Foreign Companies with Projects in Norway: The Complete Guide to Employees, Tax and Compliance

Can a foreign company bring employees to Norway?

Yes. But the answer depends on four things:

The nationality of the workers — and, just as importantly, which company employs them and where that employer is established.
Whether the company has a permanent establishment in Norway.
Whether the workers are hired out, or working under a contract for a result.
Whether Norwegian payroll and reporting obligations arise.

Foreign companies frequently assume immigration is the main issue. In practice, tax and reporting obligations create the largest risks — and they are the ones that quietly accumulate fines and back-taxes while everyone is focused on permits.

If you are a CEO or business owner weighing a move into Norway, the real question is rarely «what are the rules?» — it is «how do we enter cleanly, on time, and without taking on hidden liability while we focus on winning the actual work?» This guide covers all three regulatory layers — immigration, tax, and labour/social security — end to end. Read it to understand the terrain. The point of the detail below is to show you exactly where the risk and cost sit, so you can decide how much of it you want to carry in-house — and how much to simply hand to someone who does this every week.

Common mistakes we see

Before the detail, the errors that cost the most — every one of these is avoidable:

Bringing workers to Norway before obtaining D-numbers, then being unable to run payroll or order site ID cards.
Assuming the 183-day rule always protects employees — it doesn’t, and several common structures override it from day one.
Confusing hiring-out of labour with a contract for a result — the classification, decided by the tax authority, changes the entire tax outcome.
Ignoring RF-1198 / RF-1199 — the reporting duty applies even when everyone is lawfully present, and missing it carries enforcement fines.
Assuming a NUF avoids Norwegian tax — it doesn’t. Registration is not a tax shield; activity determines liability.
Treating an EEA residence card as a work permit for Norway — a non-EEA worker’s home-country card does not, by itself, grant the right to work here.

The three systems you’re actually navigating

Most companies think they have one problem («can our people work here?»). You have three, run by three authorities that don’t coordinate with each other:

Immigration — is the person allowed to be present and work? (UDI / police)
Tax — is the company taxable here, and is the employee taxable here? (Skatteetaten)
Labour & social security — whose wage rules, minimum pay and social-security system apply? (Arbeidstilsynet / NAV / home country)

The single most expensive misconception is treating these as one question. A worker can be fully entitled to be in Norway and still be taxable from day one. A company can owe Norwegian corporate tax even where its individual workers do not. And a person can be exempt from Norwegian social security while still being fully taxable here. Each layer is decided on its own test.

Your options for entering the Norwegian market

Before the compliance detail, the strategic question an owner actually has to answer: what structure do we use to do business here? There are four common routes, and the right one depends on how long you’ll be active, how much control you need, and your permanent-establishment exposure.

Route	What it is	Best when
Posted workers (no Norwegian entity)	Your existing company performs a temporary service in Norway with its own staff	Short, defined projects; you keep people on home-country payroll; PE risk is low and managed
NUF (Norwegian-registered branch)	Your foreign company registered in Norway for an organisation number	You need to invoice, run Norwegian payroll, hire locally or order HSE cards — but don’t want a separate company
AS (Norwegian subsidiary)	A separate Norwegian limited company you own	Long-term commitment, local hiring at scale, a Norwegian-facing brand, or limiting liability to the local entity
Employer of Record (EOR)	A third party legally employs your staff in Norway on your behalf	You want a handful of people working fast without setting up your own entity or payroll

There is no universally «right» answer — the choice trades off speed, cost, control, liability and tax exposure. But the decision should be made deliberately and early, because it determines almost everything downstream: whether you need a NUF, who runs payroll, how the permanent-establishment question plays out, and what you report. Choosing by accident — usually by just sending people and dealing with it later — is how companies back into liability they never priced in.

The rest of this guide explains the compliance reality behind each of these routes. If you’d rather skip to the decision, the fastest path is a short assessment of your specific project — covered at the end.

1. Who are your employees, legally?

Everything downstream depends on one classification: where each worker holds citizenship, and which company employs them.

EEA nationals — free movement, light registration

Citizens of EU/EEA countries do not need a residence permit to work in Norway. The obligations are administrative:

A non-Nordic EEA citizen staying more than three months must register with the police within three months of arrival, and must have a qualifying reason to stay — employed, self-employed, posted worker, student, or self-sufficient.
Nordic citizens (Swedish, Danish, Icelandic, Finnish) can work without registering with the police, but must notify the National Population Register (Folkeregisteret) of a move.

This is the easy case. The hard — and most misunderstood — case is the next one.

