No Income Tax

Norway Income Tax -- Self-Employed Skill v2.0

General reference only. This skill is general tax/accounting reference material for AI-assisted workflows. It has not been reviewed for any specific person's facts, documents, elections, deadlines, residency, filing status, or local procedures. Do not rely on it to file, pay, amend, or take a tax position without review by a qualified professional in the relevant jurisdiction.

Section 1 -- Quick Reference

Alminnelig Inntekt (General Income Tax)

Trinnskatt Brackets (2025)

Trinnskatt applies to personinntekt (NOT alminnelig inntekt).

Trygdeavgift (National Insurance)

Lower threshold: ~NOK 69,650.

Key Form

Conservative Defaults

Section 2 -- Required Inputs and Refusal Catalogue

Required Inputs

Minimum viable -- bank statement for the full tax year, confirmation of business form (enkeltpersonforetak).

Recommended -- all invoices, prior year skattemelding, asset register, forskuddsskatt payment records.

Ideal -- complete naeringsoppgave from prior year, balance sheet (for skjermingsfradrag), documented mileage log if vehicle claimed.

Refusal if minimum is missing -- SOFT WARN. No bank statement = hard stop.

Refusal Catalogue

R-NO-1 -- Companies (AS, ASA). "This skill covers enkeltpersonforetak only. Aksjeselskap files separate return. Out of scope."

R-NO-2 -- International income / permanent establishment. "Cross-border income requires specialist analysis. Escalate."

R-NO-3 -- Complex restructuring. "Business restructuring (omdanning) requires specialist advice. Escalate."

R-NO-4 -- Petroleum tax. "Petroleum taxation is out of scope."

Section 3 -- Transaction Pattern Library

This is the deterministic pre-classifier. When a bank statement transaction matches a pattern below, apply the treatment directly. If none match, fall through to Tier 1 rules in Section 5.

3.1 Income Patterns (Credits)

3.2 Expense Patterns (Debits) -- Fully Deductible

3.3 Expense Patterns -- Travel

3.4 Expense Patterns -- Partially Deductible

3.5 Expense Patterns -- NOT Deductible

3.6 Capital Items (Saldogrupper)

3.7 Exclusions

3.8 Norwegian Banks -- Statement Format Reference

Section 4 -- Worked Examples

Example 1 -- Client Payment (MVA-registered)

Input line: 15/03/2025 ; DNB Innbetaling ; DESIGN STUDIO AS ; Faktura 2025-003 ; +125,000.00 ; NOK

Reasoning: Client payment. If MVA-registered (25%), NOK 125,000 includes MVA. Net = NOK 100,000 (revenue) + NOK 25,000 MVA (excluded).

Classification: Driftsinntekt = NOK 100,000. MVA NOK 25,000 excluded.

Example 2 -- Representation (Limited)

Input line: 22/04/2025 ; SpareBank 1 Kort ; RESTAURANT MAAEMO ; Kundelunsj ; -2,500.00 ; NOK

Reasoning: Representation. Deductible up to NOK 559 per person per event. If 4 persons: max NOK 559 x 4 = NOK 2,236. NOK 264 not deductible. Must document attendees and business purpose.

Classification: Deductible up to NOK 559/person limit. Flag for reviewer.

Example 3 -- Equipment (Saldogruppe)

Input line: 03/06/2025 ; DNB Kort ; ELKJOP ; LAPTOP ; -18,000.00 ; NOK

Reasoning: Laptop NOK 18,000. Over NOK 15,000 and life over 3 years. Saldogruppe a (office machines, 30%). Year 1: NOK 18,000 x 30% = NOK 5,400.

Classification: Saldogruppe a. Depreciation NOK 5,400. NOT direct expense.

Example 4 -- Low-Value Asset (Immediate)

Input line: 15/05/2025 ; Nordea Kort ; CLAS OHLSON ; KONTORSTOL ; -4,500.00 ; NOK

Reasoning: Office chair NOK 4,500. Under NOK 15,000 threshold. Immediate full deduction.

Classification: Driftskostnad. Fully deductible.

Example 5 -- Minstefradrag Error

Input line: Client claims minstefradrag NOK 104,450 on naeringsinntekt NOK 500,000.

