If you sell on Shopify from outside the US, you are personally responsible for collecting and remitting US sales tax — Shopify does not do it for you, your home country’s tax treaty does not exempt you, and the IRS having no record of you means nothing to a state Department of Revenue. That is the uncomfortable answer that most of the SaaS-vendor blogs bury under twelve paragraphs of generic background. This guide is written for the founder in London, Sydney, Auckland, Toronto, Cape Town, Berlin, or Singapore who is selling DTC into the US through Shopify and has just discovered that the rules are not what they thought.
We’ll walk through exactly when you owe, how to register without an SSN or US bank account, how to actually remit money from a foreign account, and what to do if you’ve been selling for three years and never collected a cent. And at the end, we’ll be direct about the realistic option for most foreign sellers: outsource the entire mess to a service that handles it for you in one payment.
Do Non-US Shopify Sellers Owe US Sales Tax? The Short Answer
Yes. Your country of residence is irrelevant. Sales tax is a destination-based, transactional tax, and US states care only about where the customer is — not where you are.
Yes — your country of residence does not exempt you
Sales tax in the US is a state-level tax (and in some places, a local tax on top), administered by 46 separate state revenue departments plus the District of Columbia. There is no federal sales tax and no federal exemption you can apply to as a foreign seller. Income tax treaties between the US and the UK, Canada, Australia, New Zealand, South Africa, Germany, and so on cover income tax — they have no application whatsoever to state-level sales tax.
The constitutional foundation for taxing remote sellers comes from South Dakota v. Wayfair, Inc., 138 S. Ct. 2080 (2018), in which the US Supreme Court overruled the prior physical-presence requirement and allowed states to require remote sellers to collect sales tax based on economic activity alone. Nothing in the Wayfair decision limits its reach to US-domiciled sellers. A seller in Manchester or Melbourne is in the same legal position as a seller in Minneapolis, once their sales into a particular state cross that state’s economic-nexus threshold.
Why Shopify sellers are different from Amazon/Etsy sellers
This is the single most expensive misunderstanding we see. Foreign sellers often assume Shopify works like Amazon — that the platform itself collects and remits sales tax on their behalf. It does not.
Amazon, Etsy, Walmart, and eBay are marketplace facilitators under every state’s marketplace-facilitator statute. They are legally required to collect and remit sales tax on third-party sales made through their platforms. When you sell on Amazon, Amazon takes care of state sales tax for you in nearly every situation.
Shopify is fundamentally different. Shopify is an e-commerce platform — you are running your own store on Shopify’s infrastructure. Shopify is not the seller of record, is not classified as a marketplace facilitator under any state’s law, and has no obligation to collect sales tax on your behalf. Shopify provides automatic tax calculation tools, but calculation is not collection, and calculation is not remittance, and calculation is certainly not registration. You — the seller — are 100% on the hook.
The two triggers: physical nexus and economic nexus
You owe sales tax in a state when you have nexus there. There are two principal flavours:
- Physical nexus — you have inventory, employees, contractors, or property physically present in the state. For Shopify sellers using a US-based 3PL, this is usually the bigger trigger.
- Economic nexus — your sales into the state exceed a dollar threshold (and in some states, a transaction-count threshold) over a measurement period.
The moment you cross either trigger in a given state, you must register, collect, file, and remit. It does not matter that you’ve never set foot in the US.
Economic Nexus Thresholds for 2026 (All 46 States)
The post-Wayfair standard started at “$100,000 OR 200 transactions” but has fragmented significantly. By 2026, the trend is toward higher dollar thresholds and the elimination of transaction-count tests entirely.
The $100K / 200-transaction standard and its erosion
When Wayfair came down in 2018, South Dakota’s threshold — South Dakota’s economic nexus threshold is $100,000 in gross sales into the state; the 200-transaction prong was eliminated effective July 1, 2023 (see SD DOR 2023 legislative updates). — became the template that most states copied. That template is now breaking apart. States have realised the 200-transaction prong was punitive for low-priced goods (a $5 sticker shop hitting 200 sales = nexus on $1,000 of revenue), and many have either raised the dollar test, dropped the transaction prong, or both.
