Nexus

A connection to a state sufficient to trigger state-level tax obligations.

Definition

Nexus is the legal connection that creates state tax obligations. Types: physical nexus (employees, office, warehouse), economic nexus (sales volume), click-through nexus (affiliate relationships).

Context

Delaware LLC with no Delaware operations has no Delaware sales-tax nexus (Delaware has no sales tax). Nexus arises in other states where the LLC operates or sells.

Example

A Delaware LLC ships products to California customers. After exceeding California's $500K economic-nexus threshold, the LLC must register for California sales tax.

Common pitfalls

Economic nexus thresholds vary by state ($100K-$500K).
Wayfair decision (2018) expanded economic-nexus rules.
Nexus for sales tax differs from nexus for income tax.

What nexus really means for a non-resident founder

Nexus is the connection between a business and a particular US state that gives that state the legal authority to impose obligations on the business. The word comes from a Latin root meaning a binding or a link, and that image is useful. A state cannot simply reach across its borders and tax or regulate any company in the world. There has to be a tie that the law recognizes as strong enough. For a founder living outside the United States who has formed a single-member Delaware LLC, the practical question is rarely abstract. It is whether a given state can ask the company to register, collect a tax, or file a return. Most of the time, for an operator with no US staff and no US premises, the honest answer is that no state outside Delaware has that hook.

It helps to separate the idea of nexus from the idea of where a company is formed. Forming in Delaware establishes the LLC as a Delaware entity, and Delaware is the one state where the company always has a home connection. That home connection does not automatically create tax bills in other states, and it does not create one in Delaware either beyond the flat annual obligation tied to the entity itself. Nexus is about activity and presence layered on top of formation, not about the certificate sitting in a drawer.

Because the term shows up in sales tax, income tax, and registration contexts that each use slightly different tests, founders often assume nexus is a single switch. It is closer to a family of switches, each governed by its own rules. Understanding which switch a particular obligation depends on is the first step to reasoning about your own exposure rather than guessing.

Why a Delaware home base does not create nexus everywhere

A common worry among first-time founders is that registering in Delaware somehow plants a flag that other states will notice and react to. That is not how the system works. Delaware formation gives the company legal existence and a registered agent address inside Delaware, and that is the extent of the footprint that formation alone produces. Selling to a customer in another state, accepting a payment from someone in that state, or shipping a digital file to a buyer there does not by itself hand that state a claim over the company, at least not until activity crosses thresholds the state has defined.

This is why the glossary entry notes that a Delaware LLC with no Delaware operations has no Delaware sales-tax nexus, partly because Delaware has no sales tax at all. The point generalizes. The mere fact that the company exists as a Delaware entity is not an operating presence in any of the other forty-nine states. Operating presence is something you build through people, property, or volume, and a founder working alone from abroad usually builds none of it.

The reassuring consequence is that a tightly scoped non-resident operation tends to have a very small nexus surface. The company files its federal information returns, pays its Delaware obligation, and otherwise stays below the lines that would pull it into other states. The risk is not that Delaware spreads nexus outward. The risk is that growth choices made later, often without thinking about tax, quietly create nexus where none existed before.

The three classic flavors of nexus

The glossary entry lists physical nexus, economic nexus, and click-through nexus, and it is worth slowing down on each because they trigger on different facts. Physical nexus is the oldest and most intuitive. It arises when the company has something tangible in a state, such as an employee who lives and works there, an office or storefront, or inventory sitting in a warehouse. The presence does not have to be large. A single remote worker or a pallet of goods can be enough under many state interpretations.

Economic nexus is the newer concept and the one that surprises people who assumed presence required a body or a building. It is triggered purely by the volume of sales into a state, measured in dollars or sometimes in the number of transactions, with no physical footprint required at all. This is the type that can reach a founder who never sets foot in the country, because shipping enough product or selling enough into one state can cross its threshold on its own.

Click-through nexus is narrower and ties to affiliate relationships. It can arise when in-state partners refer customers to the business in exchange for a commission, on the theory that those referrers act as a kind of in-state sales channel. It matters less for most lean foreign-owned operations than the first two, but it is worth knowing it exists, especially for founders who run referral or affiliate programs and recruit partners who happen to be based in particular states.

How nexus applies to a single-member foreign-owned LLC

The single-member foreign-owned LLC is a specific creature, and its nexus profile reflects that. By default this entity is a disregarded entity for US federal income tax, meaning the IRS looks through it to the owner. That federal treatment does not directly decide state nexus, but it shapes the overall picture. The owner is abroad, the company has no US workers, and operations happen on a laptop in another country. Under those facts, the physical-nexus test fails in every state, because there is no person, office, or inventory anywhere in the US.

