
That low-grade "compliance anxiety" you feel stems from a single, critical concept: sales tax nexus. At its core, nexus is a significant connection between your business and a state that legally obligates you to register, collect, and remit sales tax there. Think of it as the tripwire that transforms a simple client relationship into a complex tax liability.
For decades, this tripwire was anchored by physical presence—something most high-value service professionals never had to worry about. That all changed in 2018.
On June 21, 2018, the U.S. Supreme Court’s decision in South Dakota v. Wayfair detonated a quiet earthquake beneath every remote business in the country. The ruling overturned a 50-year precedent that required a business to have a physical presence in a state to be subject to its sales tax laws. Overnight, the court affirmed that in our modern economy, a significant economic presence was just as substantial as a physical one.
This decision opened a Pandora's box of new obligations, creating a significant compliance challenge where none existed before. Your physical location became far less important than your economic impact.
Understanding your obligations begins with knowing the two primary ways you can establish nexus. As a modern business, you must track both.
As Matthew Wloczkowski, a CPA with BKD, noted in The Tax Adviser, the implications are significant. "This wildly new and rapidly evolving landscape presents increasing compliance challenges for sellers of business and professional services, which can now create tax nexus through nothing more than exceeding a certain volume of sales into one or more states in a given year."
His point is a critical warning: your success and revenue growth are now directly linked to your compliance burden. As you win more clients in more places, your nexus footprint expands—and ignoring it is no longer an option.
As your nexus footprint expands, the natural reaction is to feel overwhelmed. That feeling is a signal that hope is not a strategy and a scattered list of state tax rules is not a plan. To build a durable, resilient business that can grow without fear, you need a system.
This simple but powerful 3-stage framework is designed to move you from a state of compliance anxiety to one of strategic control. Think of it as your internal playbook for identifying, anticipating, and acting on your obligations.
This methodical approach transforms a daunting regulatory challenge into a series of manageable steps. It’s the difference between navigating in the dark and following a clear, well-lit path forward.
The system begins with a brutally honest self-audit, moving from abstract risk to a concrete map of your obligations. This isn't about guesswork; it's about making informed decisions based on a clear-eyed look at where your business has established connections.
A clear assessment is powerful, but it's also a snapshot in time. A single new client can shift your entire risk profile. This stage is about evolving from a one-time auditor into a proactive operator, shifting from reactive panic to a "dashboard" mindset.
This isn’t about buying expensive software. It’s about building a simple, robust internal process.
Create Your "Nexus Threshold Tracker": This is your early-warning system, and it can be as simple as a spreadsheet. The goal is to track your revenue-per-state on a rolling 12-month basis. Create a document with columns for the state, its economic nexus threshold, and your cumulative sales into that state over the last four quarters. This gives you a live view of where you stand.
Set "Leading Indicator" Alerts: Waiting until you hit $100,000 in a state is like waiting for the fire alarm to go off. A smarter approach is to set a proactive alert for yourself at 75% or 80% of the threshold. When your tracker shows you've hit $80,000 in sales to a particular state, that's your signal to schedule a call with your CPA or a State and Local Tax (SALT) professional. This buffer period turns a potential crisis into a planned, orderly business process.
The Global Professional's Challenge: This system is especially critical if you are a US citizen working abroad. It's a dangerous misconception to believe your physical location in Lisbon or Bali absolves you of these obligations. For sales tax nexus, your location is irrelevant; your client's location is everything. A $120,000 project for a client in Florida creates the same economic nexus obligation whether you perform the work from Miami or Munich.
Your 80% threshold alert is the starting gun for activating your compliance engine. Once your monitoring system flags a state, you shift from observation to action. This is a repeatable process for every state where you establish nexus.
Here’s what that engine must accomplish:
Sales tax nexus doesn't have to be a source of chronic anxiety that distracts you from your real work. True, lasting confidence comes not from memorizing rules, but from building a reliable system to manage the challenge proactively.
By shifting from a reactive worrier to a proactive CEO, you can regain control. The framework is simple: Assess your footprint, Monitor your thresholds, and build a compliance Engine. Adopting this systematic approach transforms a complex tax problem into a manageable business process. This isn't just about avoiding penalties; it's about building a resilient global enterprise with clarity, focus, and the freedom to scale without fear.
A certified financial planner specializing in the unique challenges faced by US citizens abroad. Ben's articles provide actionable advice on everything from FBAR and FATCA compliance to retirement planning for expats.

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