Business Letter

Definition of business letter

Business letters are formal letters used for business-to-business, business-to-client, or client-to-business correspondence. There are a number of elements to a business letter.

Type of business letter

- Letter of Inquiry

- Letter of Reply

- Letter of Order

- Letter of Acknowledgment

- Letter of Giving Instruction

- Letter of Claim

- Letter of Adjustment

- Letter of Sales

- Letter of Application

- Letter of Advertisement

The following pictures show what a one-page business letter should look like. There are three accepted styles. The horizontal lines represent lines of type.

 

Part of business letter 

Date & Sender's Address 
The first line of a business letter should be the date the letter was written or completed. Directly underneath the date is the sender's address. Do not include the sender's name here. Sometimes the sender's address is listed on a letterhead, in which case the address should not be repeated under the date. 

Recipient's Address 
If known, the recipient's address should include the name of the person to whom the letter is directed. You should also include a title (Mr., Mrs., Ms., or Dr.) in front of the name. If you are including the country with the address, capitalize the country name

Salutation The salutation should be the same as the name written with the recipient's address, followed by a colon. It is fine to only use the first name if you personally know the person and you typically refer to her by her first name. If you do not know the recipient's name, it is fine to use the salutation, "To Whom it May Concern." 

Body 
The body of the letter should be formally written. Use single-spaced lines, except between paragraphs, where a double-spaced line should be inserted. The closing paragraph should summarize what was previously stated throughout the letter. 

Closing 
To close the letter, insert a phrase such as "Thank you" or "Best regards," followed by a comma. Insert four lines between the closing and sender's name. This space will be used for your signature once the letter is printed.

source : http://www.ehow.com/facts_5024015_business-letters-definition.html, english bell online