About Us

Know your Business’s Financial Status at a Moment’s Notice

The cornerstone of every thriving business is bookkeeping. We recognize the significance of being informed about your business’s financial standing in real-time; it is crucial that this data is up-to-date, precise, easily accessible, and secure.

Exact Calculations is that extra hour in your day, the second helping hand you’ve always wished for, and the beacon of hope at the end of the tunnel.

Now, you can devote your energy to what YOU excel at – your business, its growth, and its prosperity. Our commitment lies in delivering professional, personalized, and convenient services that are meticulously organized, cost-effective, and tailored to the needs of small to medium sized businesses.

We thrive on assisting ambitious entrepreneurs like yourself! Your business becomes our business, and we take pride in providing assistance that is both personal and confidential. Reach out to us, and we will equip you with the tools you require to efficiently manage your finances.

Marisa Classen

Owner & CEO of Exact Calculations

Marisa Classen is a seasoned professional with over 30 years of extensive experience in bookkeeping, accounting, and business solutions. Residing in Texas since 1986, Marisa originally hails from California and has dedicated her career to her passion for bookkeeping, coupled with a commitment to assisting others in achieving organizational efficiency and enhancing workflow and profitability through the implementation of strategic tools.

Having successfully managed a family business for more than 20 years, Marisa played a pivotal role in its success and sustained longevity; and continues to manage the diverse family portfolios. Her expertise extends across diverse industries, including investors, real estate management, automotive, insurance, freelancers, artists, contractors, architecture, builders, and even coffee shops and inventors.

Supported by professional collaborations with numerous local CPA firms, Marisa brings a wealth of knowledge and unlimited resources to tax and accounting solutions. Her notable achievements include not only professional accomplishments but also the successful upbringing of her two sons, whom she takes pride in for their ongoing accomplishments.

Beyond her professional endeavors, Marisa engages in activities such as running, with a personal best of 13.2 miles, gardening, reading, and extensive travel, all while cherishing quality time spent with her family. Marisa’s diverse background, coupled with exceptional organizational skills, reflects her unwavering commitment to delivering honest, integral, and professional services to each client. She continues to count her blessings in her ongoing journey.