That leaves economic nexus as the main avenue through which such a company could acquire state obligations, and even then only for sales tax in states where the relevant goods or services are taxable and the threshold is crossed. A founder selling consulting or software services to business clients, for example, often sells into a mix of states without concentrating enough taxable sales in any one to trip a threshold. A founder selling physical consumer goods at scale to one populous state is in a different position. The structure is the same on paper, but the activity determines exposure.

The takeaway is that the legal form of the entity does not predetermine nexus. Two identical Delaware single-member LLCs owned by non-residents can have completely different nexus footprints depending entirely on what they sell, to whom, in what volume, and whether they ever place people or property inside a state. This is general information and not tax advice, and the specific taxability of a product or service in a given state is a fact worth checking before drawing conclusions.

A worked example with a services business

Consider a founder in Dhaka who forms a Delaware LLC to sell design and brand-strategy services to clients around the world. She works alone from her home, has no US bank-funded office, and delivers everything digitally. Her clients include a handful of US companies in California, New York, and Texas, plus customers in Europe and Asia. She invoices a few thousand dollars per project. In this scenario she has no physical presence in any US state, so physical nexus is off the table entirely.

On the economic side, most states do not impose sales tax on professional services the way they do on tangible goods, and even where some services are taxable, her per-state volume is modest. She is not concentrating hundreds of thousands of dollars of taxable sales into a single state. The realistic conclusion is that she has a Delaware entity, a federal filing obligation, and no sales-tax registration duty triggered by these facts. She still files her federal information return and pays her Delaware obligation, but she is not pulled into multistate sales-tax compliance.

Now change one fact. Suppose she later hires a full-time employee who lives in Texas to manage client accounts. That single hire plants a physical presence in Texas. As the foreign-qualification entry in this glossary describes, that employee can create nexus in Texas and require the company to register there and deal with Texas state tax obligations. The services did not change. The people did, and people are one of the surest ways to create nexus.

A worked example with physical products

Take a second founder who forms a Delaware LLC to sell phone accessories online to US consumers. He lives in Manila, runs the store from there, and ships from a third-party fulfillment network inside the US. Two nexus questions appear immediately. First, where his inventory physically sits can create physical nexus, because goods stored in a warehouse in a state are a presence in that state under many interpretations. The fulfillment-and-marketplace entry in this glossary makes the same point about inventory stored across a network potentially triggering nexus.

Second, the volume of his sales into each state matters for economic nexus. As his store grows, he may ship enough into a large market to cross that state's threshold even without any inventory there. The glossary entry uses California as the worked example, noting that after exceeding California's $500K economic-nexus threshold the LLC must register for California sales tax. The same logic applies state by state, each with its own line, so a fast-growing product business can accumulate registration duties in several states over a single year.

The contrast between the services founder and the products founder is the heart of the matter. Same entity type, same non-resident owner, same Delaware formation, but the products founder has a meaningfully larger nexus surface because goods move through US warehouses and sell in concentrated volume. Mapping where inventory rests and tracking sales by state are the practical habits that keep a product seller from being caught off guard.

Economic nexus and the Wayfair turning point

The pitfalls in the glossary entry mention that the Wayfair decision of 2018 expanded economic-nexus rules, and that history explains why remote sellers think about state sales tax at all. Before that US Supreme Court decision in South Dakota v. Wayfair, a state generally could not require an out-of-state seller to collect its sales tax unless the seller had physical presence there. That older rule meant a company shipping into a state from outside it often had no collection duty no matter how much it sold.

Wayfair changed the constitutional baseline by holding that physical presence is not required for a state to impose a collection obligation. States responded by enacting economic-nexus statutes built around sales thresholds, and the companion entry on economic nexus describes the common pattern of $100K in sales or 200 transactions in many states, with higher figures in some. The effect is that a purely remote seller, including a non-resident running a Delaware LLC, can now acquire collection duties through volume alone.

For a foreign founder this is the single most important development to internalize, because it breaks the comfortable assumption that staying physically outside the US keeps you outside its tax registration system. Physical absence still defeats physical nexus, but it does not defeat economic nexus. The line that matters for a remote seller is the dollar or transaction threshold in each state where taxable sales land, not the location of the founder.

