Corporate and Other Laws · Interpretation of Statutes

Maxims, Presumptions and Subsidiary Rules of Interpretation for CA Inter

Updated 4 October 2026 · Fact-checked

Maxims are Latin rules that help courts find the meaning of unclear words. Ejusdem generis reads general words with the specific list before them. Noscitur a sociis reads a word from its neighbours. Expressio unius excludes what is not named. Identify the rule, quote the words, apply it, conclude.

Understand Maxims, Presumptions and Subsidiary Rules

A statute is written in words, and words can be unclear. Courts first read the plain words. If the meaning is still doubtful, they use rules of interpretation. Maxims and presumptions are some of the most useful of these rules.

A maxim is a short Latin principle that captures a common-sense way of reading language. Ejusdem generis means 'of the same kind'. When specific words of one class are followed by general words, the general words are limited to things of that class. Example: 'cars, buses, trucks and other vehicles' would cover similar road vehicles, not an aeroplane.

Noscitur a sociis means 'a word is known by the company it keeps'. An unclear word takes colour from the words around it. A word with more than one meaning, such as 'bank', is read in the sense of its companions. In 'bank, shore and riverside', 'bank' means the edge of a river. In 'bank, insurer and finance company', it means a financial institution. The difference from ejusdem generis: noscitur works on any doubtful word among associated words, even with no general closing phrase. Ejusdem generis needs a list of specific words followed by a general residuary phrase.

Expressio unius est exclusio alterius means 'express mention of one thing excludes others'. If a law names certain items, other items of the same kind are taken to be left out. Example: a rule allowing appeal by 'the company or its auditor' suggests that others cannot appeal. Courts use it with care, because it can defeat the real intention of the law.

A presumption is what the court assumes unless the contrary is shown. Common ones: a statute is presumed to be constitutional; the legislature does not intend injustice or absurdity; a law is presumed not to be retrospective; and a law does not take away jurisdiction of courts unless clearly stated. Subsidiary rules also cover penal statutes, which are read strictly in favour of the accused, and taxing statutes, which are read strictly: tax is levied only if the words clearly impose it.

Key rules to remember

Ejusdem generis: Specific words of a class + general residuary words → general words limited to the same class; Needs a list of two or more specific words of a genus followed by general words. Does not apply if the specific words form no class, or if the intention is wider.
Noscitur a sociis: Meaning of a doubtful word = drawn from the associated words around it; Applies when words are grouped together and one is ambiguous. No residuary phrase is needed.
Expressio unius est exclusio alterius: Express mention of one or more things → exclusion of others not mentioned; A guide, not an absolute rule. Do not apply it where it defeats the evident purpose of the law.
Presumptions: Presume: constitutional validity; no retrospective effect; no absurdity or injustice; no ouster of courts' jurisdiction; Each presumption can be rebutted by clear words or necessary implication.
Penal statutes: Strict construction; benefit of doubt goes to the accused; Where two reasonable meanings exist, the one favouring the accused is preferred.
Taxing statutes: Tax is levied only on clear words; no tax by implication, intendment or equity; Exemption provisions are generally read strictly against the claimant. Ambiguity in a charging provision favours the taxpayer.

How to solve Maxims, Presumptions and Subsidiary Rules questions

Use the same pattern for any question on maxims, presumptions or subsidiary rules. Write it in provision-facts-conclusion style so each step earns marks.

1Read the question and mark the statutory words in doubt. Quote them exactly.
2Decide the type of question: a maxim, a presumption, or a penal or taxing statute.
3For a maxim, check the structure. Specific list plus general closing words points to ejusdem generis. A doubtful word among associated words points to noscitur. A named list with no residuary words points to expressio unius.
4State the rule in one line with its meaning and, if useful, a short example.
5Apply it to the facts. Name the class, the neighbouring words or the excluded items.
6Check any limit on the rule, such as a contrary intention or a list with only one specific word.
7For penal or taxing statutes, state the strict reading and who gets the benefit of the doubt.
8Write a one-line conclusion that answers exactly what was asked.

Quickest way: Structure test for MCQs and a four-line written format

When to use it: Use under time pressure, especially for the 30 marks of MCQs and for short-note or application questions.

