Darcy Kooiker, CPA

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Meet Darcy

Darcy has nearly 30 years of state and local tax experience, with an emphasis on sales and use tax issues. She began her career as an auditor with the Washington Department of Revenue, which inspired her passion for helping businesses navigate the intricacies of sales and use tax rules. She was appointed by the director of the Washington Department of Revenue to its Business Advisory Council and is a member of the Washington State Society of CPAs. She has also served as an adjunct professor at Gonzaga University, teaching a masters class in state and local tax concepts.

Contact Darcy Kooiker


Q. Make a prediction; describe your vision of the future of the general business environment for your area of expertise or the industries you serve.
States are going to be even more aggressive in auditing for sales taxes going forward. Many states will experience revenue shortfalls for years and need to collect every possible cent owed. Expect states to apply sales tax more aggressively, for example, to digital goods, professional services and even advertising revenue. Since the Wayfair Supreme Court case, states can and will collect sales tax across state lines from companies doing business with customers in their state.
Q. Without naming names, tell us about your favorite client and why you enjoyed working with them.
My favorite clients are those where I’m involved at every level, whether it’s a one-on-one meeting or in a conference with attorneys and a full C-suite in attendance. Because that’s when all the experts and leaders are coming together to create an integrated strategic roadmap for success.
Q. Describe your work style.
I’m collaborative. Some of the most fun I have at work is brainstorming with a team in front of a white board and working out a solution. A talented team brings in a diversity of perspectives and ideas that you sometimes won’t find on your own. I enjoy getting innovative with my team and with clients.
Q. What’s your proudest moment?
Watching my two kids become kind, smart, driven and independent adults.
Q. If you could pass on a nugget of wisdom to aspiring accountants or consultants, what would that be?
I’ve taught at Gonzaga University and always told my students to find their passion. I myself didn’t truly enjoy accounting until I found state and sales tax. It’s such a complex profession that there truly is something for everyone — it’s all about finding where you fit in.
Q. What do you love most about your work?
Helping clients resolve complex tax issues. I enjoy the challenge of solving the puzzle that is the tax code. No two situations are exactly the same, so there’s always something new, even as you bring your experience with you.
Q. How do you share your unique knowledge of the sales and use tax space?

In a general sense, I’m very committed to getting the business community educated on the rapidly changing landscape of sales and use taxes. I regularly publish updates, speak at conferences, talk to tax reporters and work with local and national business organizations to get the word out on what businesses need to understand about sales and use tax.

With clients, sharing knowledge starts with asking questions. I often answer a question with a question, to ensure that I’m being precise. I need to know my client’s business: what do they do, how do they do it, who do they do it for? These are all critical pieces that inform what information I need to relay back to them.

Q. You sit on the Washington State Business Advisory Council and are quite active in the Washington Society of CPAs. What impact have you made on accounting rules?

In 2019, the state was looking to find more revenue for education funding. So, the legislature passed a law that would tax businesses based on how many college-educated people they employed. The philosophy was that businesses which benefited from Washington’s education system should carry the cost of funding education.

As often happens when laws are rushed, they had a list of 44 different types of business that would be subject to the new tax — many of which had descriptions that made no sense as applied to existing business tax laws.

When tax laws don’t even make sense to accounting professionals, there are going to be ramifications for collection and compliance! So, working on behalf of the Washington Society of CPAs, I and others worked with state legislators to make some recommendations to get more clarity in the language of the new tax law.

We got it done, and I even received a personal thank-you from the state’s Department of Revenue, whose leaders understood the consequences of vague and confusing tax legislation.

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Professional History


  • Ryan, LLC
  • Berntson Porter
  • Clark Nuber
  • PricewaterhouseCoopers LLP (PwC)
  • Washington Department of Revenue


  • Washington Society of CPAs (WSCPA)


  • University of Washington
  • University of Wisconsin


  • Eastside Business Roundtable, Chairperson


  • Association of Washington Business, Heavy Lifter Award
Darcy's Thought Leadership
Regulatory and Industry News Alerts from Armanino
Washington’s state legislature recently passed a 7% capital gains excise tax on individuals.

May 07, 2021
Maryland Enacts Digital Advertising Tax
The first-of-its-kind law is vague on definitions, where revenue is sourced and when it is taxable.

March 05, 2021
Regulatory and Industry News Alerts from Armanino
Review your nexus to determine how pending regulations will affect your tax liability.

February 24, 2021