What Is Economic Nexus? (And Do You Owe Sales Tax in States You've Never Visited?)
What Is Economic Nexus? (And Do You Owe Sales Tax in States You've Never Visited?)
You’ve built a great product, set up your Shopify or Etsy store, and the orders are rolling in. One morning, you notice a sale from a customer in South Dakota. Then one from Illinois. Then five from California. You’re thrilled! Your brand is officially "everywhere."
But then, that nagging little voice in the back of your head (the one that sounds suspiciously like an IRS auditor) starts whispering: “Hey, do we owe sales tax in South Dakota?”
You laugh it off. “Of course not,” you tell yourself. “I’ve never even been to South Dakota. I don’t have an office there. I don’t have employees there. I don’t even have a distant cousin twice removed who once visited Mount Rushmore. I’m a small business in [Your State]; why would I owe them anything?”
Welcome to the world of Economic Nexus. It’s the "tax ghost" that’s been haunting e-commerce sellers since 2018, and if you aren't paying attention, it could be the most expensive mistake your business ever makes.
The Ghost of Wayfair: How Everything Changed
To understand economic nexus, we have to look back at a landmark moment in tax history: the South Dakota v. Wayfair, Inc. Supreme Court decision of 2018.
Before this case, the rule was simple: "Physical Nexus." If you didn't have a physical store, a warehouse, or employees in a state, that state couldn't force you to collect sales tax. You could ship products across state lines tax-free (for you, at least), and the burden was on the buyer to report it (which, let’s be honest, almost nobody did).
But states were losing billions in revenue as everyone shifted to online shopping. South Dakota challenged the status quo, and the Supreme Court agreed. They ruled that economic activity alone, not just physical presence, could create a "nexus" (a fancy word for a connection) that requires you to collect and remit sales tax.
Since then, it’s been a bit of a "Wild West" situation. Every state has scrambled to create its own set of rules, leaving small business owners staring at a map of the U.S. with a look of pure confusion.
What Triggers Economic Nexus? (The Magic Numbers)
In the wake of the Wayfair decision, states started setting "thresholds." If your sales in a specific state cross a certain line, you have "economic nexus" and must start playing by their rules.
As we head into 2026, the landscape has shifted slightly, but most states still follow a predictable (if annoying) pattern. Generally, you trigger economic nexus if you meet one of two criteria in a calendar year:
Revenue Threshold: Most commonly $100,000 in gross sales into that state.
Transaction Threshold: Most commonly 200 separate transactions into that state.
Wait, did you catch that? Even if you only sell $10 widgets, if you sell 201 of them to people in a state with a 200-transaction limit, you now have a tax obligation there. You might have only made $2,010 in revenue, but you’ve triggered the same compliance requirements as a multi-million dollar corporation.
The 2026 Snapshot: Good News for Small Sellers
The good news is that many states are realizing that the "200 transaction" rule is a massive headache for very small businesses. In 2025 and 2026, we’ve seen a trend of states dropping the transaction count entirely.
Illinois, for example, officially eliminated its 200-transaction threshold on January 1, 2026. Now, you only need to worry if you hit that $100,000 revenue mark.
California and New York have much higher bars, usually requiring $500,000 in sales before you have to worry about economic nexus.
Florida and Kansas have stuck to a flat $100,000 revenue threshold with no transaction count.
However, some states: like Arkansas and Nebraska: still hold onto that "200 transaction" trigger. This means you have to keep a very close eye on where your customers live, not just how much they’re spending.
How to Check Your Exposure (Without Losing Your Mind)
If you’re feeling a bit panicked right now, take a deep breath. You don't need to go back and get a Master's in Accounting to handle this. You just need a process.
Step 1: Run a "Sales by State" Report
Whether you use Shopify, Amazon, Etsy, or QuickBooks, you should be able to pull a report that breaks down your gross sales by shipping destination for the current and previous calendar year.
Step 2: Compare to State Thresholds
Once you have your totals, compare them to the thresholds of the states where you have the most customers. You can find up-to-date lists on the Sales Tax Institute website or check out our deep dive into the Wayfair Ghost for more historical context.
Step 3: Check "Marketplace Facilitator" Laws
If you sell exclusively through Amazon or Etsy, you might be in luck. Most states have "Marketplace Facilitator" laws that require the platform (Amazon) to collect and remit the tax for you. However: and this is a big "however": some states still require you to register for a sales tax permit if you cross the economic nexus threshold, even if you owe $0 in actual tax because Amazon paid it.
The "I'll Just Ignore It" Strategy (Warning: It Doesn't Work)
We get it. Dealing with 45 different states (plus DC) and their various tax rates is about as fun as a root canal. It’s tempting to just close your eyes and hope the state of South Carolina never notices your existence.
Here is why that is a bad idea: States are getting aggressive.
With modern data-sharing, states can easily see who is shipping into their borders. If they catch you three years from now, they won't just ask for the tax you should have collected; they’ll hit you with:
Back Taxes: Which you have to pay out of your own pocket since you didn't collect them from the customer.
Interest: Which compounds daily.
Penalties: Which can sometimes be as high as 25% or more of the tax owed.
An audit in a state you've never visited can easily wipe out an entire year’s worth of profit. It’s simply not worth the risk.
Why Small Business Owners Choose Professional Support
At Bookkeeping Made Simple, we see this every day. An entrepreneur is crushing it, growing their brand, and then they realize they’ve triggered nexus in five states and have no idea how to register, file, or calculate the rates.
This is where we step in. Our bookkeeping services are designed to take this weight off your shoulders. We don’t just "do your books"; we help you understand your financial health and identify potential tax risks before they become expensive nightmares.
We provide:
State-by-State Tracking: We monitor your sales so you know exactly when you're approaching a threshold.
Stress-Free Compliance: We help ensure your data is clean so that if you do need to register in a new state, the process is seamless.
Expert Guidance: No more googling "Do I owe tax in Maine?" at 2 AM. You can just ask us.
Conclusion: Take Control of Your Tax Footprint
Economic nexus isn't going away. In fact, as e-commerce continues to dominate, state rules are only going to get more nuanced. But "nuanced" doesn't have to mean "impossible."
By staying proactive, tracking your sales by state, and leaning on professionals who handle the heavy lifting for you, you can focus on what you actually enjoy: growing your business.
Don't wait for a "love letter" from a state tax department. Let’s get your books in order and your tax strategy solidified today.
Ready to stop worrying about the "Tax Ghost"? Contact us today for a consultation and let's make your bookkeeping simple.