Non-EEA nationals — the question everyone gets wrong

The instinct is: «My employee is from India / the Philippines / Ukraine / Brazil, so they need a Norwegian work permit before they can set foot on the project.» That instinct is often wrong, and getting it wrong in either direction costs money.

A third-country (non-EEA) national who is legally employed by a company established in another EEA country can usually be posted to work in Norway without first obtaining an ordinary Norwegian work permit.

This flows directly from the EEA Agreement’s freedom to provide services. Norway is not in the EU, but it is in the single market — so a company in Portugal, Poland or Germany that has lawfully hired a non-EEA worker into its regular workforce can bring that worker to Norway to perform a temporary service. This is the route most practitioners still refer to by its old case name, Vander Elst.

In practice the non-EEA worker applies for a residence card for posted workers (or for business establishers, if they are setting up operations), rather than an ordinary skilled-worker permit.

This is not automatic, and UDI has tightened its practice over the years. Each case must satisfy UDI’s requirements regarding: the worker’s lawful residence and authorisation to work in the sending EEA country; genuine, habitual employment there; and a temporary purpose.

The contrast: direct hire into Norway

A non-EEA national hired directly into Norway by a Norwegian employer almost always needs an ordinary residence permit for work — commonly the skilled-worker permit. The deciding factor is who employs the worker and where that employer is established — not the worker’s passport.

2. The contract structure decides almost everything

Before touching tax, classify the contract under which the work is delivered — because the Norwegian tax authority, not you, decides which of two boxes it falls into, and the box changes the tax outcome dramatically.

Contract for a result (entreprise)

The foreign company is responsible for delivering a defined result — a finished installation, a completed structure, a working system. It directs its own people, carries the risk, and is paid for the outcome.

Hiring-out of labour (innleie / utleie av arbeidskraft)

The foreign company supplies personnel to work under the Norwegian client’s direction and control, and is not responsible for the result of their work.

Why it matters

	Contract for a result	Hiring-out of labour
Employee’s 183-day treaty protection	Generally available	Lost — employee taxable from day 1
Company corporate-tax exposure	Only if a PE arises	Liable under domestic rules from day 1

The classification turns on substance, not the contract’s title. Companies that believe they have a clean contract-for-result, but in practice take daily instructions from the Norwegian client, risk being re-characterised as hiring-out.

What getting this wrong actually costs

For a CEO, the risk shows up in three places: Cash (back-taxes, fines and penalty charges); Time (a date error in a single form can leave your crew turned away at the site gate); and Reputation (your client carries joint liability for parts of this).

Planning to enter the Norwegian market?

Accounts Lab helps foreign companies and their owners enter Norway cleanly & stay compliant: Entry structure • Registration • Payroll • RF-1198/RF-1199 reporting • Fixed price, one senior contact.

Book a no-obligation Norway market-entry assessment →

3. When does your company become taxable in Norway?

A foreign company is taxable in Norway on Norwegian-source business income, but a tax treaty will usually only let Norway tax that income where the company has a permanent establishment (PE) here. Norway’s corporate tax rate is 22%.

The construction clock

For construction and installation projects, a PE generally arises only if the project lasts more than 12 months (6 months under some treaties; 30 days on the continental shelf).

The trap: linked sub-projects are counted together

A real 2023 Tax Appeal Board decision (SKNS1-2023-54): a German company installed equipment on four Norwegian ships over four years — each individual stint was short, but the four deliveries were strongly connected and formed one joint assignment that exceeded 12 months. Plan the PE question around the whole engagement, not the individual mobilisation.

Hiring-out and corporate tax

A foreign company that hires out labour into Norway is liable for corporate tax from the first day.

4. When does your employee become taxable in Norway?

The employee likely escapes Norwegian tax only if: they stay fewer than 183 days; their employer has no PE; they are not hired out; and they are not working for a Norwegian enterprise.

The day-one traps

The employee is taxable from day one if: they are hired out; the cost is charged to a PE; or they work for a Norwegian employer.

How the tax is collected: the PAYE scheme

Most foreign workers are placed into the PAYE scheme (kildeskatt på lønn): a flat 25% of gross salary (17.4% with an A1 certificate), final, with no return and no deductions, up to NOK 725,050 for 2026.

5. Social security & the A1 certificate

Tax residence and social-security membership are different questions. The A1 certificate documents that a posted EEA worker remains in their home country’s social-security system — lowering PAYE from 25% to 17.4% and exempting the employer’s 14.1% contribution. Collect the A1 before the assignment starts.

