Tax-Efficient Wealth Management for Thoughtful Investors
The taxes you pay on investments matter as much as the returns you earn. We work with investors to identify tax optimization opportunities across K1s, brokerage portfolios, and complex holdings. Strategic planning throughout the year means more wealth in your pocket.
Your Alaska CPA Partner for Investment Tax Strategy
Diehl CPA LLC is an Alaska-based CPA firm focused on tax preparation and planning for investors and closely held businesses. We work especially well with clients who have complex, investment-heavy returns and want clear, thoughtful guidance instead of rushed filings.
Our mission is to bring clarity, strategy, and calm to your tax life, so every return supports the bigger financial goals you’re working toward. You’re in good hands with Diehl CPA.
Mark Diehl, CPA, CFE
Founder and President
Mark Diehl, founder and president of Diehl CPA, is a Certified Public Accountant (CPA) and Certified Fraud Examiner (CFE) with both a Bachelor of Science and a Master of Science degree in Accounting from Western Governors University. For years, Mark has worked as the former Minnesota state tax auditor in Alaska. He started his accounting firm to help people protect their hard earned money, and has been in business since 2019.
Find Your Path to Wealth With Tailored CPA Solutions
Smart tax strategy isn't a one-time event—it's an ongoing conversation. Here's how we support your financial goals through comprehensive CPA services tailored to investor needs.
Investment Tax Planning
We dive deep into your portfolio to uncover tax optimization opportunities. Whether you're managing diversified holdings, alternative investments, or complex income sources, we develop strategies tailored to your situation. We implement proactive planning that reduces your tax burden before the year ends.
Tax Return Preparation
We provide accurate, comprehensive tax return preparation built for investor complexity. We handle the nuance of multi-account portfolios, partnership income, and multi-state filings so your returns are filed correctly and positioned for future tax savings.
Retirement Tax Strategies
We help Alaska investors navigate Roth conversions, withdrawal sequencing, and estate coordination, so the wealth you've built works harder in retirement than the taxes against it.
Top-Notch Communication
We believe you should always know where you stand and what comes next. We explain complex tax concepts in plain language, keep you updated throughout the year, and are accessible when questions arise. With Diehl CPA, you're informed, involved, and confident in every decision.
Specialized Investor Expertise
Tax planning for investors requires more than standard CPA knowledge. We understand portfolio complexity, investment structures, and the unique tax implications of diversified holdings. Our expertise means we see opportunities others miss and help you avoid costly mistakes. You're working with a team that truly understands your financial world.
Proactive, Not Reactive
We don't wait until April to think about your taxes. We monitor your situation throughout the year, identify optimization opportunities as they emerge, and adjust strategies when your portfolio changes. This proactive approach means fewer surprises and consistently better tax outcomes for our clients.
A Steady Partner for Your Investment Journey
Sophisticated portfolios create sophisticated tax situations. That complexity shouldn’t create stress. We handle the details—the compliance, the optimization, the year-round monitoring—so you have peace of mind knowing your taxes are handled by someone who truly understands your financial picture. You can focus on growing your wealth while we focus on protecting it.
If you’ve received a threatening letter from the IRS demanding more of your hard-earned money, you are not alone. However, most people don’t deal with the situation properly, and thus make it that much harder for themselves. Watch this video to learn what to do to get the best results.
If you’ve received a threatening letter from the IRS demanding more of your hard-earned money, you are not alone. However, most people don’t deal with the situation properly, and thus make it that much harder for themselves. Watch this video to learn what to do to get the best results.
They chose Diehl CPA
Go-getter and genuine expert are a few of the phrases that come to mind when I think about Mark. He is a detail-oriented, target-oriented, ambitious, and strong worker. His knowledge is vast and extensive. He always takes care of the job.
David Lebbie
Mark Diehl has been a fantastic accountant. Not only have I rarely ever been sent to his voice mail, as he answers which is incredible for immediate information, but he has saved me $$$ time and time again. Most recently, he asked me about a business transaction that I had NO idea existed. RECOMMEND him HIGHLY!!!
Darren De Araujo
Mark is very friendly, helpful, and knowledgable. He was easy to talk with and did a great job. I would highly recommend him to anyone looking for CPA services!
Juliet S.
Your Trusted Guide Through Tax Complexity
When your portfolio becomes complex, your tax strategy needs to match that sophistication. We don't offer generic solutions. We dig into your specific situation, identify opportunities unique to your circumstances, and build a strategy designed specifically for you. Ready to see what's possible with specialized expertise? Let's talk about your portfolio.
