Professional Bookkeeping &
Accounting Services

FOR YOUR BUSINESS OR NON-PROFIT

Contact Us

CONSULTATIONS ARE FREE!

Our Services

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Accounting & Bookkeeping

Accurate recording, organization, and management of financial transactions to ensure reliable financial statements and compliance with accounting standards.

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Payroll Services

End-to-end payroll processing ensuring employees are paid accurately and on schedule.

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Professional Preparation of IRS Form 990 (Tax Return) for Non-Profit Organizations

Expert preparation and filing of IRS Form 990 (nonprofit tax returns) to maintain compliance, transparency, and good standing with federal and state authorities.

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CFO Services

Strategic financial leadership providing insights to support informed decision-making and organizational growth.

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Work With Us

Frequently Asked Questions

  • Absolutely. Your data is fully protected using strict confidentiality practices and secure digital systems, like private digital portals for document transfers. We prioritize the safety of every client’s information and treat all financial records with the highest level of privacy and security.

  • Yes. We are happy to come directly to your business whenever you prefer. This personal, on-site service is available for clients located in and around Central and Eastern South Dakota.

  • Yes. We work with clients nationwide. All services can be provided remotely with the same level of accuracy, communication, and professionalism.

  • Yes. We specialize in serving nonprofits and small businesses, offering tailored bookkeeping, accounting, reporting, and financial support designed specifically for their unique needs.

  • We combine secure, reliable financial management with highly personalized service. Whether you prefer in-person visits (local clients) or remote support (national clients), we provide flexible, hands-on assistance that fits the way you do business.

Learn More About AccuData Bookkeeping

  • “Big thanks to AccuData Bookkeeping and especially Mark for being such a steady and helpful presence behind the scenes. Non-profit work comes with a lot of moving pieces, and it’s a huge relief to have someone who truly understands the ins and outs of it all. From payroll to project budgets, to those “wait… how do we code this?” moments - Mark is always just an email away with answers, guidance, and a good sense of humor. We’re so thankful to have AccuData in our corner!”

    Rachel Hagenbaugh - Executive Director, Mitchell Regional Habitat For Humanity

  • “Mark is a dream to work with! He frontloads a lot of time to make sure he understands your company’s finances. He is a clear communicator and keeps you posted on the projects he is working on. He always meets the deadline.”

    Vicky North - CFO, Center For Independence

  • “I highly recommend Mark from Accudata Bookkeeping for any bookkeeping needs your company may have. Mark has consistently demonstrated exceptional attention to detail, reliability, and expertise in his field. Throughout our collaboration, Mark has consistently impressed me with his ability to efficiently manage financial records, reconcile accounts, and provide accurate financial reports. His dedication to accuracy and professionalism makes him a valuable asset to any team. Not only does Mark possess excellent technical skills, but he also excels in communication and teamwork. He is always willing to go the extra mile to ensure that tasks are completed accurately and on time. In summary, Mark’s expertise, reliability, and commitment to excellence make him an invaluable asset to any organization. I am confident that he will exceed your expectations and contribute positively to your team. Sincerely, Jackie Horton First Circuit CASA.”

    Jackie Horton - Executive Director, Mitchell First Circuit CASA

  • “Mark is a consummate professional. He understands how important keeping track of expenses can make businesses run effectively. He’s a quick learner and uses that knowledge to enhance profitability. In all of the years I’ve known him in a professional capacity, he’s shown a willingness to go the extra mile to get the job done. He will go the extra mile for your business too!”

    Brian Loken - Development Director, LifeQuest

  • “I worked with Mark for many years at LifeQuest as part of the Executive Team with him overseeing the finances. Mark was great to work with and did an excellent job at managing the finances. We had many discussions about management of employees as well. I highly recommend Mark and am excited that he has started this business.”

    Bonnie Scott - Mitchell First Circuit CASA

  • “I have known Mark for many years in his role at LifeQuest and as a Seller of their lovely acreage in 2023. Mark is an outstanding businessman, highly knowledgeable, extremely hard working, does his homework for sure, and is a genuinely kind soul. I trust his bookkeeping skills 100%. A great South Dakotan!”

    Cindy Hockett-Sommervold - Real Estate Sales

  • “I have known Mark since he graduated from college. He worked for me as an assistant manager and manager for about 15 years. As a manager, he also completed assignments outside of his unit, such as audits of other operations and recruiting. Mark is dependable, thorough, and completed projects on time, every time. He worked very well with clients, customers, and employees. Some of whom were known to be difficult to work with. If I could have convinced Mark to leave SD, I would have rehired him in a heartbeat. I highly recommend Mark and expect he will be very successful in this new endeavor!”

    Doug Hubbard - Owner, Custom Desk and Hardwood Visuals

  • “Mark is hardworking and accurate, 2 things that you want in a bookkeeper!”

    Margaret Veenstra - Travel PLUS

  • “I have known Mark since 2016 when he hired me to work for him at LifeQuest. Mark was an outstanding supervisor with an amazing work ethic. He is extremely knowledgeable in his chosen field of accounting. Mark can get along with anyone and has friends from all walks of life. I know that he will treat each account with the utmost care and professionalism.”

    Sonya Johnson - Payroll Specialist

  • “Mark is honest and hard working. I believe he is a great asset to our community.”

    Duane Meyerink - Owner, Meyerink Farm Service Inc.

  • “Our firm has worked with Mark for many years. Mark is a very talented professional. His work was always of the highest quality.”

    Jay Tolsma - Senior Partner, ELO CPAs and Advisors

  • “I highly recommend Mark and I assure you his analytical skills will not disappoint you! His technology skills are amazing as well! He is very honest and extremely hard working without price gouging. Give AccuData Bookkeeping a try and you will be glad you did!”

    Connie Boughey - Former Controller and Coworker, Iverson Auto