Want to write a professional business letter, but aren't sure where to begin? This guide on how to write a business letter will help you learn to create a polished, smart-looking document that will impress any business executive.

If you are addressing a business on a professional level, it is imperative that you familiarize yourself with the correct formatting of a business letter. It is not difficult to learn, but a business letter has a different layout than a casual note, and will require a more formal approach.

To start, go to to the top center, right or left-hand side of the page (your choice). Then type in the following, with each item directly underneath the last:

1. Your full name
2. Your address
3. The date, with no punctuation (for example, 5 July 2009)

• Obviously, you should not send your home address to someone who you know nothing about, or do not fully trust. When in doubt, use a business address, a P.O. box, or no address at all (although if you expect a return letter you will need to include some sort of mailing address).

Start with your salutation: "Dear Mr./ Ms. so-and-so," or "Dear Sir or Madam" if the recipient is unknown. If a title such as Dr. or President applies, use it.

Then proceed to write your message. Do not indent, just double-space between paragraphs. Keep yor words clear, and to the point. Business letters are not flowery, they serve a specific purpose and tend not to elaborate unless absolutely necessary. Keep in mind that offices tend to be busy, and whomever is reading your letter may not have time to sift through an avalanche of prose.

At the end of your letter, sign off with a "Sincerely," Yours," or "Regards" followed by your full name. You may choose to sign your name in ink underneath the typed name, but this is not necessary.

It is vital that you look over your letter for any mistakes. Even the best writers make the occasional typo, and any errors on your part will make you look less professional and possibly cause you to lose credibility.