Best Style Guides for Business Writing

Mary Cullen
Post by Mary Cullen
Originally published February 13, 2021, updated June 3, 2024

The best style guide for your organization will depend on the type and application of your writing. In this post we share our recommendations for the best style guides depending on your needs.

Best for most organizations

The Associated Press Stylebook
57th edition (2024-2026)

The Associated Press Stylebook, first published in 1977, clarified the news organization's rules on grammar, spelling, punctuation, and usage. Now in its 57th edition, the Stylebook is the standard style guide for most U.S. newspapers, magazines, public relations, and consulting firms. It is also the most adopted style guide for blogs and websites, which has led to its wide adoption for all business writing. 

We recommend this style guide for business writing.


Adopted less commonly in business, but useful

The Gregg Reference Manual:
A Manual of Style, Grammar, Usage, and Formatting, 11th Edition

William A. Sabin, McGraw-Hill, 2011

The Gregg Reference Manual is intended for anyone who writes, edits, or prepares material for distribution or publication. For over fifty years this manual has been recognized as the best style manual for business professionals who want to master the on-the-job standards of business professionals.


Best for proofreading

The Chicago Manual of Style, 17th Edition

The University of Chicago Press, 2017

“Chicago” is the bible of book publishers. We refer to “Chicago,” but it is a specialist’s volume. Unless you’re a professional editor or proofreader, this style guide is not needed by most business writers.


For evolving language

Garner's Modern American Usage, 3rd Edition

Bryan A. Garner, Oxford University Press, 2009

I like this resource because it includes a "Language-Change Index," which indicates how well accepted a term is, ranging from Stage 1, widely considered incorrect, to Stage 5, universally accepted as correct. Because business writing language is ever-evolving, this is a helpful guidebook to determine if a usage is now acceptable.


For UK and US English style difference

The Economist Style Guide, 11th Edition

This guide contains a very helpful section on American and British English. 

American and British business writing is essentially identical. There are spelling and minor punctuation differences, that this text illustrates perfectly. By the way, you should construct documents in your style. If you are British and writing to an American, for example, use British English, rather than American English. Do not use idiomatic expressions or vague phrasings, of course. There is never any significant misunderstanding between UK and US English, as long as one avoids idiom and writes clearly. Trying to adopt a style and voice that is not your own rings false.   


Create an internal style guide 

Do you wish to compile style guidelines, unique to your organization? For example, you may have specific terms you want to be used with consistency in all documents. Many organizations compile an internal style guide and share it with all employees.

Many thanks to the ASTD LinkedIn group for sharing a generic internal style guide, which you can use as a model. Yet, another reason you should join LinkedIn if you have not yet done so! Creating your own style guide is a great option if you want to choose rules from other style guides that offer conflicting advice.

Download a copy of this PDF example: Business Writing Style Guide Internal Template. 

Mary Cullen
Post by Mary Cullen
Originally published February 13, 2021, updated June 3, 2024
Mary founded Instructional Solutions in 1998, and is an internationally recognized business writing trainer and executive writing coach with two decades of experience helping thousands of individuals and businesses master the strategic skill of business writing. She excels at designing customized business writing training programs to maximize productivity, advance business objectives, and convey complex information. She holds a B.A. in English from the University of Rhode Island, an M.A. in English Literature from Boston College, and a C.A.G.S. in Composition and Rhetoric from the University of New Hampshire.