How nexus connects to formation and the franchise tax

Founders sometimes blur nexus together with the costs of simply having a Delaware entity, so it is worth drawing the line clearly. Forming the LLC involves a $110 Certificate of Formation filed with Delaware, and many founders use a flat $297 one-time formation service to handle that filing and the surrounding setup. Once the entity exists, Delaware charges a $300 flat franchise tax due June 1 each year for the LLC. None of these are nexus-driven. They are the price of the entity existing as a Delaware company, owed regardless of where or whether it sells anything.

Nexus obligations sit entirely on top of that baseline and are driven by activity in other states. The Delaware franchise tax does not change because the company has nexus in California, and a California sales-tax registration does not reduce the Delaware obligation. They are separate ledgers. Keeping them mentally separate prevents the mistake of thinking that paying Delaware somehow covers other states, or that having activity elsewhere lets you skip Delaware.

This separation also clarifies budgeting. The Delaware baseline is predictable and small, a known $300 each year plus formation costs. Nexus-driven costs are variable and depend on the founder's own growth decisions. A founder who keeps operations lean and remote may never add a dollar of multistate registration cost, while a founder who scales into US warehousing and hiring will accumulate filings in proportion to that footprint. The entity cost is fixed, but the nexus cost is something the founder largely controls.

Nexus, the EIN, and federal filings are not the same thing

A frequent point of confusion is the relationship between getting an EIN, filing federal forms, and having state nexus. The EIN is a federal taxpayer identification number for the entity, obtained for free by filing Form SS-4, with the number typically arriving in roughly 8 to 10 business days for a non-resident applicant without an existing US tax ID. Having an EIN is a federal matter. It does not register the company in any state and does not create or signal nexus anywhere.

Likewise, the federal obligations that fall on a foreign-owned single-member LLC, most notably Form 5472 filed together with a pro forma 1120, are federal information filings. Missing them carries a penalty that starts at $25,000, so they matter a great deal, but they live at the federal level. Filing or failing to file them does not change the state-nexus analysis. A company can be perfectly current on its federal 5472 obligation and still have zero state nexus outside Delaware, and that is the normal situation for a lean non-resident operation.

Drawing these lines matters because founders sometimes overcorrect, assuming that because they have an EIN and file federal forms they must also owe something to many states. The opposite mindset, ignoring nexus because federal filings feel like the whole story, is equally risky for a product seller crossing economic-nexus thresholds. The healthy posture is to recognize three distinct layers, federal identity and filings, the Delaware entity baseline, and state nexus, and to treat each on its own terms.

Banking does not create nexus

Non-resident founders open US-oriented accounts through providers such as Mercury, Wise, Relay, Lili, or Payoneer to receive payments and pay vendors, and a natural worry is whether holding a US account or routing money through US payment rails creates nexus somewhere. As a general matter, having a business account does not by itself create state tax nexus. Nexus turns on operating presence and sales activity, not on where the company parks its cash or which fintech provides the account.

It helps to separate the money plumbing from the business activity. An account is an instrument for receiving and sending funds. The taxable facts are what the company sells, to whom, in what volume, and where it places people and property. A founder can hold a Mercury or Wise account and still have no physical presence and no economic-nexus threshold crossed in any state, because the account is not a warehouse, an employee, or a stream of taxable sales into a state.

That said, banking and nexus do touch the same growth story. As a company scales, it tends to sell more, sometimes hire, and sometimes warehouse goods, and those are the activities that create nexus. The account simply makes the larger volume possible. So while the act of banking is nexus-neutral, the growth that banking supports can carry nexus consequences. The useful framing is that the account is a tool, and nexus follows the activity the tool enables, not the tool itself.

Foreign qualification is what nexus often leads to

When nexus does arise in a state other than Delaware, the usual next step is foreign qualification, and the related entry in this glossary explains it in detail. Foreign qualification is the process of registering a Delaware-formed entity to do business in another US state where it has nexus. The states do not view a Delaware LLC operating within their borders as a local company until it registers, so qualifying is how the company gets permission to operate lawfully and meet that state's filing and tax requirements.

The connection between the two concepts is direct. Nexus is the trigger, and foreign qualification is one of the responses. When a founder hires a US-resident employee in a state, leases space there, or crosses an economic-nexus threshold, the company may need to foreign-qualify in that state, register for the relevant state taxes, and begin filing state returns. The foreign-qualification entry uses exactly this kind of example, where a Texas-based employee creates nexus and pulls the company into Texas registration and franchise-tax filings.

