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We admire your work. You are helping to transform the wine industry and our view of accountants.

Linda Reiff, Executive Director, Napa Valley Vintners

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Team

Known as 'The Nordic Decoder' for his heritage and talent for simplifying complex systems, Daigen Afdahl brings technical expertise and personal insight to the BDCo team as Tax Manager. With roots on a Wisconsin dairy farm and a passion for uncovering the stories behind numbers, he specializes in helping businesses and individuals navigate tax code sections while leveraging data to support informed decision-making. Daigen earned his Bachelor of Science in Business Administration and Master of Professional Accountancy from Montana State University in Bozeman, where he honed his problem-solving skills and practical expertise. He gained hands-on experience as a volunteer preparing tax returns for residents of remote Alaskan villages, followed by advancing roles in public accounting, where he developed extensive skills in tax return preparation, staff management, and strategic financial planning. Beyond the office, Daigen’s creativity extends to the kitchen, where he crafts gluten-free and dairy-free meals inspired by a recent lifestyle change. A lifelong learner and problem solver, he thrives on helping clients optimize their tax strategies, tackle operational challenges, and achieve their business goals in complex industries.

Daigen AfdahlNordic Decoder

Craig Underhill is the firm's CEO. He has been a CPA for over 37 years and has been with BDCo since 1995. Leveraging his vast accounting and management expertise, he's adept at steering wine and hospitality entities towards strategic success. His education in strategic management, productivity, and human behavior empowers individuals across all levels—from top executives to hourly staff—to reach their peak. A master at inciting introspective questions, Craig enables individuals to unlock their potential and bolster performance. He is the board chair for Junior Achievement in Napa County and has led JA's expansion from 250 participants to over 4,000 annually. He holds a business administration degree from California State University, Chico and is certified in Strategic Performance Management. He is an active volunteer and trained handler for Aaron the Comfort Dog, a Napa celebrity. You can read Craig's blog posts here and hear him describe his vision for the firm here. Craig is a CPA licensed by the California Board of Accountancy.

Craig UnderhillEmperor of Enlightenment, CEO

Randy Gnagy has been a CPA for more than 35 years, having first joined BDCo in 2000. He is the firm's senior tax specialist, and has a great deal of experience in interstate taxation and tax preparation for nonprofit organizations. Over the years he has been active in Junior Achievement, the Arts Council of Napa Valley, the Napa Valley Shakespeare Festival, and has served on the board of Napa Emergency Women's Services and UpValley Family Centers of Napa County. He has also done volunteer work at local schools. An avid cyclist, he holds a BA in history from California State University, Fresno. Randy is a CPA licensed by the California Board of Accountancy.

Randy GnagyPain Reliever

Geni Whitehouse is a consulting team member with BDCo. She is the author of How to Make a Boring Subject Interesting: 52 ways even a nerd can be heard, which is available on Amazon.com. Geni has been named one of the 25 most powerful women in accounting by CPA Practice Advisor, one of the Top 100 Influencers by Accounting Today magazine, and one of the Top 25 Thoughtleaders in Accounting. Her primary area of focus is expanding BDCo's strategic management services. Geni is an instructor at the WISE Academy,where she teaches accounting concepts to winery staff and is a former board member of the Napa/Sonoma Chapter of Women for WineSense where she served as Education Director. She was a member of TEDxNapaValley.org and spoke at their event in September of 2011. You can read Geni's blog posts here. Geni is a CPA licensed by the Georgia State Board of Accountancy.

Geni WhitehouseCountess of Communication

Jake Thomas has a unique background which combines advanced studies in Physics and WSET Level 3 certifications in Wine & Spirits. He has taught physics classes at Stanford and created more than 500 custom cocktails at high end resorts in the Bay Area. Whether he finds himself behind a desk, in front of a classroom, or working the bar, Jake is motivated by the impact he is able to have on others. Jake is a life-long learner who looks for new ways to stretch beyond his comfort zone. We are grateful to have access to his curiosity, knowledge, and mixology magic as a member of the firm’s administrative team. When he has time outside of work and is not busy researching Quantum Field Theory, Quantum Electrodynamics, Chaos Theory or mixing whiskey cocktails, Jake is fond of trips to Canada for back country snowboarding.