MCQ: look for a closing phrase like 'and other' or 'or any other'. If a specific list comes before it, choose ejusdem generis.
MCQ: if one word is unclear and sits among similar words, choose noscitur a sociis.
MCQ: if the statute names some things and the question asks about an unnamed one, think expressio unius.
MCQ: 'benefit of doubt to accused' means penal; 'no tax without clear words' means taxing.
Eliminate options that swap the meanings of the maxims. They are the usual traps.
Written answer: Rule (one line) – Meaning – Application to facts – Conclusion. Keep it to four short lines for a 3 to 4 mark question.

Common mistakes in Maxims, Presumptions and Subsidiary Rules

Treating ejusdem generis and noscitur a sociis as the same rule.
Both read words in context, so they look alike.
Fix: Ask: is there a specific list followed by general words? If yes, ejusdem generis. If it is just one doubtful word among companions, noscitur.
Applying ejusdem generis when the list has only one specific word.
Students remember the rule but not its condition.
Fix: Check that there are at least two specific words forming a class before applying it.
Saying expressio unius always applies.
It is learned as a flat rule.
Fix: State that it is an aid to construction and gives way where it would defeat the legislative intent.
Reversing the benefit of doubt in taxing and penal statutes.
Students confuse which side is favoured.
Fix: In penal laws the accused benefits. In charging provisions the taxpayer benefits. In exemption provisions the benefit of doubt goes to the revenue.
Writing the Latin phrase without meaning or application.
Students think naming the maxim is enough.
Fix: Always give the translation, the rule, and one line applying it to the given words.
Treating presumptions as rules that can never be overcome.
The word 'presumed' is read as 'proved'.
Fix: Say that a presumption stands unless clear words or necessary implication show otherwise.

Worked examples

Example 1

A statute prohibits 'the use of any house, office, room, shop or other place' for gambling. Rahul runs gambling in an open public field. Can the field be covered? Answer using the relevant maxim.

Show the solution

Provision: the words 'house, office, room, shop' are specific words followed by the general words 'other place'.
Rule: under ejusdem generis, general words following specific words are limited to the same class.
Class: the specific words all describe enclosed buildings or structures.
Application: 'other place' is read as an enclosed place of the same kind. An open public field is not of that kind.
Caveat: the rule gives way if the context shows a wider intention, and nothing here shows one.

Answer: Applying ejusdem generis, 'other place' is limited to enclosed premises like those listed, so an open field would not be covered unless a wider intention appears from the statute.

Example 2

A taxing provision imposes a levy on 'sale of goods'. The department wants to tax a transaction that is only arguably a sale, relying on the purpose of the levy. Advise using the rules for taxing statutes.

Show the solution

Provision: the levy applies to 'sale of goods'.
Rule: a taxing statute is read strictly. Tax can be levied only if the words clearly cover the transaction.
No tax by implication: the department cannot add to the charge by relying on intention or equity.
Application: if the transaction clearly falls within the words, it is taxable. If it is doubtful, the doubt in a charging provision goes to the taxpayer.
Distinction: an exemption claimed by the taxpayer is read strictly against the claimant.

Answer: The department can tax the transaction only if it clearly falls within 'sale of goods'. A doubtful charge cannot be justified by intention or equity, and the benefit of the doubt goes to the taxpayer.

Exam tips

Always translate the Latin phrase. Examiners reward the meaning plus application, not the name alone.
In MCQs, spot the structure of the words first. The maxim usually follows from the structure.
For 'distinguish between' questions, use two columns in your head: trigger, example, limit. Write them as short parallel points.
Remember limits. A line saying the maxim yields to contrary intention often earns the extra mark.
For penal and taxing statutes, state who gets the benefit of the doubt in the very first line.

Practice questions from Interpretation of Statutes

Maxims, Presumptions and Subsidiary Rules in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

CS ExecutiveMaxims and Presumptions in Interpretation

Maxims, Presumptions and Subsidiary Rules: frequently asked questions

What is the difference between ejusdem generis and noscitur a sociis?

Ejusdem generis limits general closing words to the class of the specific words before them. Noscitur a sociis explains one doubtful word from the words around it. The first needs a specific list plus general words. The second does not.

What is the meaning of expressio unius est exclusio alterius with an example?

It means that express mention of one thing excludes others. If a rule allows 'the company or its auditor' to apply, others are taken to be excluded. Courts use it carefully and not where it defeats the law's purpose.

Are penal statutes read strictly?

Yes. Penal provisions are read strictly, and if two reasonable meanings exist, the one favouring the accused is preferred. The court does not extend the offence by implication.

How are taxing statutes interpreted?

A charging provision is read strictly and tax is levied only on clear words. There is no tax by implication or equity. Exemptions are generally read strictly against the person claiming them.