States that dropped the transaction count
A growing list of states have repealed the transaction-count threshold and now apply a dollar-only test. Notably, South Dakota recently narrowed its economic nexus standard by repealing the transaction-count prong, leaving a single gross-sales test, though the precise effective date and statutory vehicle should be confirmed against current DOR guidance. If your South Dakota nexus position depends on the transaction prong, contact us for a current review.. Other states that have moved to dollar-only tests include California, Colorado, Iowa, Maine, Massachusetts, New Jersey, North Dakota, Washington, and Wisconsin. The exact mechanics and effective dates vary, and the list keeps changing — if you’re trying to map your exposure precisely across all 46 states, contact us for a current state-by-state review rather than relying on a static table.
States with $250K+ thresholds
Several states adopted higher dollar thresholds from the start or have raised them since. Alabama, Mississippi, and Tennessee operate at the $250,000 level. Texas and California sit at $500,000. New York is at $500,000 and 100 transactions (a unique conjunctive test).
The point for a foreign Shopify seller is not to memorise every threshold — it’s to understand that you can cross nexus in a small state long before you’d notice it. North Dakota’s $100,000 threshold doesn’t sound far away when you have one viral product hitting Reddit.
How Shopify Analytics tracks nexus exposure
Shopify’s reporting will give you sales by state. That’s the input you need for nexus monitoring, but Shopify will not automatically tell you “you’ve crossed nexus in Pennsylvania this month.” Shopify Tax (the paid add-on) provides nexus alerts, but the alerts are based on Shopify’s interpretation of state thresholds, which lags real-world updates. Treat Shopify’s nexus alerts as a starting point, never as legal compliance.
A note on the measurement basis: states differ on whether the threshold is measured against gross sales (everything you sold), retail sales (excluding sales for resale), or taxable sales (excluding exempt items). South Dakota uses gross. California uses cumulative gross receipts. Texas uses total Texas revenue. The differences matter when your numbers are close to a threshold, and the official guidance for each state controls.
Physical Nexus Traps for Foreign Shopify Sellers
If you use a US-based 3PL — ShipBob, ShipMonk, Deliverr, ShipHero, or any local fulfilment partner — you have physical nexus in every state where your inventory sits. The economic-nexus dollar thresholds become irrelevant; you owe from sale number one.
Using a US-based 3PL (ShipBob, ShipMonk, Deliverr)
This is the silent killer for foreign Shopify sellers. To meet US delivery expectations (2-3 days, free shipping), most overseas brands send inventory to a US 3PL. The standard 3PL playbook is to split inventory across multiple warehouses — east coast, central, west coast — to minimise shipping zones.
Each warehouse location is potential physical nexus. A ShipBob distribution across Pennsylvania, Texas, Illinois, and California means you have inventory sitting in four states. Most state revenue departments treat third-party-warehoused inventory exactly the same as inventory in your own warehouse: it is your tangible personal property, located in their state, generating sales into that state. That’s physical nexus.
Storing inventory in a US warehouse — even briefly
Trade-show stock, sample inventory, returns processing, a temporary holiday-season pop-up — any of these can create physical nexus. The dollar threshold protections in states like California ($500,000) or Texas ($500,000) are only available to remote sellers without physical presence. Once you have physical presence, those high thresholds vanish; the threshold is effectively zero. You owe on dollar one.
South Dakota is explicit on this: “Any business with a physical presence in South Dakota is required to be licensed for sales tax collection. The minimum threshold does not apply to any business with a physical presence in South Dakota.”
Most states take the same position.
Hiring US contractors or representatives
If you have a US-based contractor performing work that helps establish or maintain your market — a freelance customer-service agent, an influencer with a long-term contractual relationship, a US-resident developer working on your store — there’s a nexus question to consider. The fact patterns vary wildly and the rules turn on the specific role and contract. If you have any US contractor relationship, contact us for a review before assuming you’re safe.
Attending US trade shows
Selling at a US trade show, even for three days, generally creates nexus in that state for that period — and in some states, ongoing nexus afterwards. If you fly into Las Vegas for CES and take orders, Nevada wants to know. The duration thresholds vary and exemptions exist for purely promotional (no-sales) attendance, but the conservative practice is: assume any in-state sales activity creates nexus and treat the state accordingly.