Jake ThomasIrrational Number Nerd

Chandra Englehart is a resident of Illinois and holds a degree from the University of Evansville (UE) and a Masters in Business Administration from the University of Southern Indiana. She has prior experience in both audit and tax and has held accounting roles in both private equity funds and banks. At one point, she even worked on a cemetery audit and was engaged in counting headstones. She is excited about applying her spirit-counting expertise in Wine Country and to helping people make sense of the numbers. She is an avid baseball fan and competitor, and as a former player on the NCAA Division 1 UE softball team, still holds the home run record. Her accolades don’t stop there as she was recognized as a 4 time all Academic player and at one point even held the record for getting “Hit by Pitch”. A mother of two young children, Chandra is inspired by her Mom, and is constantly looking for new ways to grow and learn. In 2025, she became a Certified Management Accountant(CMA) through the Institute of Management Accountants. Chandra is a CPA licensed by the Illinois Board of Examiners, and holds a CMA (Certified Management Accountant) license from the Institute of Management Accountants.

Chandra EnglehartPinch Hitter

Mattie Eagle is a graduate of Grinnell College in Grinnell, Iowa where she majored in History and Studio Art. After graduation, travel, and several applications of her entrepreneurial talents, she went back to school at Western New Mexico University to gain the accounting credits that qualified her to become a CPA. In 2022, she added a Masters of Taxation to her credentials. She was raised in Minnesota and now lives in Silver City, New Mexico with her husband and two children. She is a full-time member of the BDCo tax team. She particularly enjoys researching tax laws as they change in search of new opportunities to help our customers. Mattie loves supporting her customers as they take calculated risks, pursue the expansion of their passions, and become owners of their financial futures. An avid cyclist, Mattie is inspired by those who lead a “self-directed life” and enjoys applying her considerable talents to local sports, charitable organizations, and entrepreneurs who are seeking to build successful businesses. Mattie is a CPA licensed both by the New Mexico Board of Accountancy and the California Board of Accountancy.

Mattie EagleSilver Spinner

Heather Sprauve is a native of Deer Park, California. She attended Pacific Union College (PUC) in Angwin, then transferred to their sister college, Atlantic Union College in South Lancaster, Massachusetts, before returning to Angwin to complete her degree. She started out as an art major but after taking her first business class, discovered an aptitude for accounting and made that her major. Heather moved to the Virgin Islands where she married and spent 18 years working for an accounting firm. She worked for BDCo part-time for a few years and then following the devastating impact of hurricanes Irma and Maria, returned to California. While she enjoys being back in California, Heather misses her daily view of the Caribbean Ocean from almost any spot on the 31 square mile island of St. Thomas. Her interests include hiking, traveling and exploring new places.

Heather SprauveGlobal Gallivanter

*Definition is here. When asked about her favorite part of her last job, Alex Castro was quick to respond "the view". An avid appreciator of both the beauties of nature and the essence of people, one of her favorite non-work activities is to head to the beach to watch the sunset. Alex is a Napa native with experience in the wine and sports training industries. Arriving for her first day of work in the middle of the Covid-19 stay at home order, Alex met the team online. Her upbeat energy and positive, infectious attitude are a great addition to our customer service team - both in person and online.

Alexandria CastroPhi-localist*

From managing restaurants to mastering tax strategies, Adam Kern has charted a unique path to becoming an accounting professional. Armed with a Bachelor of Science in Business Management from the University of Nevada-Reno and Enrolled Agent certification, Adam specializes in unraveling the complexities of tax law. After working more than 5 years in a local firm where Adam annually assisted individuals, trusts, and businesses with their taxes, he transitioned into the role of mentor to his team members. Adam takes pride in training the next generation of preparers, blending technical expertise with practical guidance. Outside the office, Adam applies his love for adventure in hiking and exploring the scenic trails of Tahoe. Nicknamed the "Tax Trekker," Adam thrives on solving intricate problems and leading clients confidently through their financial journeys.

Adam KernTax Trekker

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Napa, CA 94559

Phone  :  707-963-4466
FAX  :  707-266-1673
email  :  info@bdcocpa.com

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