Section 45 IEA: Opinions of experts
Indian Evidence Act, 1872
Section 45 IEA at a Glance
Section 45 IEA deals with opinions of experts. From 1 July 2024 it is replaced by Section 39(1) BSA.
Section 45 IEA Bare Act Text
45. Opinions of experts
When the Court has to form an opinion upon a point of foreign law or of science, or art, or as to identity of handwriting or finger impressions, the opinions upon that point of persons specially skilled in such foreign law, science or art, or in questions as to identity of handwriting or finger impressions are relevant facts.
Such persons are called experts.
Illustrations(a) The question is, whether the death of A was caused by poison.
The opinions of experts as to the symptoms produced by the poison by which A is supposed to have died, are relevant.
(b) The question is, whether A, at the time of doing a certain act, was, by reason of unsoundness of mind, incapable of knowing the nature of the act, or that he was doing what was either wrong or contrary to law.
The opinions of experts upon the question whether the symptoms exhibited by A commonly show unsoundness of mind, and whether such unsoundness of mind usually renders persons incapable of knowing the nature of the acts which they do, or of knowing that what they do is either wrong or contrary to law, are relevant.
(c) The question is, whether a certain document was written by A. Another document is produced which is proved or admitted to have been written by A.
The opinions of experts on the question whether the two documents were written by the same person or by different persons, are relevant.
Source: Section 45, Indian Evidence Act, 1872
Section 45 IEA in Simple Words
Section 45 of the Indian Evidence Act, 1872 lets a court consider expert opinions on specific technical subjects. These opinions are relevant facts (facts that a party can present in court to help decide an issue).
The rule applies when the court must form an opinion on foreign law, science, or art. It also covers questions about identifying handwriting or matching finger impressions. People with special skill in these subjects are called experts.
The illustrations show how the rule works. In a suspected poisoning death, a specialist can state what symptoms that poison produces. When mental capacity during an act is disputed, an expert can explain what the symptoms of that person show. That opinion can address unsoundness of mind (a mental condition that stops someone from understanding an act or knowing it is wrong or unlawful).
For disputed writing, a party can produce another document accepted or proved as written by that individual. A specialist can then give an opinion on whether the same writer or different writers wrote both documents.
When Section 45 IEA Applies
- The court needs to form an opinion on foreign law, science, art, handwriting identity, or finger impressions.
- A person has special skill in the relevant subject of foreign law, science, art, handwriting, or finger impressions.
- That skilled person, called an expert, gives an opinion on the point before the court.
Example of Section 45 IEA
Section 45 IEA in the BSA
Section 45 IEA is now covered under Section 39(1) BSA.
Section 45 of the Indian Evidence Act, 1872 became Section 39(1) of the Bharatiya Sakshya Adhiniyam, 2023 on 1 July 2024. "Or any other field" was added, so experts are no longer limited to foreign law, science, art, handwriting and finger impressions. IEA Section 45A is now sub-section (2).
View detailed comparison (IEA 45 vs BSA 39(1)) →FAQs on Section 45 IEA
What is Section 45 IEA?▼
Section 45 of the Indian Evidence Act, 1872 states when the court can treat the opinion of an expert as a relevant fact. It covers opinions on foreign law, science, art, handwriting identity, and finger impressions given by people with special skill in those subjects.
Who counts as an expert under Section 45 IEA?▼
A person with special skill in foreign law, science, art, identifying handwriting, or matching finger impressions counts as an expert. The Act does not list formal degrees or titles, only special skill in the subject.
Can a handwriting specialist compare a disputed document with a known sample under Section 45 IEA?▼
Yes. When another document is accepted or proved as written by a specific person, the opinion of an expert on whether the same writer wrote both documents is a relevant fact.
What is Section 45 IEA in BSA?▼
Section 39(1) BSA. Section 45 IEA became Section 39(1) BSA on 1 July 2024, with the phrase or any other field added to the list of subjects for expert opinions. In addition, Section 45A IEA became Section 39(2) BSA.
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Sources: Bare Act Text, Indian Evidence Act, 1872 ·