How to Register for Sales Tax Without a US EIN, SSN, or US Bank Account
You can register in most states without an SSN or a US bank account. You will, however, almost certainly need an EIN (Employer Identification Number), and getting one as a foreign entity is its own process.
Getting an EIN as a foreign entity (Form SS-4 by fax)
A foreign entity (UK Ltd, Australian Pty Ltd, Canadian corp, etc.) can apply for a US EIN without any of the principals having an SSN or ITIN. The mechanism is IRS Form SS-4. The online EIN application is restricted to applicants with a US tax ID, so foreign applicants must file by fax or mail.
Line-by-line on Form SS-4, the gotchas for foreign applicants:
– Line 7a/7b (Responsible Party): The name and tax identification of the responsible party. For a foreign applicant with no SSN/ITIN, write “Foreign” in the SSN field.
– Line 8a–10: Check the appropriate entity type and reason. “Started new business” or “Banking purpose” or “Compliance with IRS withholding regulations” are common selections.
– Signature: Must be signed by an officer/owner with authority to bind the entity.
The IRS has a dedicated international EIN fax line and processing window. Processing times can range from days to several weeks depending on volume; we usually see 2–6 weeks for fax submissions. For a more detailed walkthrough, see how to get an EIN as a foreign entity.
States that accept ITIN-only or passport-only registration
Once you have an EIN, most states’ sales-tax registration portals will accept the EIN as the primary tax identifier. A handful of state portals are clunky for foreign applicants — they may demand a US street address, a US phone number with valid area code, or a US driver’s licence number for the responsible officer. Workarounds exist (registered-agent address, US virtual phone number, passport substitution) but they vary by state and by the moment Mercury IT updated the portal.
States that require a US bank account for ACH remittance
This is the practical wall most foreign sellers hit. Once you’re registered and you’ve made sales, you have to send the state money. Some states accept:
– ACH debit (state pulls from your bank account) — requires a US bank account
– ACH credit (you push from your bank to theirs) — requires a US bank that supports it
– Credit card — most states accept, usually with a 2–3% convenience fee
– Paper check from any US-drawn account
– International wire — accepted by a minority of states, often with extra fees and delays
For a UK Ltd. with a Wise account or a Mercury account designed for foreign founders, US ACH is usually possible. For sellers with only a home-country bank account, credit card remittance becomes the workhorse — fee-laden but functional.
Workarounds: payment processors, third-party remittance
The realistic answer for most foreign founders is to engage a US-based service that handles registration and remittance. The service registers in your name, files the returns, and remits funds you’ve transferred (we hold remittance funds in trust and pay each DOR on the right schedule). You never need to wrestle with the state portals or figure out which DOR accepts international wire. For more on registering without a US tax ID, see sales tax registration without an SSN.
Configuring Shopify Tax Settings as a Non-US Seller
Shopify will calculate sales tax for you, but Shopify does not register you, file for you, or remit on your behalf. And — critically — turning on tax collection before you’re registered in a state is illegal.
Turning on tax collection per state after registration
In Shopify Admin, sales tax collection is configured under Settings → Taxes and Duties → United States. You add each state where you have a registration and enter your sales-tax permit number. Shopify then calculates tax on US orders shipped to that state at the appropriate rate (state + local).
The order of operations matters: register first, then turn on Shopify tax collection. Not the other way round.
Why you must NOT collect tax before registering
Several states explicitly classify the collection of sales tax without a permit as either tax fraud, theft of state funds, or an unfair-trade-practice violation. The state’s logic: by collecting tax from your customer, you are representing yourself as authorised by the state to do so. If you have no permit, you’ve collected funds that don’t legally belong to you. Penalties can include forfeiture of the collected amounts plus civil and criminal exposure.
The fix is sequential: identify the states where you have nexus, register, then configure Shopify.
Origin-based vs. destination-based sourcing
Most states use destination-based sourcing — the tax rate is based on where the customer receives the goods. A few states use origin-based sourcing for in-state sellers (rate based on the seller’s location). For a foreign seller with no in-state physical location, destination sourcing applies in essentially every state. Shopify’s automatic tax handles this correctly when configured.
