Tax Returns Done Right the First Time

Building Financial Success Together

With Mendyke CPA, experience a partnership that brings your financial goals to life, anchored by our commitment to your success and peace of mind.

Ramsey Certified

Dave Ramsey Radio Trusted

Mendyke CPA | Appleton, WI

About Donna

I believe in proactive tax planning and  focusing on legally minimizing liabilities. My practice is grounded in the values of professionalism, responsiveness, and delivering quality service—making sure each client is listened to, supported, and confident in their financials.

For me, it's all about guiding each client towards financial health and empowerment.

I'm Donna Mendyke, a graduate of St. Norbert College and UW-Madison, where I began my journey that led to the founding of my CPA firm. My mission is rooted in imparting knowledge, earning trust, and leading the way in financial strategy.

CPA (Certified Public Accountant)

CMA (Certified Management Accountant)

CGMA (Chartered Global Management Accountant)

Advanced Certified QuickBooks ProAdvisor

Certified in State & Local Taxation from UW-Milwaukee

MACC (Masters of Accounting) from UW-Madison in Taxation and Management Information Systems

Our Vision

At Mendyke CPA, we see a future where every client—no matter who you are—gets the top-notch tax help you deserve. Grounded in our core values of professionalism, responsiveness, and quality, we're all about giving our clients the personal attention, quick, reliable advice, and top-quality service that makes a real difference. We're not just about the numbers; we're about lifting up every client so you can make smart money moves. That's our vision: to guide you to financial success and be right there with you, every step of the way.

Mendyke CPA | Appleton, WI

Our Process

Flawless Financials

We keep your books pristine and your mind at ease. We ensure accurate records, giving you the clarity to grow your business stress-free.

Maximize Opportunities

We'll help you maximize your business's potential and achieve your goals.

Simplify Year End

Simplify your year-end financials with our expert tax planning. We ensure accurate, efficient, and stress-free tax preparation and filing.

Audit Prevention

Minimize your risk of an audit with our proactive prevention services. Stay compliant and focus on growing your business.

Mendyke CPA | Appleton, WI

Get More Than Just An Accountant

Traditional accountants often miss opportunities to save on taxes and improve business operations. Mendyke CPA is different. We offer outsourced accounting services that provide rigorous analysis, guidance, and actionable tax reduction strategies. Elevate your business with an accounting solution that delivers measurable results.