6. The reporting machine — where the fines live

Even when every person is lawfully present and the tax position is clear, Norway requires the activity to be reported into the Assignment and Employee Register — and missing this carries enforcement fines.

RF-1199 — filed by the party awarding the contract. Covers contracting parties, place of work, contract period and value.
RF-1198 — filed by the foreign contractor (see full reporting guide). Covers each worker’s identity and the periods they work.

Date errors are costly: mistakes in reported dates become a direct obstacle when ordering construction ID cards. Report before mobilisation — at the latest within 14 days of work commencing.

Register the entity first

A foreign company usually needs to register with Brønnøysund as a NUF to obtain a organisation number. A NUF is a branch registration, not a separate legal entity, and not a tax shield.

7. Construction-specific compliance

If the project is on a building or construction site, three extra obligations apply.

HSE card (HMS-kort, byggekort)

Every worker on a building or construction site must carry a valid HSE card, worn visibly. It cannot be ordered until the company has an organisation number, the worker has a D-number, and the assignment/workers have been reported.

Allmenngjøring — the minimum-wage floor

In sectors where a collective agreement has been generally applied — construction prominent among them — a statutory minimum wage and minimum terms apply to posted workers too.

Joint and several liability

A main contractor can be held jointly and severally liable for a subcontractor’s failure to pay the minimum wage.

The harder situations that trip people up

1. “We’re well under 183 days, so the staff are fine.»” Only true for a clean contract-for-result with no PE and no Norwegian cost charge-back.

2. “Each phase is a short, separate job.»” Commercially linked phases can be aggregated for the PE clock.

3. “The company has no PE, so nobody owes anything.” Company-level and employee-level questions are independent.

4. “Our non-EEA worker obviously needs a Norwegian work permit.” Not if genuinely employed by an EEA-established company — then the posted-worker residence card usually applies.

5. “A1 is just paperwork.” It changes your rates — PAYE 17.4% vs 25%. Filing late means over-withholding and a refund process. Get it before mobilisation.

A practical sequencing checklist

Classify the contract — result vs hiring-out.
Map each worker — EEA / non-EEA, decide immigration route.
Register the entity — organisation number via Brønnøysund.
Secure A1 certificates before mobilisation.
Report assignment and workers — RF-1199 (client) and RF-1198 (contractor).
Obtain D-numbers and tax deduction cards — confirm PAYE vs ordinary.
Order HSE cards for construction sites.
Run compliant payroll — a-melding, correct PAYE basis.
Assess PE on the whole engagement, not phase by phase.

Frequently Asked Questions

Can a non-EU employee of a Portuguese company work in Norway? Often yes — provided UDI’s conditions on lawful residence, genuine employment and temporary service are met. It is not automatic.

When does a foreign company become taxable in Norway? When it has a permanent establishment here. For construction projects, a PE generally arises only if the project lasts more than 12 months (6 months under some treaties; 30 days on the continental shelf).

What is the 183-day rule? A tax-treaty rule that can exempt a foreign employee from Norwegian tax — only if the employer has no PE here and the worker is neither hired out nor working for a Norwegian enterprise.

What is RF-1198? The report a foreign contractor files to register employees working on its Norwegian assignment. The basis for D-numbers and tax deduction cards.

What is the PAYE scheme? 25% of gross salary deducted at source (17.4% with an A1), final, with no return and no deductions, up to NOK 725,050 for 2026.

Why foreign companies use Accounts Lab to enter Norway

Foreign companies rarely fail in Norway because the rules are impossible. They fail because three authorities, ten sequential steps and a stack of forms all have to line up — and one date error eight steps back leaves your crew standing at the site gate. With Accounts Lab you get:

One accountable state authorised accountant who owns the whole chain.
Fixed pricing (fastpris): you know the cost before the project starts.
Proactive oversight: we sequence the registrations so nothing stalls.

How we work

Market-entry assessment — we identify your PE exposure and recommend the right entry route.
Setup and registration — entity registration, worker reporting, D-numbers, tax cards, HSE cards.
Ongoing accounting — payroll, reporting and compliance current.

Book a no-obligation Norway market-entry assessment →

Related Guides for Foreign Companies in Norway

General information for finance and operations leaders, not individual tax or legal advice; treatment depends on the specific tax treaty, contract structure and facts. Figures (PAYE rate and ceiling, national-insurance rates, corporate tax, HSE-card fee) are stated for 2026 and should be re-checked against the current year’s rates before relying on them. Primary sources: Skatteetaten, UDI, Arbeidstilsynet, Altinn, and NAV/