Rapid City, SD Phone: 605-348-1930       Gillette, WY Phone: 307-682-4795

Rapid City: 605-348-1930 ~ Gillette: 307-682-4795

CP&A: Making Life Simpler

Casey Peterson and Associates, LTD., South Dakota and Wyoming CPAs and financial advisors, is a full service accounting firm dedicated to satisfying the needs of individuals and businesses in the Black Hills of South Dakota and Northeastern Wyoming. In November of 2012, we celebrated our 35th year, marking a period of remarkable growth and inevitable change.

Rapid City, SD Location

We Are Industry Experts

Our expertise as a firm of South Dakota and Wyoming focused CPAs and financial advisors is designed to make the lives of our clients simpler, easier, and more successful. The services of our Gillette and Rapid City accounting firms currently meet the needs of the following industries:

  • Agriculture | Farmers, ranchers; all ranges of family operations.
  • Construction | Builders, electricians, plumbers, etc.
  • Healthcare | Large and small medical services and healthcare providers.
  • Government | From school districts to municipalities.
  • Non-Profits | All shapes and sizes of not-for-profit ventures.
  • Don't see your industry?. Click Here

At Casey Peterson and Associates, we pride ourselves on the long-lasting management and advice that continues to provide for this region's businesses and individuals. Our regionally-focused South Dakota and Wyoming CPAs serve as leaders in each individual industry of specialization.


Find out what makes us experts.
More About CP&A Our Leadership
We're Always Expanding

Our greatest strengths lie in overcoming the challenges presented by a dynamic market. As Casey Peterson and Associates has watched its clients evolve with the developing community, a similar transformation has taken place within its very own personnel and physical workspace. Time and progress has populated our workforce to nearly fifty employees and two locations. Our expansion as a company has taken our services to a second office of CPAs in Gillette, Wyoming, and spread the Casey Peterson and Associates reputation into the farthest reaches of the region.

In addition, the 2011 relocation of our Rapid City accounting firm from its original downtown office space to the first floor of the Turnac Tower is a prime indicator of our growth and accomplishments. We invite you to stop in at our new home and sample the refinement of our state-of-the-art surroundings.

Casey Peterson Opening

Time has strengthened the steadfast link between our mission as South Dakota and Wyoming CPAs and Financial Advisors and the dynamic worlds of the industries we serve.

Contact Us Today! Submit an RFP

Recent News -

Helping You Help Others

April 16, 2014

Helping You Help Others

Click Here To Apply


The Non-profit team at Casey Peterson & Associates is dedicated to helping non-profits in the Black Hills reach their financial goals.  Out of this dedication to improving the financial wellness of area not-for-profits comes a new program sponsored by CP&A. 

“Helping You Help Others” is designed to meet the financial and volunteer needs of a local Black Hills non-profit, providing one chosen organization with “a day’s worth” of help – 8 hours of tax, accounting, audit, or consulting plus 4 hours of physical labor/volunteer time provided by the entire CP&A Nonprofit Team on a project of the organization’s choice. (Valued at over $2,000!)

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Last Modified: 04-18-2014-08:08:17


We’re Busy, Yes, But We Also Have Fun!

March 31, 2014

By Casey Peterson, CPA and Kayce Gerlach, CPA – Shareholders with Casey Peterson & Associates, Ltd.

Casey: Greetings from behind a pile of files – we're back!

Kayce: We are in the middle of tax season and thought we would give you the real "scoop" on what it's like for your CPA during busy season.

Casey: Yes, we are busy this time of year, but…we also manage to have some fun as well!

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Last Modified: 04-1-2014-08:43:14


QuickBooks Training, on Demand!

January 22, 2014

For any business owner or business accounting professional, QuickBooks can be a fantastic tool for making the accounting side of a business easier.  However, in today’s busy world of work, meetings, family, and other obligations, who has time to learn how to use QuickBooks?  Or, maybe you know enough about QuickBooks to get by, but you feel there are some opportunities you may be missing?  Now, there is a solution that even the busiest professional can use to make their QuickBooks experience more beneficial.  Do you want to know the best part?  The learning can be done at times that work with your own schedule.

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Last Modified: 02-4-2014-12:48:09