James Postma CPA

550 N 5th St, Ste 309

Rapid City, SD 57701

(605) 343-7700

Monday - Friday: 8 AM - 5 PM

Business Bookkeeping, Payroll & Tax Services

Small business is the backbone of the American economy. James Postma CPA believes strongly that the number of vibrant local companies today speaks volumes about the entrepreneurial spirit that our country is known for. Count on us for personalized business services that will help you excel.

Income Tax Preparation

Whether you already own a small business or are thinking of starting one, detailed tax preparation from James Postma CPA will save you time and money. We do business income tax preparation, including completion of the following forms:

  • Form 1040 - Returns the various entities and trust forms for individuals only
  • Form 1065 - For partnerships for limited liability companies
  • Form 1120s - For sub-chapter corporations
  • Form 1041 - Trust returns

Payroll Services

Get quarterly federal and state payroll tax preparation as well as the year-end preparation of W2 and other applicable reporting forms. We provide this service for small companies and provide peace of mind for all clients concerning any dealings with the IRS that they may have.


Your company can have unparalleled bookkeeping on a quarterly or yearly basis, whichever is right for you. We offer the benefit of our expertise and assist you in learning to do your own books.