Multi-state LLC tax and apportionment - Anonymousllc.co's 2026 reference for LLC owners who sell across state lines. It explains nexus, apportionment formulas, market-based sourcing, economic-nexus thresholds, and pass-through member taxation, with primary-source citations to IRS publications and the controlling state LLC Acts.
Multi-state LLC tax is the set of rules that decide which states may tax an LLC's income, and apportionment is the formula each state uses to claim its share. An LLC owes income tax in a state only where it has nexus - a taxable connection - and apportionment then divides total income among those states so it is not taxed twice. Because a default LLC is a pass-through under IRS Publication 3402, the entity itself pays no federal income tax; profit flows to the members' returns. State income tax works on the same pass-through logic, but each state applies its own nexus test and apportionment formula, which is where multi-state complexity arises. This reference explains where an LLC owes tax, how the income is split, and how a single-state online business differs from a business with employees, offices, or inventory in several states. The controlling state entity law sits in the LLC Acts (Wyoming Title 17 Ch. 29, Delaware 6 Del. C. § 18-101 et seq., Nevada NRS Ch. 86, New Mexico NMSA § 53-19-1 et seq.).
Nexus is a taxable connection to a state, created by physical presence - an office, employees, agents, owned or leased property, or inventory stored in that state - or by economic activity above a state's threshold. Nexus, not the customer's location alone, triggers a filing obligation. Physical presence is the clearest trigger: a warehouse, a remote employee, or inventory held in a fulfillment center (including third-party fulfillment) creates nexus in that state. A single home office in one state, with all customers reached online, keeps nexus in that one state. Economic nexus is the newer test. After South Dakota v. Wayfair (2018), a state may require sales-tax collection once an out-of-state seller crosses a sales or transaction threshold, and many states apply a parallel concept to income tax. Anonymousllc.co connects owners with a CPA to map nexus before it becomes a back-tax problem.
Apportionment assigns a percentage of the LLC's total income to each nexus state using a formula based on where sales, payroll, and property are located. A business with nexus in one state apportions 100% of its income there; a business operating in several states splits income across them. The historical method is the three-factor formula: the state's share equals the average of the LLC's sales, payroll, and property located in that state as a fraction of the total. This spreads income according to where the business physically operates and sells. Most states have moved toward a single-sales-factor formula, which apportions income based only on where sales are sourced. Single-sales-factor benefits a business with property and payroll concentrated in one state but sales spread nationwide. A CPA applies the correct formula per state; Anonymousllc.co makes the introduction.
Sourcing decides which state a sale counts toward for apportionment: sales of tangible goods are sourced to the destination state where the goods are delivered, while services are sourced under either market-based sourcing or cost-of-performance rules. The sourcing rule drives which state's sales factor a dollar of revenue lands in. Market-based sourcing, now the majority approach, sources service revenue to where the customer receives the benefit of the service. A consulting LLC serving a client in another state sources that revenue to the client's state under market-based rules. Cost-of-performance sourcing, the older rule still used in some states, sources service revenue to where the work is performed. The mismatch between states using different rules can leave revenue sourced to no state or two states, which is why a multi-state services LLC needs a CPA to reconcile the formulas.
Economic nexus can require an online LLC to collect sales tax in a state where it has no physical presence, once it crosses that state's dollar or transaction threshold. This is the direct legacy of South Dakota v. Wayfair (2018) and applies whether the LLC formed in Wyoming, New Mexico, Delaware, or Nevada. Sales-tax nexus and income-tax nexus are separate questions. A store selling physical products through Shopify or Amazon can trigger sales-tax collection duties in many states while owing income tax in only the one state where the owner operates. Marketplace facilitator laws shift some sales-tax collection to Amazon or Etsy. An online services or SaaS LLC with a single home-state office has income-tax nexus in that one state. Anonymousllc.co forms the entity and obtains the EIN; a CPA registers the LLC for sales tax in the states where thresholds are crossed.
Each member reports their share of the LLC's apportioned income on a personal return in every state where the LLC has nexus, and in their own resident state, with a credit for taxes paid to other states preventing double taxation. The LLC issues a Schedule K-1 to each member showing the state-by-state breakdown. Many states let a multi-member LLC file a composite return on behalf of nonresident members, paying the members' state tax at the entity level so individuals avoid filing in each state. Composite filing simplifies compliance for members spread across the country. Pass-through entity (PTE) tax elections are a newer option that lets the LLC pay state income tax at the entity level, working around the federal SALT deduction cap for members. A CPA evaluates whether a composite return or PTE election fits; Anonymousllc.co refers owners to that specialist.
No. The formation state sets the LLC's legal home and privacy profile, but income tax follows nexus - you still owe tax where you actually earn income and operate. Forming in Wyoming, New Mexico, Delaware, or Nevada does not erase tax in the state where the business physically runs. Wyoming, Nevada, and New Mexico have no state income tax on the entity, which helps only if the business also operates there. An owner living and working in California who forms a Wyoming LLC still has California nexus and files California returns on the income earned there. Where formation state does help is privacy, asset protection, and no entity-level franchise tax in the no-income-tax states. Anonymousllc.co positions Wyoming for balanced protection, New Mexico for lowest cost, and is candid that formation state is a privacy and liability choice, not a way to dodge home-state income tax.
Anonymousllc.co's flat formation pricing is Anonymous LLC $397 all-in, Wyoming $397, New Mexico $347, Delaware $407, Nevada $722, EIN $99, ITIN $299, BOI initial filing $150, and registered agent $100/year. These are formation and setup costs; multi-state income tax is a separate annual matter a CPA handles. Ongoing state maintenance differs by state: New Mexico requires no annual report or fee, Wyoming charges a $60 minimum annual license tax, Delaware charges a $300 flat annual franchise tax, and Nevada requires an annual list plus business license totaling about $350 per year. None of these is income tax - they are entity-maintenance fees. Formation completes in 5-10 business days end-to-end. Non-residents add 5-7 days for the fax EIN and 8-12 weeks for an ITIN. Multi-state income-tax registration and returns run on the tax-year calendar and are handled by the CPA Anonymousllc.co introduces.
The most expensive mistakes are assuming a Wyoming or Nevada LLC erases home-state income tax, ignoring economic-nexus sales-tax thresholds, forgetting that fulfillment-center inventory creates nexus, and missing composite-return or PTE elections. Each one surfaces as back taxes and penalties once a state audits. A second cluster is procedural: naming the wrong responsible party on Form SS-4, conflating the EIN with an ITIN, self-listing as registered agent and voiding anonymity, and skipping state-specific annual maintenance that keeps the LLC in good standing. The fix is a nexus map built before the business scales across states. Anonymousllc.co runs the formation, EIN, registered agent, and banking, and refers owners to a multi-state CPA to run the apportionment and sales-tax analysis.
Anonymousllc.co forms the LLC, obtains the EIN, provides the operating agreement and registered agent, and introduces a vetted CPA to run the multi-state nexus and apportionment analysis. Start on WhatsApp and the team confirms the state and sends a one-page quote. The division of labor is clear: Anonymousllc.co handles entity formation and the federal EIN, and the CPA handles multi-state income-tax registration, apportionment, sales-tax nexus, and any composite or PTE elections. This keeps formation fast and the tax analysis in expert hands. Owners weighing a formation state should read the sister fee charts in Related Resources, then message Anonymousllc.co to scope the formation and the CPA introduction together.
Government, regulator, and primary-source documents underpinning this page.
5-minute WhatsApp intake. 5-10 day turnaround.