EIN for Norwegian LLC Owners: Complete 2026 Guide

With an EIN in hand, Mercury and Relay both currently accept Norway-based applicants for remote US business bank account opening without country-level restrictions. From there, EIN plus bank account is what unlocks Stripe, PayPal, and most US payment processors. Given how much the NOKUS outcome depends on whether your LLC's income is classified as mainly active or mainly passive, it's worth a short conversation with a Norway-based tax advisor to document that classification clearly from year one, rather than reconstructing it later during a tax review.

The most common issues: leaving line 7b of the SS-4 blank instead of writing 'Foreign' or 'N/A' for the SSN/ITIN field; assuming NOKUS automatically applies just because a US LLC fails the two-thirds low-tax test, without checking the treaty-based active-income exception first; using an outdated IRS fax number; and structuring an LLC so that most of its income is investment or royalty-type (mainly passive), which would pull the arrangement back into NOKUS scope even under the treaty exception.

Before applying, gather: your LLC's Articles of Organization or Certificate of Formation, a fully completed Form SS-4 addressing every applicable field, your passport to identify the responsible party (no SSN or ITIN required), a US mailing address (a registered agent or virtual mailbox works fine), and a short description of what the business does. An incomplete SS-4 remains the most common reason applications get sent back for correction.

If a live call doesn't fit your schedule, fax your completed SS-4 to 304-707-9471 (the line for applicants outside the US) and expect your EIN confirmation in 4 to 6 weeks. Mailing to the IRS's Cincinnati processing center is also available, but adds international transit time on top of the same 4-6 week base window, making it the slowest of the three routes.

Once your EIN arrives, a foreign-owned single-member LLC that's disregarded for US federal tax purposes must file an annual pro-forma Form 1120 together with Form 5472, disclosing transactions between the LLC and its Norwegian owner - capital contributions, distributions, and intercompany loans included. This is purely informational when there's no US-source income, but the penalty for a missed or late Form 5472 starts at $25,000 minimum, regardless of whether any actual US tax was owed. This filing runs on its own schedule independent of whether Norway's NOKUS rules ultimately apply to the same income.

The fastest EIN route from Norway is the IRS international applicant line, 267-941-1099, open Monday through Friday, 6:00 AM to 11:00 PM Eastern Time - which corresponds to Norwegian afternoon and evening hours, a comfortable window given the roughly 5-6 hour time difference. Have your completed Form SS-4 ready before calling: LLC legal name, formation state and date, responsible party's name and passport number (no US SSN or ITIN needed), and a short business-purpose description. Budget 45 to 60 minutes for the full call including hold time and the live SS-4 walkthrough with the IRS agent - noticeably longer than the 20-30 minutes some older guides still quote.

A US LLC gives Norwegian founders a fast, globally recognized way to bill international clients, sell through US marketplaces, or run a SaaS product without setting up a full Norwegian AS. It's cheap to form, comes with a liability shield, and pairs cleanly with Stripe and US banking. None of that is usable, though, until the LLC has an Employer Identification Number (EIN) - the credential that unlocks a US bank account, payment processing, and the annual US tax filings the LLC owes regardless of whether it earns US-source income. This guide covers the EIN mechanics from Norway, plus a genuinely favorable treaty-based exception in Norway's CFC rules that many owners never learn about.

Norway's controlled foreign company regime, known as NOKUS, taxes Norwegian individuals and companies on their proportionate share of a foreign company's profits when two conditions are met: Norwegian taxpayers own or control at least 50% of the foreign entity (control at year-end above 60% establishes Norwegian control regardless of the level at the start of the year), and the entity is domiciled in a low-tax jurisdiction, defined as having an effective tax rate below two-thirds of the comparable Norwegian rate. This taxation applies whether or not the foreign company has actually distributed any dividends. A single-member US LLC taxed at 0% federal entity-level rate would, on its face, clear the low-tax threshold easily.

Here's the distinctive part: where Norway has a tax treaty with the country where the foreign company is resident, and the entity is covered by that treaty, NOKUS rules only apply if the entity's income is mainly of a passive nature. The United States and Norway have a tax treaty in force, so a US LLC covered by it is subject to this narrower test - meaning that if your LLC's income is genuinely active business income (consulting fees, product sales, SaaS revenue) rather than mainly passive income (dividends, interest, royalties), NOKUS taxation may not apply to you at all, even though the LLC sits in a jurisdiction that fails the two-thirds low-tax test on paper. This is a real, treaty-anchored carve-out, not a loophole - but whether your specific income mix genuinely qualifies as 'mainly passive' versus 'mainly active' is a fact-specific determination worth confirming with a Norway-based tax advisor.