A business letter format is essential for professional communication and typically includes several key components. Start with your contact information and the date at the top, followed by the recipient's contact details. Use a formal salutation, such as "Dear [Name]," and structure the body into clear, concise paragraphs. Begin with an introduction stating the purpose of the letter, followed by detailed information or requests in the main paragraphs, and conclude with a polite closing. End the letter with a formal closing phrase, such as "Sincerely," followed by your signature and typed name. For more detailed guidelines, visit Business letter format.