Business Letter Template (US)

Use this for formal correspondence, not every message

A business letter works best where the recipient may need to route the message internally or keep it as a record. It is useful for customers, suppliers, landlords, insurers, lenders, professional advisers, government offices, applicants, partners and internal stakeholders. It is less useful for quick scheduling, casual updates, marketing blasts or transactions that need a signed agreement.

The template lets the writer choose a purpose: request, response, confirmation, complaint or general business correspondence. The body changes enough to stop a complaint sounding like a thank-you note, while the letterhead and reference structure stays consistent.

Format is not ceremony; it is routing information

The top of the letter should tell a reader exactly who sent it, who should receive it, how to reply and what matter it concerns. A subject or reference line saves the recipient from guessing. A date matters because deadlines, service levels, warranty periods and internal escalation all run from something.

For mailed letters, USPS Publication 28 is a useful address-format reference. For email or PDF letters, a clear sender block still matters because the letter may be forwarded away from the original email envelope. The format should help the message survive forwarding, printing and filing.

State facts before demands

A formal business letter is strongest when the body follows a simple order: context, facts, requested action, deadline and contact route. Start with why you are writing. Then state the facts in a neutral way. Then say what you want the recipient to do and by when. Only then add attachments, escalation language or courtesy lines.

That order prevents the two most common defects in generic templates: opening with a vague compliment and ending without a clear ask, or opening with a demand before the recipient understands the facts. The template's purpose branches keep the tone proportionate.

Be careful with claims, promises and legal notices

A business letter can become evidence. If it says payment will be made, a product is certified, a refund is approved, an employee is promised work, a customer has no rights, or a partner has authority, someone may rely on it. Avoid words such as guaranteed, approved, exclusive, final or compliant unless they are accurate and authorized.

If the letter is actually a notice required by a contract, statute or regulation, use the specific notice form and delivery method instead. For example, a breach of contract demand should use the breach letter page, and a formal cancellation policy belongs on the cancellation policy page. This page is for general formal correspondence.

Choose the delivery record based on the risk

Many business letters can be sent by ordinary email. Higher-risk letters should be sent through a method that proves delivery or at least proves sending: certified mail, courier, portal receipt, email delivery log, or a copy retained in the customer record. The method should match the importance of the message and any contract notice requirement.

The template includes optional delivery-record wording, enclosures and cc fields. Use them when the letter needs a file trail. Do not use them just to make a casual letter look more severe than it is.

Email business letters need email-rule awareness

If the letter is sent as a commercial email, CAN-SPAM may apply. The FTC says the law has no business-to-business exception and that commercial email needs truthful routing information, non-deceptive subject lines, a physical postal address and opt-out handling where required. If the message is transactional or relationship content, keep that content at the beginning and do not bury it under promotion.

That is why this template separates the formal letter text from optional email footer wording. The business letter should remain clear even after it is pasted into an email body.

Letter section guide

Sender block

Shows legal or trading name, postal address, phone, email and contact person.

Recipient block

Names the recipient, organization, department and address so the letter can be routed.

Date and reference

Fixes the timing of the message and links it to an account, order, project, application or file.

Subject line

Summarizes the matter in plain words without turning the letter into marketing copy.

Purpose paragraph

Tells the recipient immediately whether the letter is a request, response, confirmation, complaint or general update.

Facts and background

Records the neutral facts the recipient needs before deciding what to do.

Requested action

States the action, answer, payment, document, meeting or decision requested.

Deadline

Optional. Gives a date for response without inventing a legal deadline.

Enclosures and cc

Lists attached documents and copied recipients for the file record.

Delivery record

Optional. Records how the letter was sent when proof matters.

US business letter checklist

A general business letter is usually not governed by one special statute, but the channel, claims and purpose can bring rules into play.

• Use accurate sender and recipient information

  A letter that may be mailed, filed or forwarded should have a complete sender block and recipient block. USPS Publication 28 is a practical source for address standardization.

  USPS Publication 28

• Do not use deceptive commercial email subject lines

  If the letter is sent as commercial email, FTC guidance says header information must be truthful and subject lines must accurately reflect the message.

  FTC CAN-SPAM compliance guide

• Include opt-out and postal address where required

  Commercial email may need a valid physical postal address and a clear opt-out mechanism. The FTC says CAN-SPAM has no business-to-business exception.

  FTC CAN-SPAM compliance guide

• Substantiate claims and qualifications

  Do not put unsupported results, certifications, testimonials, price claims or guarantees into a business letter. Any necessary qualification should be clear and close to the claim.

  FTC Advertising FAQ

• Use the specific notice document when one is required

  If a contract or law requires a particular notice method, content or deadline, a general business letter is not enough. Use the specific form and delivery method.

• Make customer communications accessible where applicable

  For public-facing businesses, ADA effective-communication guidance is a useful reminder to offer readable, usable communication and an assistance contact where needed.

  ADA.gov effective communication

• Keep proof of sending when the message matters

  For deadlines, disputes, complaints, account decisions, contract administration or high-value requests, retain a copy and a delivery record.

How to write a business letter

1. Choose the purpose. Select request, response, confirmation, complaint or general correspondence.
2. Complete the routing details. Add sender, recipient, address, date, reference and subject so the letter can be filed and forwarded.
3. Write the context and facts. Explain why you are writing and state the relevant facts before asking for action.
4. State the action and deadline. Tell the recipient what you need, when you need it and who to contact.
5. Add enclosures and cc only if needed. List attachments, copied people and delivery method where the record matters.
6. Review for unintended promises. Remove unsupported claims, accidental guarantees, fake authority and legal conclusions before sending.

Frequently asked questions

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