Reasoning: INCORRECT. Minstefradrag does NOT apply to naeringsinntekt -- only to lonnsinntekt. Self-employed must deduct actual documented expenses.

Classification: REJECT minstefradrag. Use actual expenses only.

Example 6 -- Loss Carry-Forward

Input line: Prior year loss NOK 150,000. Current year naeringsinntekt NOK 400,000.

Reasoning: Underskudd (losses) carry forward with no time limit. Reduces alminnelig inntekt. But trinnskatt and trygdeavgift based on personinntekt (NOK 400,000) -- loss does NOT reduce personinntekt.

Classification: Alminnelig inntekt base = NOK 400,000 - NOK 150,000 = NOK 250,000. Trinnskatt/trygdeavgift on NOK 400,000.

Section 5 -- Tier 1 Rules (When Data Is Clear)

5.1 Naeringsinntekt Computation

Gross revenue minus cost of sales minus operating expenses minus depreciation = naeringsinntekt. Skjermingsfradrag then reduces personinntekt (T2).

5.2 Alminnelig Inntekt

22% flat on net income (all sources minus all deductions minus personfradrag NOK 108,550). Applies to both personal and capital income.

5.3 Trinnskatt

Applies to personinntekt (gross personal income less skjermingsfradrag), NOT alminnelig inntekt. Cumulative brackets.

5.4 Trygdeavgift

11.0% on personinntekt from naeringsinntekt. Lower threshold ~NOK 69,650.

5.5 Minstefradrag -- NOT for Self-Employed

Minstefradrag applies ONLY to lonnsinntekt. Self-employed must deduct actual documented expenses.

5.6 Depreciation (Saldogrupper)

Declining balance on pool. Low-value under NOK 15,000 or life under 3 years: immediate.

5.7 Non-Deductible

5.8 Forskuddsskatt (Preliminary Tax)

4 quarterly instalments: 15 March, 15 June, 15 September, 15 December. Based on expected income. Adjustable via skatteetaten.no.

5.9 Filing Deadlines and Penalties

5.10 MVA Interaction

5.11 RF-1175 Threshold

Gross revenue over NOK 50,000: must file naeringsoppgave. At or below: exempt.

5.12 Loss Carry-Forward

Underskudd carries forward with no time limit. Reduces alminnelig inntekt but NOT personinntekt.

Section 6 -- Tier 2 Catalogue (Reviewer Judgement Required)

6.1 Skjermingsfradrag (Shielding Deduction)

Shields risk-free return on business capital from trinnskatt/trygdeavgift. Net positive business assets x skjermingsrente. Reduces personinntekt. Flag for reviewer -- requires accurate balance sheet.

6.2 Home Office

• Dedicated room exclusively for business: proportional actual costs
• Standard deduction: NOK 2,050/year (2025) as alternative
• Dual-use room: standard deduction only
• Flag for reviewer

6.3 Vehicle Business Use

• Standard rate: NOK 3.50/km for business trips
• Or actual costs with logbook
• Flag for reviewer

6.4 Phone / Internet

Business portion only. Default 0%.

6.5 First Year Forskuddsskatt

New self-employed must estimate and register via skatteetaten.no. If not registered, SKAT sets at NOK 0 -- underpayment interest applies.

Section 7 -- Excel Working Paper Template

NORWAY INCOME TAX -- WORKING PAPER
Tax Year: 2025
Client: ___________________________
Business Form: Enkeltpersonforetak

A. DRIFTSINNTEKTER (net of MVA)
  A1. Omsetning                                    ___________
  A2. Andre inntekter                              ___________
  A3. Total                                        ___________

B. DRIFTSKOSTNADER
  B1. Lokalekostnader                              ___________
  B2. Forsikring                                   ___________
  B3. Revisor / regnskapsfører                     ___________
  B4. IT / software                                ___________
  B5. Markedsføring                                ___________
  B6. Reisekostnader                               ___________
  B7. Bilkostnader (business %)                    ___________
  B8. Representasjon (NOK 559/person limit)        ___________
  B9. Avskrivninger (saldogrupper)                 ___________
  B10. Bankkostnader                               ___________
  B11. Øvrige kostnader                            ___________
  B12. Total                                       ___________