Shipping taxability — it varies by state
Whether shipping/handling charges are themselves subject to sales tax varies. As a rough map:
– States where shipping is generally taxable (when the underlying product is taxable): Texas, New York, Pennsylvania, and many others.
– States where separately-stated shipping is generally non-taxable: California (with conditions), Massachusetts, and others.
– Mixed-rule states where it depends on whether the carrier is a common carrier, who arranges shipping, whether the charge is separately stated, etc.
In South Dakota, for example, delivery charges are included in gross receipts and subject to the same sales/use tax rate as the underlying product or service; if the product or service is non-taxable, the delivery charge is non-taxable.
Shopify’s tax engine handles most of this automatically when “charge tax on shipping” is enabled with proper configuration, but there are edge cases (mixed-taxable carts, marketplace orders) where it under-collects. Audit a sample of your orders manually after first turning it on.
Product-specific exemptions exist too: clothing exemptions in Pennsylvania, Minnesota, and New Jersey (and partial exemption in New York for items under $110); food and grocery exemptions; digital-goods rules. Each exemption has to be coded into your Shopify products via the right tax-exempt category. If you sell apparel into Pennsylvania and you’re charging tax on it, you’re over-collecting and your customers will eventually notice.
Filing and Remitting Sales Tax from Outside the US
Once you’re registered, you must file a return on the state’s assigned schedule — even in months with zero sales. Failure to file zero returns racks up penalties just as fast as failure to file at all.
Filing frequencies (monthly, quarterly, annual)
States assign your filing frequency based on your liability volume. The general pattern (varies by state):
– Monthly — high-volume sellers (typically >$1,000–$2,000/month in tax)
– Quarterly — mid-volume
– Annual — small sellers or low-tax states
You don’t pick — the state assigns the frequency at registration and may adjust it after a year of filing data. If you’re a foreign seller with $50k/year of US sales spread across 15 states, expect to be on quarterly or annual in most of them.
International payment options by state
The state-by-state breakdown of international payment acceptance is messy and changes frequently as DORs upgrade their portals. The general categories:
– ACH (US bank required): accepted by all states; required by some
– Credit card: accepted by most states, usually with a convenience fee
– International wire: accepted by some states; often requires advance arrangement
– Paper check: accepted by virtually all states from a US-drawn check
A Wise Business account or Mercury account configured with US ACH details solves most of this for foreign sellers. If you’re remitting from a non-US bank with no US ACH facility, credit card or full-service outsourcing is realistically your only option.
Zero-return requirements
This is where DIY foreign sellers get bitten. After registering in, say, Iowa, you must file an Iowa return every month/quarter for as long as you hold the permit — even if you sold $0 into Iowa that period. South Dakota is explicit: “A business must file a tax return each reporting period even if they did not conduct business or receive income.”
Miss enough zero returns and the state will assess late-filing penalties for each missed period, even though no tax was owed.
Late filing penalties and interest
Penalty structures vary, but most states impose a late-filing penalty plus a late-payment penalty plus interest. As a representative example, South Dakota assesses a 10% late-filing penalty (minimum $10) when a return is not received within 30 days following the month it’s due, plus 1% per month interest (minimum $5/month) on past-due tax. Other states range from 5% to 25% in late penalties, with interest typically in the 0.5%–1.5%/month range.
The compounding effect is real: a foreign seller with permits in 10 states who lets six months of zero returns pile up can wake up to $1,000–$3,000 in late-filing penalties on $0 of tax owed.
What Happens If You’ve Been Selling for Years Without Registering
If you’ve been selling on Shopify into US customers for two, three, five years without registering anywhere, you have back-tax exposure. You probably don’t have catastrophic exposure — but ignoring it makes it worse, not better.
Lookback periods (3-7 years depending on state)
When a state discovers an unregistered seller (audit, nexus questionnaire, marketplace data-share, or referral), they assess back tax for whatever they can reach. For a registered seller who just filed late, the assessment lookback is usually 3–4 years. For a seller who never registered, many states take the position that the statute of limitations never started running — they can theoretically assess from the day economic nexus was first triggered.
In practice, states often cap their assessments at 6–8 years even against unregistered sellers, but the legal exposure is open-ended.
