Contractual Interpretation: 3rd Edition

Authors

Richard Calnan (Author); Paul S. Davies (Author)

ISBN: 9780198897163

Published: May 2026

Format: Hardcover

Language: English

Publisher: Oxford University Press

Description

Written for the busy practitioner, this book distils the rules for constructing and interpreting contracts into ten core principles, each explored in its own chapter and illustrated with case law showing how the principle operates in practice. Now in its third edition, it has been thoroughly revised to reflect eight years of case law developments, including several landmark decisions since the previous edition.

Key Features

Distils contractual interpretation into ten core principles, each with a dedicated chapter; incorporates recent landmark case law developments since the prior edition; new sections cover the enforceability of implied terms, the scope of rectification, purposive interpretation, and the role of good faith and entire agreement clauses; written specifically with the practitioner in mind rather than as an academic treatise.

Coverage

The guiding principle of objective intention; text and context (the text, the whole text, the context); understanding words (natural meaning, ambiguity, unnatural meaning); adding words (implied terms); changing words (rectification, estoppel by convention); principles of drafting and interpretation clauses.

About the Authors

Richard Calnan and Paul S. Davies are established authorities on contract law and commercial drafting, with this title recognized as a standard practitioner reference on contractual interpretation.

Table of Contents

Prologue. I. The Guiding Principle: Objective Intention. II. Text and Context: The Text; The Whole Text; The Context. III. Understanding Words: Natural Meaning; Ambiguity; Unnatural Meaning. IV. Adding Words: Implied Terms. V. Changing Words: Rectification; Estoppel by Convention. Epilogue: Principles of Drafting, An Interpretation Clause.

Why buy this book?

Contractual interpretation disputes turn on a relatively small set of recurring principles, and this book's structure — ten principles, ten chapters, each grounded in case law — makes it fast to locate the relevant rule and the authority behind it. The third edition folds in nearly a decade of case law development, saving practitioners drafting or litigating commercial contracts from tracking those developments chapter by chapter themselves.

Keywords

contractual interpretation, contract law, contract drafting, implied terms, rectification, estoppel by convention, commercial contracts

Target Audience

Commercial lawyers, contract drafters, judges, litigators, academic law libraries

Genre

Contract Law, Commercial Law

Q&A

Q: What does Principles of Contractual Interpretation cover?
A: Ten core principles for constructing and interpreting contracts, each illustrated with the case law showing how it operates in practice.

Q: What's new in the third edition?
A: New sections on the enforceability of implied terms, the scope of rectification, purposive interpretation, and the role of good faith and entire agreement clauses, along with case law developments since the prior edition.

Q: Is this book aimed at practitioners or academics?
A: Practitioners — it's written as a concise, practical guide for lawyers drafting or litigating commercial contracts.

Q: Does the book cover rectification and implied terms?
A: Yes, each has a dedicated principle and chapter, alongside natural meaning, ambiguity, context and estoppel by convention.

Q: Who is Principles of Contractual Interpretation written for?
A: Lawyers, judges, contract drafters and litigators working on commercial contracts.

Q: Where can I buy Principles of Contractual Interpretation, 3rd Edition?
A: Available through CLNZ Books, with worldwide delivery for law firms and academic libraries.

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