Sales Tax & Economic Nexus for Non-Resident Sellers

Your US LLC has to collect sales tax in a state once it crosses that state's economic nexus threshold — typically $100,000 in sales into the state (some states still add a 200-transaction trigger, and California sets the bar at $500,000). The catch most non-resident founders miss is that sales tax only applies to taxable goods or digital products delivered to US customers — pure B2B services and consulting are not taxable in most states, so a large share of foreign-owned LLCs that sell services never owe sales tax at all. Sales tax is completely separate from the federal income tax and Form 5472 filings your LLC already has; one can apply without the other. This is general information, not tax advice — verify current thresholds with each state's tax authority.

What is economic nexus, and why does it apply to a foreign-owned LLC?

Economic nexus is the legal link that lets a US state require an out-of-state seller to collect its sales tax once the seller's sales into that state pass a set dollar or transaction threshold.

Before 2018, a state could only tax sellers with a physical presence there — a store, an office, an employee, or inventory. That changed when the US Supreme Court decided South Dakota v. Wayfair, Inc. in June 2018, ruling that a state may require a remote seller with no physical presence to collect sales tax based purely on economic activity in the state. South Dakota's threshold — $100,000 in sales or 200 separate transactions per year — became the template most states copied.

Here is the part that surprises overseas founders: your location is irrelevant.

Nexus follows your customers, not your passport. A Wyoming LLC owned by a founder in Bangalore or Lagos can trigger economic nexus in Texas the same way a New York company would — the only question is whether enough taxable sales landed with buyers in that state. What protects most non-resident founders is not their residency; it is the kind of thing they sell.

What are the economic nexus thresholds by state?

Most states use $100,000 in annual sales as the trigger; a handful add a 200-transaction count, and a few set higher dollar bars.

There is no single national rule — sales tax is administered state by state, and each sets its own threshold, measurement period, and whether it counts gross or only taxable sales. As of June 2026, the clear trend is states dropping the 200-transaction test and keeping a pure dollar threshold, because a low-priced seller could otherwise hit 200 orders on very little revenue.

The numbers move, so treat any chart as a snapshot.

States change thresholds and quietly remove transaction counts each year — Indiana and North Carolina dropped the 200-transaction test in 2024, and others have followed since. Always confirm against the state's own department of revenue before you register; for California, that authority is the CDTFA, and most states publish a remote-seller page of their own.

Does a non-resident seller actually have to collect sales tax?

Only if you sell something that is taxable, to buyers in a state where you have crossed the nexus threshold — and for many foreign-owned LLCs, neither condition is met.

Sales tax in the US is a tax on the retail sale of tangible personal property and certain enumerated services and digital goods. It is fundamentally a consumer tax that the seller is merely deputized to collect. If what you sell is not on a state's taxable list, you can have a million dollars of sales into that state and still owe zero sales tax there.

That distinction is the whole game for non-resident founders.

So the realistic outcome for a typical service-exporting LLC is no sales tax obligation at all — even while it still owes the federal Form 5472 + pro forma 1120 filing every year. Do not confuse the two: missing Form 5472 is a flat $25,000 penalty regardless of sales tax, while sales tax can be genuinely $0.

What if I only sell through Amazon, Etsy, or eBay?

Then the marketplace itself collects and remits the sales tax for you in nearly every state, under what are called marketplace facilitator laws.

Since Wayfair, almost every state with a sales tax has passed a marketplace facilitator law that makes the platform — not the third-party seller — responsible for calculating, collecting, and remitting tax on marketplace sales. If 100% of your US sales run through such a platform, the platform is handling the sales tax mechanics on those orders.

But facilitator coverage does not always erase your own obligations.

Several states still require you to register and file a return showing the marketplace-collected sales, and some marketplace sales count toward your own nexus threshold even when the platform remits the tax. If you sell on a marketplace and also directly through your own website, the direct sales are yours to handle once you cross nexus. Check each state's remote-seller and marketplace rules before assuming you can ignore filing entirely.

The sales-tax insight most guides skip: how you get paid changes your audit trail, not your nexus

Whether US clients pay you in USD by wire or in USDC on-chain, your sales tax position is identical — nexus is about what and where you sell, never about the rail the money arrives on.

A founder invoicing a US company $120,000 for development work owes no sales tax on that service in most states, regardless of whether the client sends a bank wire or USDC on Solana, Ethereum, or Polygon. What the payment rail does affect is the quality of your records when a state — or the IRS on your 5472 — asks you to substantiate revenue by customer and location.

This is where a clean, compliant off-ramp earns its keep.

A DIY direct-wallet path leaves you reconstructing who paid what from block explorers; StableCorp runs the off-ramp on compliant rails with a proper paper trail, so your revenue is already reconciled by customer when you need to map sales by state or prove your numbers. For clients incorporated with StableCorp, the off-ramp is 0.5% and the on-ramp is 1.5%, versus the market's roughly 2.9% headline plus about 2% hidden FX that lands near 5% effective — and Indian founders can off-ramp directly to INR at 1% on RBI purpose-code rails. See the full schedule on pricing.

How do I register and collect once I do have nexus?

You register for a sales tax permit in each state where you have crossed nexus and sell taxable items, then collect tax at the destination rate, file returns, and remit on the state's schedule.

The compliance load scales with how many states you cross into, which is why getting the threshold-tracking right early matters.

StableCorp forms your Wyoming LLC or Delaware C-Corp, gets your EIN, opens the US bank account, and runs your USD and USDC payments on compliant rails — so the revenue data behind any future sales-tax registration is clean from day one. If you are still choosing a structure, the Wyoming LLC vs Delaware C-Corp guide breaks down the trade-offs, and pricing shows the all-in cost.

This article is general information, not legal or tax advice. Sales tax thresholds and taxability rules are time-sensitive and vary by state — as of June 2026 the trend is toward sales-only thresholds, but confirm current rules with each state's tax authority or a US sales-tax professional before you register or collect.

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