external aids to interpretation
Internal aids are found within the statute itself: the long title, preamble, headings, marginal notes, definitions, illustrations, provisos and schedules. External aids lie outside it: the historical background and the mischief the Act was meant to cure, reports of law commissions and committees, the statement of objects and reasons, parliamentary debates, earlier and later statutes on the same subject, dictionaries, foreign decisions and the General Clauses Act, 1897.
Indian courts once refused to look at debates, but now use them to understand the context. In K.P. Varghese the Supreme Court relied on the Finance Minister's budget speech to read down a tax provision. External aids help resolve ambiguity; they cannot override clear words.
Example
The court relied on the Law Commission report, an external aid to interpretation, to identify the mischief the 2018 amendment sought to remedy.
In Indian law
- K.P. Varghese v. Income-tax Officer, Ernakulam, 1981 INSC 160
- General Clauses Act, 1897
See also
ejusdem generis · expressio unius est exclusio alterius
Read more in the study notes
- Meaning of statute and purpose of interpretation (Interpretation of Statutes and Principles of Legislation)
- External aids I: legislative history, debates, objects and reasons, commission reports (Interpretation of Statutes and Principles of Legislation)
- External aids II: dictionaries, translations, statutes in pari materia, contemporanea expositio (Interpretation of Statutes and Principles of Legislation)
- Interpretation of statutes: an introduction to the rules, context and fringe meaning (Legal Methods)
- Doctrinal legal research: working, merits and limits (Research Methodology)