Business letters are formal written communications between business entities, governed by the Indian Contract Act, 1872, and form the foundation of commercial correspondence in professional practice.
## Core concept
A business letter is a formal document that: - Initiates, continues, or concludes a business transaction - Creates legally binding obligations when it constitutes a valid offer or acceptance - Must contain essential elements: sender's details, date, recipient's details, subject, body, and signature - May constitute an offer under Section 2(a) of the Indian Contract Act, 1872, or acceptance under Section 2(b)
Legal significance: A business letter is not merely a communication—it may create contractual relationships. Courts treat business correspondence as evidence of intent to contract.
## Key elements of a valid business letter
- Sender identification: Full name, designation, company name, address
- Date: Essential for determining timeline of offer/acceptance
- Recipient details: Complete address and identification
- Subject line: Clear indication of the letter's purpose
- Body: Clear, concise statement of intention (offer, acceptance, confirmation, demand)
- Signature: Authorized person's signature; in business context, may be printed for official letters
- Reference number: Helps track correspondence
- Enclosures/Attachments: If any documents are attached
## Types of business letters (exam focus)
| Type | Purpose | Legal Effect | |------|---------|--------------| | Offer letter | Proposes terms of contract; Section 2(a) ICA | Creates offer; recipient can accept | | Acceptance letter | Agrees to offered terms; Section 2(b) ICA | Forms contract if unconditional and communicated | | Confirmation letter | Confirms verbal discussions or transactions | Evidence of agreement; may conclusively prove contract terms | | Demand letter | Requests payment or performance; often precedes legal action | Creates evidence of notice; shows good faith attempt to resolve | | Notice letter | Provides formal notice (e.g., termination, breach) | Discharges obligations under Section 62 ICA or creates liability evidence |
## Important legal principles
- Mirror image rule: Acceptance must be unconditional and match the offer exactly. Conditional acceptance is a counter-offer (Section 7, ICA).
- Communication of acceptance: Acceptance is effective only when communicated to the offeror (Section 4, ICA). Posting a letter = communication.
- Postal rule: If acceptance sent by post, it takes effect when posted, not when received (implied in Section 4, ICA; *Household Fire Insurance v. Grant*).
- Consideration: Business letters must reflect exchange of value to form binding contract (Section 2(d), ICA).
## Common exam applications
- Distinguish offer from invitation to treat: A letter requesting quotation is invitation to treat; a quotation letter is an offer.
- Formation of contract via correspondence: Multiple letters exchanged may form a complete contract.
- Evidence in disputes: Business letters are primary evidence in commercial disputes; courts interpret them strictly.
- Revocation: An offer letter can be revoked before acceptance; revocation is effective only when received by offeree (Section 5, ICA).
## Worked example
Fact: ABC Ltd. sends a letter to XYZ Ltd. offering 100 units of goods at ₹500 per unit, "valid for 7 days." XYZ Ltd. accepts 3 days later by posting a letter. On day 5, ABC Ltd. sends a fax revoking the offer.
Issue: Is there a binding contract?
Analysis: - ABC's letter = offer (Section 2(a)) - XYZ's posted acceptance on day 3 = valid acceptance (postal rule applies; effective on posting) - Contract formed on day 3 before revocation on day 5 - Conclusion: Binding contract exists. Revocation cannot undo already-formed contract.
## Common mistakes to avoid
- Assuming all business letters are contracts: Letters may be mere correspondence (invitation to treat, request for information).
- Ignoring unconditional acceptance requirement: Qualified or conditional acceptance = counter-offer, not acceptance.
- Overlooking postal rule implications: Acceptance posted but not received = valid acceptance in India.
- Forgetting consideration: Both parties must exchange value; unilateral gift letters are not contracts.
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For exam preparation: Practice identifying offer vs. acceptance in letter sequences; understand postal rule implications; memorize Section 2(a), 2(b), 4, 5, 7 ICA with examples.