The legal framework
Norway prices controlled transactions through one short provision. Section 13-1 of the Taxation Act (skatteloven, Act of 26 March 1999 no. 14) is drafted not as an obligation on the taxpayer but as a power to reassess by discretion. The first paragraph engages where income has been reduced because of a direct or indirect community of interest; the third directs that income be set as it would have been absent that community of interest. That is Norway's arm's length standard. Three conditions must be established before an adjustment stands: a community of interest, a reduction in Norwegian income, and causation between them. Read the statute as a benchmarking rule and you will miss where Norwegian cases are won. The second paragraph reverses the burden of proof where the counterparty sits outside the EEA.
The OECD Guidelines enter through the fourth paragraph, in force from 1 January 2008: where the arm's length principle applies under a treaty, the Guidelines shall be taken into account in deciding whether income has been reduced and in exercising the discretion. They are a statutorily mandated interpretive source rather than enacted law, applied dynamically to the current edition. Almost the whole substantive apparatus arrives that way: there is no domestic guidance on intangibles, intra-group services, financial transactions or cost contribution arrangements, and Chapters VI, VII, VIII and X do the work.
Related parties are defined twice over, and the two tests do different jobs. Section 13-1 itself turns on an undefined community of interest, wide enough to catch parent and subsidiary, sister companies and other economic affiliation. The compliance rules are bright-line: skatteforvaltningsloven § 8-11(4) fixes nærstående at direct or indirect ownership or control of at least 50 per cent, plus a specified circle of close family and the entities they in turn control at 50 per cent, and that definition governs the scope of both the controlled-transactions notice and the documentation duty. Dealings between a permanent establishment and the rest of its enterprise are brought in by § 8-11(5) together with skatteforvaltningsforskriften § 8-11-2, not by § 13-1.
The outer boundary of the provision was drawn in HR-2016-2165-A (IKEA): section 13-1 does not reach real equity dispositions lawfully made under company law, which belong to the anti-avoidance rule in section 13-2.
Methods, comparables and benchmarking
No method appears anywhere in Norwegian legislation. The five OECD methods apply through section 13-1 fourth paragraph under a most-appropriate-method rule with no hierarchy, subject to the Guidelines' preference for traditional transaction methods where the data supports them. Skatteetaten's guidance restructures the OECD nine-step process into two movements: identify the transaction, fix the year of analysis and delineate accurately; then build the comparable set, select the tested party, choose the method and price. That work belongs before or alongside the transaction, not after it.
There is a stated preference for the local market, Norwegian comparables first and then nearby countries, with pan-European searches not rejected out of hand. Skatteetaten is openly sceptical of commercial databases, which were not built for transfer pricing. The search must be open, verifiable, systematic and objective, and the file must record sources, criteria, every inclusion and exclusion, and any adjustments.
An arm's length range is accepted, and the interquartile range, though not mandatory, is used routinely on both sides: where comparability is high any point between the first and third quartiles is defensible, and where it is weaker Skatteetaten recommends the median. Secret comparables are lawful, since the authority may use any information it holds, but practice treats them as a last resort, with Total E&P Norge (Rt. 2015 s. 353) as the guidance point. Selecting the tested party is a named step with no published rule; in DHL the tax office reworked the taxpayer's gross-margin study on EBIT under TNMM. Norway does not apply Amount B but will respect the outcome where a covered jurisdiction does.
Documentation: what Skatteetaten expects
Two obligations must be kept apart. The first is the annual notice of controlled transactions and balances, filed by every business tax return filer unless both de minimis tests are met: transactions under NOK 10 million at fair value and intra-group balances at year end under NOK 25 million. Form RF-1123 is gone; it is now a theme inside the digital business tax return, due 31 May.
The second is the documentation, under skatteforvaltningsloven section 8-11 and chapter 8 of the regulation. It is prepared for each tax period, never filed, and produced within 45 days of request. The clock cannot start before the return deadline, so the file must in practice be complete by 31 May, and it is kept for ten years. Relief applies to groups with fewer than 250 employees and either revenue of NOK 400 million or less or a balance sheet total of NOK 350 million or less. Two carve-outs cut it back: documentation is still required for transactions and balances with related parties resident in a state from which Norway cannot obtain information on the counterparty's income or wealth position under an international agreement — an information-access test, not a low-tax test — and the exemption does not apply at all to enterprises taxed under petroleumsskatteloven section 5.
Norway does not mandate the BEPS Action 13 master file and local file. The prescribed content is a single itemised list in sections 8-11-4 to 8-11-12 covering group structure, three years of financials, the functional analysis, intangibles, method choice, comparability and the underlying agreements. Section 8-11-16 permits the EU Code of Conduct format instead, in Norwegian, Swedish, Danish or English.
The distinctive rule is section 8-11-15. A benchmarking study need not be in the pack when it is first produced; where the documentation contains none, the authority may require one afterwards, including a database search, and must allow 60 to 90 days. And where no internal comparables exist and external data would be disproportionately costly, the duty is satisfied without one, provided the company explains why and sets out the economic assessments behind the price charged.
Audits, penalties and the enforcement climate
Skatteetaten usually opens with an informal request for the documentation, which is not itself an audit. A formal audit notice changes the position: it triggers procedural rights and closes off self-correction. A notice of change follows, then a decision. Evidence created close in time to the transaction, the agency says, carries the greatest weight.
