A business letter is a professional written message used for workplace or organizational communication. Its purpose might be to request information, place an order, address a problem, or respond to another organization. Most follow a recognizable structure, but the exact format depends on the letter’s purpose, audience, letterhead, and the recipient’s conventions.
What is a business letter?
A business letter is a formal or professional message sent on behalf of an individual or organization. It can communicate with a customer, supplier, employer, government office, or other organization. A letter may be printed and mailed or prepared as a document for another delivery method; in either case, its job is to make the purpose and any requested action clear.
The basic components are sender details, date, recipient address, salutation, body, and closing. An enclosure note can identify documents sent with the letter. These are useful conventions rather than universal rules: company letterhead, house style, and recipient instructions may change what belongs on the page. Purdue OWL’s guide to the basic business letter explains the components and address conventions.
What are the types of business letters?
There is no single exhaustive classification that every organization uses. A practical way to distinguish letters is by their purpose. These common examples differ chiefly in what the opening explains, what evidence or context the body supplies, and what the closing asks the reader to do.
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- E-mails, memos and letters that get read—and get action
- Proposals, recommendations, and presentations that sell ideas
- Plans and reports that get things done
- Fund-raising and sales letters that produce results
- Resumes and letters that lead to interviews
- Request or inquiry letter: Ask for information, consideration, or a specific action. State what you need and, when relevant, a response deadline.
- Order letter: Place or confirm an order. Identify the goods or services, quantities, agreed terms, and any details the recipient needs to process it.
- Complaint or correction letter: Explain the problem with enough detail for the recipient to identify it, then state the remedy you are seeking.
- Response letter: Answer a request, complaint, or proposal. Address the points raised and make any decision or next step explicit.
- Apology or goodwill letter: Acknowledge an error or help maintain a business relationship. Be direct about what happened and any corrective action, without using a cheerful tone where it would be inappropriate.
- Sales letter: Present an offer relevant to the recipient and invite a defined next step.
How do you format a business letter?
For a basic US business letter, arrange the elements in this order. If company letterhead already provides the sender’s details, do not needlessly repeat them. Purdue OWL’s instructions reflect US conventions for dates and addresses, not a universal international standard.
- Sender details or letterhead: Give the sender’s address if it is not already shown on the letterhead.
- Date: In US usage, write the month, day, and year. Date conventions differ by country.
- Inside address: Add the recipient’s name, title or organization, and mailing address. Use a specific recipient when possible. For an international destination, Purdue OWL advises putting the country in capital letters on the final address line.
- Salutation: Match the greeting to the recipient named in the inside address and use a form of address appropriate to what you know about them.
- Body: State the main point early, provide only relevant context or supporting details, and make the requested action clear.
- Complimentary closing and signature: Close courteously, then provide the sender’s name and any relevant title or organization.
- Enclosure note: If documents accompany the letter, identify them below the closing so the recipient can see what was included.
Choose a layout
The three layouts below are conventions, not requirements. Purdue OWL describes block as the most common of these styles and semi-block as the least used.
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| Format | How it looks |
|---|---|
| Block | All text is left-aligned. Body paragraphs are single-spaced and separated by a blank line. |
| Modified block | Addresses and body remain left-aligned; the date and closing shift toward the center. Body paragraphs are single-spaced and separated by a blank line. |
| Semi-block | Similar to modified block, but paragraphs are indented. |
Check the organization’s letterhead, internal style guidance, and the recipient’s instructions before choosing a layout. For further detail, see Purdue OWL’s business-letter format guidance.
What should you include in a business letter?
Include the information the reader needs to understand the message and respond. A request needs a clear ask; a complaint needs enough detail to identify the problem and the remedy sought; an order needs the information required to process it. Keep supporting details relevant to that purpose rather than adding background simply because it is available.
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Organize the body so the reader encounters the main point first. Use later paragraphs for necessary context or support, then close by restating the purpose or making the next action clear. In block and modified-block layouts, separate single-spaced body paragraphs with a blank line. Purdue OWL emphasizes concision in its business-letter guidance.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How can you make a business letter clear and professional?
- Write for the reader: Choose a level of detail and vocabulary suited to the audience and purpose.
- Use a courteous, confident tone: Be sincere and direct. Purdue OWL’s tone guidance also recommends nondiscriminatory language.
- Make the next step unmistakable: If you need a reply, decision, payment, correction, or other action, say so plainly.
- Adapt tone to the message: A refusal or complaint may require a measured, serious tone; forced cheerfulness can undermine the message.
- Check names, addresses, dates, and enclosures: These details affect whether the letter reaches the right person and whether accompanying documents are accounted for.
If you are unsure whether a template fits your situation, consult an appropriate business-writing handbook. Purdue OWL recommends a handbook when a writer has questions or doubts a template’s accuracy.
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