Chapter X - Agency
Section 198
Section 198: Knowledge needed for ratification
A valid ratification cannot be made with materially defective knowledge of the facts.
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Need advice on Section 198?
This article is for general information. Refer to the Indian Contract Act, 1872 official text for the official provisions. If you need professional advice for your situation, contact Bizeneed.
Statutory text
Bare law
No valid ratification can be made by a person whose knowledge of the facts of the case is materially defective.
Rule and business relevance
The person adopting the unauthorised act must not lack or misunderstand material facts in the manner described. Evidence of disclosures and knowledge matters.
Limits and related provisions
A signature labelled ratification is not a substitute for the knowledge condition. Distinguish immaterial detail from facts material to the transaction.
Hypothetical business example
Hypothetical example: A principal approves an unauthorised deal without being told a material liability attached to it. The knowledge defect must be considered before treating ratification as valid.
Practical decision flow
Identify the material facts of the unauthorised transaction.
Record what was disclosed and known when ratification was attempted.
Resolve any material knowledge defect before relying on adoption.
Check the applicable legal framework
This guide explains the central provision. Applicable State amendments, the agreement, transaction date and other governing laws can affect its application. Check the current legal framework before relying on it for a commercial decision.
Practical checklist
Do
- Identify the material facts of the unauthorised transaction.
- Record what was disclosed and known when ratification was attempted.
- Resolve any material knowledge defect before relying on adoption.
Avoid
- A signature labelled ratification is not a substitute for the knowledge condition. Distinguish immaterial detail from facts material to the transaction.
Glossary
- Material fact
- A fact significant to the case and purported ratification.
- Defective knowledge
- The knowledge problem that prevents valid ratification under this provision.
Frequently asked questions
Is a ratification label enough?
No. The person’s material knowledge must be considered.
Does every missing minor detail necessarily decide validity?
The section concerns knowledge that is materially defective.
What evidence is useful?
The information supplied and the person’s knowledge when adopting the act.
Need help applying this provision to your situation?
Contact BizeneedLast updated 10 October 2026