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 -

Five Minute Tax Briefing May 14 2015

TIGTA Reports IRS No Longer Targeting Conservative Groups:  According to a recently released report by the Treasury Inspector General for Tax Administration (TIGTA), the IRS has made progress in the last two years in the way the Tax Exempt and Government Entities (TE/GE) handles tax-exempt applications involving political campaign intervention.

Read More


Five Minute Tax Briefing May 12 2015

IRS Apologizes to Employers Receiving Erroneous Notices:
Approximately 25,000 employers received notices indicating the wrong filing status for employment tax forms. 

Read More


IRS AUDIT FOCUS

IRS Audit Focus Expands to Gift Taxes; More Taxes Owed

(April 21, 2015 --Chicago, IL) -- Total taxes owed following trust, estate, and gift tax (TEG) audits in 2014 were greater than those collected in any of the prior five years -- excluding 2013, which was an anomaly. Total additional taxes owed on TEG returns in 2014 were nearly $2.2 billion.

Read More