What is Arbeidsgiveravgift (Employer Payroll Tax)?
Norwegian employer's social security contribution. National rate 14.1% on gross wages. Significantly reduced rates in northern and remote regions (zone 1a to zone 5) designed to encourage employment in less-populated areas. Paid by the employer, not the employee.
Current Rate (Inntektsår 2025)
14.1% (Zone 1, most of Norway); reduced rates down to 0% in Zone 5 (northernmost areas)
Example
Oslo employer pays an employee NOK 600,000 gross salary. Arbeidsgiveravgift: 14.1% × NOK 600,000 = NOK 84,600. Total employment cost: NOK 684,600 plus mandatory pension (min 2%). A Tromsø employer in zone 2a pays 10.6% — a saving of NOK 20,400 for the same employee.
How Arbeidsgiveravgift (Employer Payroll Tax) works in Norway
Arbeidsgiveravgift is the Norwegian employer's social security contribution — equivalent to the employer's National Insurance in the UK, or the employer's FICA contribution in the US. It is paid by the employer on top of the employee's gross wage and is deductible as a business expense.
**Zone rates (2025)**
Norway uses a differential zone system to incentivise business activity and employment in less-populated regions:
- **Zone 1** (most municipalities): 14.1% — Oslo, Bergen, Stavanger, Trondheim and most of southern and central Norway - **Zone 1a** (financial sector in any zone): 14.1% (financial sector cannot use reduced rates) - **Zone 2**: 10.6% — parts of northern Norway and some mountain municipalities - **Zone 3**: 6.4% — further north - **Zone 4**: 5.1% — most of Finnmark county and northern Troms - **Zone 5**: 0% — selected municipalities in Finnmark/North Troms eligible for full exemption
The municipality code (kommunenummer) of the employer's registered location determines the rate. Businesses can look up their zone at Skatteetaten.no.
**Calculation and payment**
Arbeidsgiveravgift is calculated on gross wages including benefits in kind (naturalytelser) and is reported monthly via the A-melding (payroll reporting system, filed by the 5th of each month). Payment is made bimonthly — the January-February liability is due by 10 March, and so on for 6 payment dates per year.
**What is included in the base?**
Practically all employee remuneration is included: - Gross wages and overtime - Holiday pay (feriepenger) - Benefits in kind (company car, electronic devices at home, etc.) - Sick pay top-ups paid by employer - Employer pension contributions
The arbeidsgiveravgift is calculated on the gross amount before deducting employee tax or pension contributions.
**Special rules**
Agricultural and forestry businesses have a separate reduced rate. Certain non-profit organisations have partial exemptions. The reduced zone rates are subject to EU/EEA state aid rules and are reviewed periodically; the current scheme runs to 2028.
Related terms
Norwegian personal income tax system. Flat 22% ordinary income tax on net income, plus trinnskatt (bracket tax) on gross income up to 17.6%, plus 7.9% trygdeavgift (national insurance) on earned income. Total marginal rate on highest earners can exceed 47%.
Norway's national tax authority. Manages all Norwegian taxes including personal income tax, corporate tax, MVA (VAT), wealth tax, and inheritance tax. Digital services via skatteetaten.no. Business filings use Altinn.no portal.
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