C. NÆRINGSINNTEKT (A3 - B12)                       ___________

D. TAX COMPUTATION
  D1. Alminnelig inntekt (C - personfradrag)       ___________
  D2. x 22%                                        ___________
  D3. Trinnskatt (on personinntekt)                ___________
  D4. Trygdeavgift (11.0% on personinntekt)       ___________
  D5. Total tax                                    ___________
  D6. Less: Forskuddsskatt paid                    ___________
  D7. Restskatt / tilgode                          ___________

E. RF-1175 REQUIRED? (gross > NOK 50,000)          Yes / No

REVIEWER FLAGS:
  [ ] Business form confirmed?
  [ ] Minstefradrag NOT applied to næringsinntekt?
  [ ] Trinnskatt on personinntekt (not alminnelig)?
  [ ] Trygdeavgift at 11.0% (not 7.9%)?
  [ ] Vehicle method confirmed?
  [ ] Home office arrangement confirmed?
  [ ] Items over NOK 15,000 in saldogrupper?
  [ ] Loss carry-forward correctly applied?

Section 8 -- Bank Statement Reading Guide

Norwegian Bank Statement Formats

Key Norwegian Banking Terms

Section 9 -- Onboarding Fallback

ONBOARDING QUESTIONS -- NORWAY INCOME TAX
1. Business form: enkeltpersonforetak?
2. Gross revenue (for RF-1175 threshold)?
3. Home office: dedicated room or shared? Standard deduction or actual?
4. Vehicle: standard NOK 3.50/km or actual costs?
5. Phone/internet: business use %?
6. Capital assets purchased during year? Cost and type?
7. Forskuddsskatt paid? Amounts per quarter?
8. Other income (employment, capital, rental)?
9. Prior year losses (underskudd) to carry forward?
10. Prior year skattemelding available?

Section 10 -- Reference Material

Key Legislation

Test Suite

Test 1 -- Mid-range income. Input: Enkeltpersonforetak, gross NOK 800,000, expenses NOK 200,000. Expected: Næringsinntekt NOK 600,000. Alminnelig = (600,000 - 108,550) x 22%. Trinnskatt spans Trinn 1-2. Trygdeavgift 11.0%.

Test 2 -- High income, upper trinnskatt. Input: Næringsinntekt NOK 1,200,000. Expected: Trinnskatt through Trinn 4.

Test 3 -- Below trinnskatt threshold. Input: Næringsinntekt NOK 200,000. Expected: No trinnskatt. Only alminnelig + trygdeavgift.

Test 4 -- Minstefradrag rejected. Input: Client claims minstefradrag on næringsinntekt. Expected: REJECT. Actual expenses only.

Test 5 -- Capital item in saldogruppe. Input: Laptop NOK 25,000. Expected: Saldogruppe a, 30% = NOK 7,500.

Test 6 -- Loss carry-forward. Input: Prior loss NOK 150,000, current NOK 400,000. Expected: Alminnelig base NOK 250,000. Trinnskatt/trygdeavgift on NOK 400,000.

PROHIBITIONS

• NEVER apply minstefradrag to naeringsinntekt
• NEVER apply trinnskatt to alminnelig inntekt -- it applies to personinntekt
• NEVER use 7.9% trygdeavgift for naeringsinntekt -- correct rate is 11.0%
• NEVER include MVA in taxable revenue
• NEVER allow capital items over NOK 15,000 (life 3+ years) as direct expense
• NEVER deduct income tax or trygdeavgift as business expense
• NEVER allow education for new profession as deduction
• NEVER ignore personfradrag NOK 108,550
• NEVER present calculations as definitive

Disclaimer

This skill and its outputs are provided for informational and computational purposes only and do not constitute tax, legal, or financial advice. Open Accountants and its contributors accept no liability for any errors, omissions, or outcomes arising from the use of this skill. All outputs must be reviewed and signed off by a qualified professional (such as a statsautorisert revisor, registrert revisor, or equivalent licensed practitioner in Norway) before filing or acting upon.

The most up-to-date, verified version of this skill is maintained at openaccountants.com. Log in to access the latest version, request a professional review from a licensed accountant, and track updates as tax law changes.

Source: OpenAccountants — open tax Guides for AI, reviewed by named CPAs/CAs/EAs. Quality: source-cited draft. For always-current figures and named-accountant backing, connect the OpenAccountants MCP server (openaccountants-mcp).