US Sales Tax for Sellers Based Outside the US

Can US sales tax apply when the seller is outside the US?

Yes. A seller's foreign address does not prevent a state from requiring it to collect tax on sales delivered there. California expressly includes sellers outside the United States in its remote-seller rule, and Texas provides a registration route for sellers outside the country (California CDTFA; Texas Comptroller).

US sales tax is administered mainly by states and local jurisdictions. A seller can have a collection duty in one state and none in another. For a shipment from abroad, the destination, the kind of sale, and the seller's activity in that state matter more than the country where the seller formed. The seller generally collects tax from the buyer on taxable sales and remits it to the state; when the seller is not required to collect, a buyer may instead owe use tax (California CDTFA).

Import duty does not settle the sales-tax question. California says federal import duties have no bearing on whether California sales or use tax applies to a purchase shipped from abroad (California CDTFA).

Does Canadian status or the tax treaty exempt the sale?

No. The Canada–US treaty addresses specified income and other federal taxes; its taxes-covered article does not include state sales tax. Having no US permanent establishment therefore does not, by itself, remove a state sales-tax collection duty (Canada–US treaty, Article II).

A Canadian business still has to test each destination state's registration and taxability rules. The treaty question for US income tax is separate: see when foreign owners owe US tax. Whether a Canadian corporation must file a US income-tax return is covered in Canadian corporation US tax returns.

Do sales shipped from abroad count toward a state threshold?

Yes. Shipping from abroad does not remove a sale from a destination state's count. California counts tangible goods delivered there by the seller and related persons, including its marketplace sales. Texas counts taxable and nontaxable Texas revenue from goods and services, including marketplace sales (California CDTFA; Texas Comptroller; Texas marketplace FAQ).

For the applicable thresholds and other state rules, see when you must collect sales tax. If goods sit in a US warehouse before sale, see Canadian sellers with US inventory.

If a marketplace collects tax, must the seller register?

It depends on the state and whether the seller has sales outside the marketplace. A marketplace's tax collection for its transactions does not automatically cover the seller's own site or end every registration duty (Texas Comptroller; New York Tax Department).

Keep the marketplace's collection certification, transaction reports, destination addresses, and records of direct sales. Check whether the marketplace actually collected tax on each type of transaction; do not treat its total sales report as proof that every order was covered (Texas marketplace FAQ).

Can a foreign seller register without a US tax ID or address?

Sometimes. The Streamlined Sales Tax Registration System allows a foreign seller with no US address, federal employer identification number (EIN), or US individual tax number to register in participating states through that system. The seller selects “Other” as the identification type and receives a registration number. The same FAQ says a seller with a US location or mailing address needs a federal employer identification number or Social Security number for that system (Streamlined Sales Tax FAQ).

The shared system covers only its listed member states, not California, New York, or Texas. Select states deliberately: they expect collection from the chosen registration date and set the filing schedule, including zero-tax returns where required. Registration does not erase earlier tax liability (Streamlined Sales Tax FAQ).

State processes differ. Texas lets a remote seller outside the US submit its state application by email or fax (Texas Comptroller). Check the chosen state's ID requirements. If an EIN is needed, see forming and running a US company from abroad.

Is a US company required to collect US sales tax?

No. State registration rules can apply directly to the foreign business. California's rule names foreign sellers, Texas accepts applications from remote sellers outside the US, and the Streamlined Sales Tax system accepts foreign-company registrations (California CDTFA; Texas Comptroller; Streamlined Sales Tax FAQ).

Review registration and marketplace reports for the business that actually makes the sale, and check that its invoices identify that seller consistently. Forming a US LLC or corporation changes the entity and may add other filings; compare structures in setting up a US business as a Canadian resident.

Are digital products, software, and services taxed alike?

No. The state and the product's legal classification control. A seller should identify exactly what the customer receives and where the customer uses it before treating all digital receipts as exempt or taxable.

For example, New York taxes licenses to use prewritten software, including remote access (New York Tax Department). California generally does not tax software, eBooks, apps, or digital images transmitted online without physical media; a physical backup copy usually makes the whole sale taxable (California CDTFA). Services can follow different rules. See when you must collect sales tax for the product-by-state check.

Can sales-tax registration affect other state taxes?

Yes. Sales-tax registration and other state tax obligations have different tests, but applying for a permit can itself matter. Texas says a taxable entity's franchise-tax nexus can begin when it obtains a Texas use-tax permit, even if its other franchise-tax economic-nexus test was not met (Texas Comptroller).

Before voluntarily registering, identify the entity that will hold the permit and check that state's other business-tax and filing rules. A sales-tax permit also brings return and recordkeeping duties. If several states are involved, review the states together before filing applications or choosing an entity; cross-border tax help can address the combined position.

Example

Illustrative amounts in US dollars. A Canadian company ships goods directly from Canada to Texas buyers. For the twelve calendar months ending in August, its Texas sales first exceed the safe harbor: US$220,000 through its own site and US$310,000 through a certified collecting marketplace.

The company's combined Texas revenue is US$530,000, above the $500,000 safe harbor because marketplace sales count. If it has no other Texas activity changing the result, it must obtain a Texas permit and begin collecting on taxable own-site sales by December 1. The certified marketplace continues collecting on its sales. The company keeps the marketplace certification and both sets of sales records (Texas Comptroller; Texas marketplace FAQ). Import duty paid on a shipment would not replace a separate state sales or use tax where applicable (California CDTFA).

Different for you?

• You sell into several states or are near a threshold: gather monthly sales by destination, product, channel, and seller entity; see when you must collect sales tax or get cross-border tax help.
• You keep inventory in a US warehouse: storage can change the state-tax test; see Canadian sellers with US inventory.
• You passed a state threshold without collecting: the dates and earlier returns matter; see catching up on uncollected sales tax.
• A Canadian corporation sells to US customers: its income-tax return question is separate; see Canadian corporation US tax returns.
• You also sell to Canadian customers: see when to register for GST/HST or, for a business outside Canada, non-resident and digital sellers.
• Your own-site sales include software, mixed services, or several destination states: gather contracts, invoices, platform reports, existing permits, and any EIN; get cross-border tax help to review taxability and registration by state.