Your Cart
Stare Decisis, Ratio Decidendi, and Obiter Dicta

Stare Decisis, Ratio Decidendi, and Obiter Dicta

Stare decisis, ratio decidendi, and obiter dicta are all important legal concepts that are used in common law jurisdictions such as England and Wales. They are related to the way that legal precedents are created and applied by courts.


Stare decisis is a Latin phrase that means "let the decision stand." It is the principle that a court is bound by the decisions of or higher courts in the same hierarchy and by its own previous decisions. This means that when a court is deciding a case, it must follow the legal precedent set by higher courts or its own previous decisions in similar cases. This ensures consistency and predictability in the law.


Ratio decidendi is another Latin phrase that means "the reason for the decision." It refers to the legal principle or rule that is used by a court to reach its decision in a case. The ratio decidendi is the part of the decision that is binding on lower courts in the same hierarchy and on future cases with similar facts. It is the legal principle that provides the basis for the decision.


Obiter dicta is a Latin phrase that means "things said by the way." It refers to comments or opinions made by a judge in a court decision that are not essential to the decision or the ratio decidendi. Obiter dicta may be persuasive, but they are not binding on lower courts or future cases. They are simply the judge's personal views on the matter and are not part of the legal precedent.


In short, stare decisis, ratio decidendi, and obiter dicta are all important legal concepts used in common law jurisdictions. Stare decisis ensures consistency and predictability in the law by binding lower courts to the decisions of higher courts and their own previous decisions. Ratio decidendi is the legal principle or rule that is binding on lower courts and future cases with similar facts. Obiter dicta are comments or opinions made by a judge that are not binding on lower courts or future cases, but may be persuasive.


Study with us to smash your AL/AS Law exam now:

Contract Law

Criminal Law

English Legal System

Public Law

Tort Law

Trusted by thousands of law students worldwide

Where are our students from?

Yale University

Council of Europe

Baker Mckenzie 

University of Chicago

Columbia University

New York University

University of Michigan 

INSEAD

University College London (UCL)

London School of Economics (LSE)

King’s College London (KCL)

University of London

University of Manchester

University of Zurich

University of York

Brandeis University

University of Exeter

University of Sheffield

Boston University

University of Washington

University of Leeds

University of Law

Royal Holloway, University of London 

Birkbeck, University of London

SOAS, University of London

University of Kent

University of Hull

Queen’s University Belfast

Toronto Metropolitan University

Hong Kong University of Science and Technology

Your perfect companion for open-book and closed-book exams

Diagrams and Charts

Our carefully designed diagrams and charts will guide you through complex legal issues.

Clear and Succinct Definitions

Key concepts are concisely defined to help you understand legal topics quickly.

Statutory Provisions

Statutory provisions are provided side by side with legal concepts to help you swiftly locate the relevant legislation.

Case Summaries

We have summarised important cases for you so that you don't need to read long and boring cases.

Rules and Exceptions

Rules and exceptions are clearly listed so that you know when a rule applies and when it doesn't.

Terminology

Legal terms and key concepts are explained at the beginning of each chapter to help you learn efficiently.

Case Law

Case law is provided side by side with legal concepts so that you know how legal principles and precedents were established.

Law Essay Guide

You will learn essential law exam skills and essay writing techniques that are not taught in class.

Problem Question Guide

We will show you how to answer problem questions step by step to achieve first-class results.

Structured Explanations

Complex legal concepts are broken down into concise and digestible bullet point explanations.

Legal Research

You will learn legal research techniques with our study guide and become a proficient legal researcher.

Exam-focused

All essential concepts, principles, and case law are included so that you can answer exam questions quickly.