Section 188 explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
Authority is rarely listed act by act. Section 188 supplies the missing links in two paragraphs: an agent authorised to do an act may do every lawful thing necessary to do it, and an agent authorised to carry on a business may do every lawful thing necessary for the purpose, or usually done in the course of conducting that business.
An agent having authority to do an act has authority to do every lawful thing which is necessary in order to do that act. An agent having authority to carry on a business has authority to do every lawful thing necessary for the purpose, or usually done in the course, of conducting such business. The Act's illustrations: an agent to recover a debt may adopt any legal process necessary and give a valid discharge; a ship-builder's agent may buy timber and hire workmen.
The text
Section 188 has two paragraphs.
First: "An agent, having an authority to do an act, has authority to do every lawful thing which is necessary in order to do such act."
Second: "An agent having an authority to carry on a business, has authority to do every lawful thing necessary for the purpose, or usually done in the course, of conducting such business."
Paragraph one: authority to do an act
The first paragraph extends a specific authority to what it takes to carry it out. The tests are two. The thing must be lawful, and it must be necessary in order to do the act. Convenience is not enough on the words of the section; necessity is the word used.
Authority in an emergency is a separate matter, covered in our article on sections 189 and 190.
Paragraph two: authority to carry on a business
The second paragraph is wider. It covers every lawful thing that is either of these:
- "necessary for the purpose" of the business; or
- "usually done in the course" of conducting such a business.
The second limb is important: it brings in the usual practice of the trade. The agent need not show that each step was strictly necessary if it is something usually done in conducting that kind of business.
| Authority given | What follows | Test |
|---|---|---|
| To do an act | Every lawful thing necessary to do the act | Lawful and necessary |
| To carry on a business | Every lawful thing necessary for the purpose, or usually done in the course of conducting it | Lawful and either necessary or usual in that business |
If you give an agent a task, this section helps you see which steps come with it. If you want to fix the boundaries yourself, an agreement drafting adviser can help you write them down.
The Act's own illustrations
(a) Recovering a debt. A is employed by B, residing in London, to recover at Bombay a debt due to B. A may adopt any legal process necessary for the purpose of recovering the debt, and may give a valid discharge for the same. This is paragraph one at work: authority to recover includes the lawful steps necessary to recover, including a valid discharge.
(b) The ship-builder's business. A constitutes B his agent to carry on his business of a ship-builder. B may purchase timber and other materials, and hire workmen, for the purpose of carrying on the business. This is paragraph two: running the business carries with it the usual purchases and hiring.
Both illustrations are phrased as what the agent "may" do. They do not say that the agent may do something unlawful, or something unconnected with the task.
A modern example (ours, not the Act's)
Gurpreet appoints Anil as his agent to collect a pending invoice of a fixed amount from a customer in Ludhiana. Anil may take the lawful steps necessary to collect it: send reminders, meet the customer, and issue a receipt (a discharge) on receiving payment. He may not, on the strength of this authority alone, use a method that is unlawful, and the section does not turn a collection task into a general power to run Gurpreet's business.
Separately, Gurpreet appoints Meena to carry on his small online garment shop while he travels. She may do what is necessary for the purpose, or usually done in the course of conducting such a shop: respond to buyers, pack and ship orders, and buy packaging. If it is usual in the trade to arrange returns with a courier, she may do that too. Whether a particular act is "usual" for the trade is a question of fact that the section leaves open.
What can the parties change?
Section 188 sets out the extent of authority where the principal has given authority to do an act or to carry on a business. The principal can, in what he says (express authority under section 187), narrow what the agent may do. The section's own words are about what the authority includes; it does not say whether an express restriction on a particular step overrides the second paragraph. A careful principal who wants a limit, such as a cap on purchases or a ban on giving discharges above an amount, should write it clearly and tell the persons dealing with the agent. Our article on section 187 covers how authority arises in the first place.
Practical points
- Principals: think about what steps your task will need, and write down any you do not want the agent to take.
- Agents: check that each step is lawful and either necessary or usual for the business.
- Third persons: a step that is usual in that kind of business is more likely to be within authority, but ask if the transaction is out of the ordinary.
- Remember the limit "lawful": no authority arises under this section to do an unlawful act.
Need help defining what your agent may do?
If you employ sales agents, collection agents or business managers, our agreement drafting service can help you set out the acts they may do and the limits that apply, so that you do not depend only on what is "necessary" or "usual". Other laws may also apply to specific industries.
Key takeaways
- An agent authorised to do an act may do every lawful thing necessary to do it (s.188, first paragraph).
- An agent authorised to carry on a business may do every lawful thing necessary for the purpose, or usually done in the course of conducting such business (second paragraph).
- Two Act illustrations: recovering a debt (with a valid discharge) and a ship-builder's purchases and hiring.
- The thing must be lawful in all cases.
- The section does not say whether an express restriction overrides the second paragraph, so write limits clearly.
Read next
- Section 187: express and implied authority defined
- Sections 189 and 190: authority in an emergency and when an agent cannot delegate
- Sections 191 to 195: sub-agent and substituted agent
Disclaimer: Based on the text of the Indian Contract Act, 1872 as consulted on 1 October 2026. Many questions under this Act turn on case law and on the wording of the particular contract, which this article does not cover. It is general information, not legal advice; check the official text and take advice before acting.