The scale is substantial. Measurable income adjustments were NOK 5,716 million across 19 decisions in 2025. Leasing and hire together with purchase and sale of goods made up 65 per cent of the 2025 total.
There is no bespoke documentation penalty. Failure to produce attracts a coercive daily fine of half a court fee, about NOK 673 in 2026, capped at roughly NOK 67,250. That is not the exposure that matters. Additional tax runs at 20 per cent of the tax advantage under section 14-3, reduced to 10 per cent where the information was also third-party reported. Aggravated additional tax of 20 or 40 per cent under section 14-6(3) then sits on top of that ordinary charge for intent or gross negligence, so the combined reaction is 40 per cent in the ordinary aggravated case and 60 per cent at the ceiling, which Skattedirektoratet reserves for grave, planned, well-organised or systematic evasion.
Protection is structural rather than formal. There is no documentation safe harbour; additional tax requires an information failure, so a taxpayer who has disclosed the transactions and given the authority the factual basis to form its own view should not be penalised even if the price is adjusted. Section 14-3(2) adds a defence where the taxpayer's conduct must be regarded as excusable. The defence has limits: Supreme Court authority treats a price departing substantially from arm's length as making the information itself incorrect. Appeals bite: of seven Tax Appeals Board decisions in 2025 the taxpayer won three, cutting additions by NOK 8,407 million.
Dispute resolution and advance certainty
A decision may be appealed to the tax office within six weeks; it may reverse, amend, or refer the case to the Tax Appeals Board, or the Petroleum Tax Appeals Board for petroleum cases. Court proceedings must be issued within six months, and can be postponed up to four years where a MAP is running.
Norway offers bilateral and multilateral APAs only. The terms are attractive: no monetary minimum, no fee, a five-year standard term negotiable either way, and rollback typically for three prior years where both states agree. Absent rollback the application must arrive by the end of the first fiscal year covered; completion is targeted at 24 to 30 months. The one unilateral analogue is narrow and sits outside the APA scheme: a binding ruling from the Oil Taxation Office on intra-group realisation of natural gas, under skatteforvaltningsloven section 6-1(2), with no right of appeal.
Take-up is low by Nordic standards and Skatteetaten says so itself: two APAs concluded in 2025, no new applications, twelve in force. Mutual agreement procedure performance is the stronger story. Average resolution across the 2019 to 2024 review period was 19.6 months against the 24-month standard, and of 22 cases closed in 2025, 18 were fully resolved and none ended without agreement. The third BEPS Action 14 peer review, approved in November 2025, found the minimum standards met bar some older treaties lacking an updated MAP article.
Downward corresponding adjustments outside a MAP are discretionary under section 12-1(2), weighed against conduct, elapsed time, the amount at stake and documentation quality, and capped by the five-year limit. A MAP agreement, by contrast, is implemented regardless of domestic time limits. Secondary adjustments have no statutory basis and are generally not made.
Pillar Two and what changes in 2026
The Supplementary Tax Act of 12 January 2024 brings the global minimum tax into Norwegian law. The domestic top-up tax and the income inclusion rule bite from financial years beginning after 31 December 2023, the undertaxed profits rule a year later.
Three filings can arise: the GloBE Information Return in XML, covering every jurisdiction the group operates in; a notification identifying the entity filing it for the Norwegian members; and a supplementary tax return in kroner, required only where top-up tax is payable. The GIR is due within 15 months of the parent's year end, extended to 18 in the first year, so the first Norwegian deadline for financial year 2024 is 30 June 2026. It must be filed even where no top-up tax arises.
The transfer pricing connection is direct: the transitional safe harbours and the GloBE effective rate both run off figures that transfer pricing determines, so an adjustment in one jurisdiction moves covered taxes and GloBE income in two. Elsewhere in 2026 MAP statistics move to the OECD reporting standard. Amount B remains open: no adoption and no published Ministry of Finance position.
How practitioners should respond
Build the file around the three statutory conditions, not around a benchmark. The state lost DHL in 2025 because it never identified a counterparty or a transaction and never compared controlled with uncontrolled dealings; a narrative about group benefit was no substitute. The same discipline protects taxpayers: name the transaction, name the counterparty, put the terms in writing. Written agreements are on Skatteetaten's own good-practice list, and contemporaneous material carries the greatest evidential weight.
Scope the compliance duty off the 50 per cent nærstående test in skatteforvaltningsloven section 8-11(4), not off a general sense of who is in the group, and check the information-access carve-out before relying on the small-enterprise exemption: a counterparty in a state Norway has no exchange route to keeps the documentation duty alive whatever the group's size.
Do the benchmarking anyway. The relief in section 8-11-15 is real, but a 60 to 90 day demand landing mid-audit is a poor moment to build one, and the disproportionate-cost route only works if the economic reasoning behind the price is substantive.
Treat petroleum and aquaculture as separate risk universes. Norm prices, a dedicated Oil Taxation Office and the carve-out letting it fully analyse service costs charged to special-taxed upstream companies cut across the general rules; aquaculture is a stated priority since the resource rent tax. On financing, PGNiG shows these disputes turn on method: debt capacity assessed standalone against risk-adjusted asset value, with subordination reflected in the rate.
Finally, consider a bilateral APA. It is free, runs five years, rolls back three, and Norway's competent authority is fast; low take-up is an opportunity, not a warning. Diarise 31 May for the notice and the country-by-country notification, 31 December for the report, 45 days for any documentation request, and 30 June 2026 for the first GloBE Information Return.