Voluntary Disclosure Agreements (VDAs)
A VDA is a state-administered programme that allows an unregistered seller to come forward, register, and resolve back tax with the following typical benefits:
– Capped lookback — usually 3 or 4 years (instead of unlimited)
– Penalty waiver — late-filing and late-payment penalties forgiven
– Interest — generally still owed
– Anonymity during negotiation — the seller’s identity is shielded by their representative until terms are agreed
VDAs are negotiated by a tax professional, typically through the state DOR’s VDA programme or via the Multistate Tax Commission’s Multistate Voluntary Disclosure Program (MVDP) for multiple states at once. A foreign seller with five years of US sales across 15 states is the textbook VDA candidate.
For a fuller treatment, see our Voluntary Disclosure Agreement guide.
Penalty abatement opportunities
Outside the formal VDA framework, most states offer some form of penalty abatement for first-time errors or reasonable cause. The mechanics vary state by state. If the magnitude isn’t large enough to justify a formal VDA, a penalty-abatement request after registration and back-filing may be sufficient.
When to use VDAs vs. standard registration
Rule of thumb:
– Use a VDA when you have meaningful unreported tax in a state and your unregistered period exceeds 12–18 months. The penalty waiver and capped lookback usually outweigh the VDA professional fees.
– Use standard back-registration + late returns when the period is short, the tax owed is small, and penalties are tolerable.
A note on Shopify history: states can subpoena Shopify for transaction-level data on a specific seller. We have not yet seen mass subpoena programmes, but the data exists, and assuming the state can’t see your sales is wishful. Coming forward voluntarily through a VDA is materially cheaper than being found.
The Realistic Cost of DIY vs. Done-For-You Compliance
For a foreign Shopify seller with US sales in 5+ states, DIY compliance is technically possible and almost always a poor use of founder time. The real choice is software-only (cheap, partial) versus full-service (more expensive, complete).
Time cost: 46 states × monthly returns
Let’s be honest about what DIY looks like for a UK or Australian seller with nexus in, say, 12 states:
- Initial registration: 2–4 hours per state, fighting portals that weren’t built for foreign applicants. 12 states = 24–48 hours.
- Monthly compliance: each return requires pulling Shopify reports, mapping to state-specific schedules, calculating local rates, filing online, scheduling payment. 30–60 minutes per state per filing period. Twelve quarterly states = ~6 hours/quarter. Add monthly states and the number climbs.
- Notice handling: states send notices for everything — frequency change, address verification, late filing, audit selection. Dealing with each one in your second language of bureaucracy is exhausting.
- Annual review: nexus thresholds change, registration renewals, rate updates, sales-tax-holiday calendars.
Founders consistently underestimate this. The full annualised hour count for a 10-state foreign Shopify seller is typically 80–150 hours. At your hourly value as a founder, that’s not free.
Software-only solutions: what they don’t do
the major SaaS sales tax platforms — these are all calculation tools. Some offer assisted filing as an add-on. None of them:
– Register you (you do that yourself)
– Get your EIN (you do that yourself)
– Negotiate VDAs (you hire a separate firm)
– Respond to state notices (you do that yourself)
– Handle audit defence (you hire a separate firm)
– Solve the foreign-bank-account remittance problem
– Provide a US-based responsible party for any state that wants one
The software bills itself as a complete solution, then quietly excludes 80% of the work that actually needs to happen. For a foreign founder with no US tax background, the software approach is half a solution at full price.
Full-service compliance: what’s included
A full-service compliance firm handles the entire stack:
– Nexus assessment across all 46 states
– EIN application
– Registration in every nexus state
– Monthly sales-tax calculation reconciled against your Shopify
– Filing every return on every schedule
– Remitting funds to every state
– Responding to every notice
– Managing VDAs for back-tax exposure
– Audit defence if it ever comes to that
– Closing registrations when you exit a state
You stay focused on selling product. We stay focused on the 46 state portals.
Why foreign sellers in particular benefit from outsourcing
Domestic US sellers can usually muddle through DIY with software because they have an SSN, a US bank account, US addresses, US phone numbers, and a working familiarity with how state government portals behave. A foreign seller has none of those advantages and is trying to learn the system from scratch in a second jurisdiction.
