Answered By: Kate Anderson, Business Librarian
Last Updated: Jul 12, 2018     Views: 296901

Block format is typically used for business letters. 

In block format, the entire text is left aligned and single spaced. The exception to the single spacing is a double space between paragraphs (instead of indents for paragraphs).

An example block style letter is shown below and can be linked to in our eBook, The AMA Handbook of Business Writing, page 455.

This block format in letter shows that all addresses, salutations, etc. are entirely left-justified.

Another sample block-style letter is provided below from the eBook Everyday Letters for Busy People. (Click on the link to the left or the image below to go directly to this section in the eBook!) Note: Your block letter will likely not include the "Account Number" line, "Attention: Customer Service Manager", or "Receipt enclosed".

Another block format sample letter showing that all text is left-justified.

If you have been asked to complete a project in both block style and APA style, ask your instructor for clarification. It is likely that s/he wants you to cite your sources using APA style and format the letter using block style.

*APA does use block quotations for quotes of 40 or more words, but this is something entirely different from block letter format. If you need information about block quotations, NOT block letters, visit:


Comments (3)

  1. I had a confusion regarding the blocked and semi blocked style of paragraphing but this web site helped me alot.
    by Nelson Stephen on Sep 13, 2017.
  2. Is it triple spaced between headings?

    Sara, Librarian Reply: Hi Kyla, the short answer to your question is no. Rasmussen College uses APA style for most things, and triple spaced does not follow the APA Style formatting structure.
    by Kyla M on Oct 12, 2017.
  3. Thank you for helping me write my resume for my job.
    by Anon on Sep 10, 2019.

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