Costs and procedures vary by state, and the foreign-qualification entry flags California as a notable case with a $70 application plus an $800 minimum annual LLC tax. The broader point for a non-resident founder is that nexus is not the end of the story but the beginning of a compliance sequence. Recognizing nexus early gives time to qualify properly, while discovering it late can mean back taxes and penalties in the affected state. This is general information rather than legal advice, and the specifics of any state's process are worth confirming before acting.

BOI reporting and why it is unrelated to nexus

Founders researching compliance often run across beneficial ownership information reporting and wonder whether it interacts with nexus. It does not, and the two belong to different systems. Beneficial ownership reporting under the federal framework administered by FinCEN concerns disclosing who ultimately owns or controls an entity. It is an anti-money-laundering transparency measure, not a tax connection to a state. Under the FinCEN Interim Final Rule of March 26 2025, US-formed LLCs are exempt from the beneficial ownership reporting requirement, which removes a step many non-resident founders previously expected to handle.

Nexus, by contrast, is about whether a state has a tax claim on the company because of presence or sales activity. The beneficial ownership question asks who stands behind the company at the federal transparency level, while the nexus question asks where the company's activity reaches into the state tax systems. They do not feed each other. A company exempt from beneficial ownership reporting can still have economic nexus in a state, and a company with no nexus anywhere outside Delaware still sits within the federal ownership-transparency framework even when exempt from filing under it.

Keeping these separate prevents a common tangle where founders try to build one master compliance checklist that mixes federal ownership disclosure, federal tax filings, the Delaware entity baseline, and state nexus into a single undifferentiated worry. Each has its own trigger and its own home. Nexus lives in the state tax world, and the beneficial ownership rule lives in the federal transparency world, and treating them as one tends to produce both unnecessary anxiety and missed steps.

Edge cases that surprise founders

Several situations create more nexus than founders expect. Inventory placed into a third-party fulfillment network is a frequent one, because goods stored in a state warehouse can constitute physical presence even though the founder never chose that specific location and never visited it. A founder who lets a fulfillment provider spread stock across multiple states may, under some interpretations, acquire physical presence in each, which is why product sellers track where their inventory rests rather than assuming it stays in one place.

Another edge case is the slow accumulation of economic nexus across a single year. Thresholds are usually measured over a period, so a seller can start the year clearly under a state's line and cross it mid-year as sales build, picking up a registration duty from that point. Because the thresholds vary widely, often described in the related entry as ranging from $100K to $500K depending on the state, a founder selling broadly needs to watch several lines at once rather than one. Tracking tools that monitor per-state sales help a multistate seller see a threshold approaching before it is crossed.

Affiliate and referral programs form a subtler edge case tied to click-through nexus. Recruiting in-state partners who earn commissions for sending customers can, in some states, be treated as creating a connection. A founder running an affiliate program who happens to sign up partners concentrated in particular states should at least be aware that the arrangement is not automatically nexus-free. None of these edge cases are universal, and each depends on the specific state's rules, but they are the situations where a lean operation unexpectedly grows a nexus footprint.

Common misunderstandings to unlearn

The first misunderstanding is that forming in Delaware spreads tax obligations across the country. It does not. Delaware formation creates a Delaware entity with a flat annual obligation and nothing more, and nexus elsewhere depends on activity, not on the certificate. A founder who keeps operations remote and lean can run a Delaware LLC for years with no state obligations beyond Delaware's, because the activity that creates nexus never materializes.

The second misunderstanding is that being physically outside the US makes nexus impossible. Before Wayfair that was closer to true for sales tax, but the 2018 decision and the economic-nexus statutes that followed mean a purely remote seller can acquire collection duties through volume alone. Physical absence defeats physical nexus but not economic nexus, so a non-resident product seller shipping heavily into one state can owe a registration there despite never entering the country. This is the assumption most worth retiring.

The third misunderstanding is treating sales-tax nexus and income-tax nexus as the same switch, and treating nexus as if it were settled by federal filings or by having a US bank account. Each of these lives in its own lane. Sales tax and income tax use different standards, federal forms like the 5472 and the EIN are federal matters, and a Mercury or Wise account is plumbing rather than presence. A founder who keeps these lanes distinct, watches economic-nexus thresholds where they sell taxable goods, and seeks professional help for any state where real activity lands will reason about nexus far more accurately than one who collapses everything into a single fear. This is general information and not legal or tax advice.

Related terms

Related glossary terms & guides

Form your LLC WhatsApp

WhatsApp Form your LLC