Thoughtful Advice, Delivered with Integrity
We provide advice with a strict emphasis on compliance, accuracy, and durability. Our planning is based on applying U.S. tax law as written, not stretching it beyond its intent. We do not engage in asset concealment or strategies that depend on incomplete reporting.
We help clients implement structures that are defensible, transparent, and designed to support long-term operations without creating avoidable exposure.
I’m the founder of Borderista and a U.S. CPA with 15+ years of accounting & tax experience. Originally starting as a backpacker, I’ve spent my career traveling around the world and helping clients navigate U.S. tax and international structuring decisions clearly & correctly.
Mark Dissen, CPA
Independent & Objective
Advice is not tied to products, commissions, or preset strategies. Every recommendation is made solely based on what actually fits your situation.
Fully Transparent
Clear explanations, clear tradeoffs, and no hidden structures. Everything is designed to stand up to be reported to tax authorities and be defensible on in the case of an audit.
Built for Clarity
We walk you through the why behind each decision so you understand how your structure works, not just that it exists. It’s important that you actually understand your structure
A Personal Experience
You work directly with an experienced accountant, and we do not use a cookie cutter template for every tax & structuring client
We Always Put Your Interests First
We operate as true advisors, not product sellers or automated services. Every recommendation is made independently, explained clearly, and designed to hold up long term. You work directly with an experienced CPA who understands how U.S. tax rules actually apply to internationally mobile businesses and individuals.
What we don’t do matters as much as what we do.
We don’t sell opaque structures, push products, or automate decisions that require judgment. Every recommendation is legal, documented, and explained so you understand exactly why it exists and how it works.
Cross-Border Focus
Specialized in U.S. tax planning for international lives and businesses, including expats, remote founders, and globally structured companies.
- 2025
