John Warner - Dark Horse CPAs

John Warner knows cannabis tax and accounting from every angle—including the one most business owners lose sleep over: 280E compliance. As a Principal at Dark Horse CPAs, John partners with dispensaries, cultivators, manufacturers, and vertically integrated operators to turn one of the most complex tax codes in the country into a clear, actionable strategy.

Before cannabis, John cut his teeth at the IRS (yes, he’s heard all the jokes) and then spent seven years at a national CPA firm building a real estate tax practice for large international investment groups. That mix of inside knowledge and high-level advisory work gives him a unique edge when it comes to structuring cannabis businesses for long-term growth and compliance.

Beyond tax strategy, John helps owners get control of their reporting, budgeting, and cash flow so they can run smarter, more profitable operations. His approach is direct, practical, and always focused on one thing: helping cannabis entrepreneurs maximize their bottom line while staying ahead of the IRS.

Dark Horse CPAs is a national accounting firm built to serve cannabis businesses of all sizes. From single-location dispensaries to fully integrated, multi-state operators, our Cannabis Division delivers tax and CFO advisory that’s designed for the unique challenges of this industry.

We handle the details that matter—280E tax strategy, bookkeeping compliance, outsourced accounting, and fractional CFO services—so you can focus on running and scaling your operation. Whether you’re in retail, cultivation, manufacturing, or cannabis e-commerce, our CPAs work with you one-on-one to minimize tax exposure, streamline financial systems, and provide clear, actionable insights all year long.

With Dark Horse, you get more than a tax return—you get a strategic partner to help maximize your bottom line in one of the most complex industries in the country.