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 -

Form 1040 ES Payement

1040-ES Payments Are Due Soon!

Individual Estimated Tax Payments are due on April 15th, 2015

Corporate Estimated Tax Payments are due on April 15th, 2015  

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Why small businesses should hire an accountant

According to the Small Business Association, there are 23 million small businesses in the Unites States which provide a good portion of the jobs in the country. A small business might be a local bookstore, tire shop or saddle maker, but each small business owner has one thing in common: taxes.

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Commonly overlooked tax deductions

Filing your business or personal income taxes can be a stressful experience. Realizing too late that you have missed a deduction that could have changed your return or payment can be very detrimental. There are a few commonly missed tax deductions that you should keep in mind, and if you require any assistance, enlist the help of a professional Rapid City tax accountant from Casey Peterson and Associates.

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Helping You Help Others

Calling All Black Hills Non-Profits!

The Non-Profit Team at Casey Peterson & Associates is dedicated to helping non-profit organizations in the Black Hills reach their financial goals.

Out of this commitment to improving the financial wellness of non-profits came our program called “Helping You Help Others”.
This program provides one chosen local Black Hills non-profit, with “a day’s worth” of financial assistance on a project of the organization’s choice.

One lucky organization will receive:

8 hours of tax, accounting, audit, or consulting service


4 hours of physical labor/volunteer time (provided by the entire CP&A Nonprofit Team.)

Valued at over $2,000!

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