Here are some of the most commonly used abbreviations in letter writing. Indent the first line of each paragraph one-half inch. Resume Format Line Spacing Resume Format Business Letter Format Resume Format Business Letter 20 Business Letter Templates. Best business letter format . Since you are writing a business letter it is important that you use the proper format. On the left-hand side of your business letter you should list your contact info. Business Letter is a letter which is used by organizations to communicate in a professional way with customers other companies clients shareholders investors etc. Leave a blank line after salutation. Name of Company. Despite the formal letter format business letters can be written in a friendly tone. Remember to include any deadlines or instructions for next steps. But you should always make sure that your letter is clear and. Name of Company. And finally your signature. Skip a line and type the date so that it l...