The economics flip hard for non-US founders. Time spent fighting Iowa’s registration portal at 3 a.m. UK time is time not spent on product, marketing, or shipping. Outsource it.
Sales Tax Compliance USA — Built for Foreign Shopify Sellers
If you’re reading this article, you’re probably already 70% of the way to deciding you don’t want to do this yourself. Sales Tax Compliance USA handles the entire US sales tax stack for foreign Shopify, Amazon FBA, and DTC sellers — nexus assessment through registration, calculation, filing, remittance, notice response, VDA negotiation, and audit defence — for a single fee. No software for you to learn. No state portals for you to fight. No tax forms in your second language. One contact, one invoice, one peace of mind.
Book a free consultation or learn more about our service. We work with sellers in the UK, EU, Australia, New Zealand, Canada, South Africa, and beyond. If you’ve never registered anywhere, we’ll start with a clean nexus assessment. If you’ve been selling for years and never registered, we’ll plan the VDA strategy.
Frequently Asked Questions
Do I owe US sales tax if my Shopify store is registered in the UK / Canada / Australia?
Yes, if you have nexus in any US state. The location of your business registration is irrelevant to US sales tax. What matters is where your customers are and whether your activity into a given state crosses that state’s nexus thresholds.
Does Shopify collect and remit sales tax for me like Amazon does?
No. Shopify is not a marketplace facilitator. It provides tax-calculation tools but the seller is fully responsible for registration, collection, filing, and remittance. This is the single biggest mistake foreign Shopify sellers make.
Can I get a US sales tax permit without a US Social Security Number?
Yes, in most states. You’ll generally need an EIN (Employer Identification Number) — which you can obtain as a foreign entity without an SSN by filing IRS Form SS-4 by fax. Some state portals are clunky for foreign applicants and may require workarounds for US address/phone fields. See our guide on sales tax registration without an SSN.
How do I get an EIN as a non-US resident with no SSN?
File IRS Form SS-4 by fax to the IRS international EIN fax line. On the responsible-party fields, you write “Foreign” where the SSN/ITIN would go. Processing typically takes 2–6 weeks. Detailed walkthrough at how to get an EIN as a foreign entity.
Do I need a US bank account to remit sales tax?
Not always, but it makes life dramatically easier. Most states accept credit card payments (with a convenience fee) and many accept ACH from US-routable accounts (Wise Business, Mercury, etc. work in many cases). A minority of states accept international wire. If you’re operating with no US-routable account, full-service remittance is the realistic path.
What if I use ShipBob or another US 3PL — does that change my obligation?
Yes, significantly. Inventory in a US 3PL warehouse generally creates physical nexus in the state where the warehouse sits — meaning you owe sales tax there from your first sale, regardless of any economic-nexus dollar threshold. This is the most common nexus trap for foreign Shopify sellers. See physical nexus from 3PL warehouses.
How many US states do I actually need to register in?
Depends entirely on where your customers are and whether you use a US 3PL. A pure-DTC seller shipping from abroad with no US warehouse might only need to register in 3–8 states even at $1M+ revenue. A seller using a multi-warehouse 3PL might trigger physical nexus in 5–10 states from day one, plus economic nexus in another 5–15 as they scale. We do nexus assessments at Sales Tax Compliance USA.
What happens if I’ve been selling on Shopify to US customers for years and never registered?
You have back-tax exposure. The right next step is a Voluntary Disclosure Agreement (VDA) in the states where the exposure is meaningful — typically capping lookback to 3–4 years and waiving penalties. Standalone back-registration and late filing can work for shorter or smaller exposures. See our VDA guide.
Can my country’s tax treaty with the US exempt me from sales tax?
No. Income tax treaties cover income tax, not state-level sales tax. There is no treaty mechanism for sales tax exemption.
How much does full-service US sales tax compliance cost for a foreign Shopify seller?
It depends on the number of states, sales volume, and whether you have back-tax exposure to clean up. We quote a single all-in fee per engagement so you know exactly what you’re paying — no per-filing surcharges, no notice-handling extras. Book a free consultation for a quote tailored to your situation.
Last verified: 2026-05-10
This article is for informational purposes only and does not constitute tax advice. Consult a licensed tax professional before acting on any of this content.
