Should I use an ENK or AS for my Norwegian business?

Choosing between an ENK and AS is one of the most important decisions for Norwegian business owners. The right answer depends primarily on your annual profit level, risk tolerance, and long-term plans.

What is an ENK?

An Enkeltpersonforetak (ENK) is a sole trader structure with no separate legal personality. There is no minimum capital, no registration fee, and the accounting rules are simpler. But all business income is your personal income — taxed immediately at personal income tax rates including trinnskatt (up to 17.6%) and the self-employed trygdeavgift rate of 11% (higher than the employee rate of 7.9%).

What is an AS?

An AS (Aksjeselskap) is a separate legal entity — a private limited company. It pays 22% corporate tax on its profits. You, as the owner-director, take income as either salary (with PAYE and payroll rules) or dividends (Aksjonærmodellen). The key tax advantage is that profits retained in the AS are only taxed at 22%, not at your personal rate.

Tax comparison at different profit levels

At NOK 300,000 annual profit: - ENK: personal income tax roughly 35–38% all-in (22% + trinnskatt + 11% trygdeavgift) = approximately NOK 105,000–114,000 tax - AS: 22% corporate tax on NOK 300,000 = NOK 66,000 + if you take it all as salary (equivalent to ENK): add PAYE. At this level, the AS tax saving is modest and the AS formation/running costs (regnskapsfører, OTP, A-melding, BRREG annual accounts) offset the saving.

At NOK 700,000 annual profit: - ENK: effective rate approximately 42–45% = NOK 294,000–315,000 tax - AS: you take NOK 500,000 as salary (market rate), pay trinnskatt on salary. Company retains NOK 200,000 at 22% = NOK 44,000 tax on retained portion vs approximately NOK 88,000–90,000 personal tax if taken as salary immediately. Saving: NOK 44,000–46,000 per year on retained portion alone.

At NOK 1,500,000 annual profit: - ENK: would face the highest trinnskatt brackets (16.6% and 17.6%) plus 11% trygdeavgift. Effective rate approximately 48–50% = approximately NOK 720,000–750,000 tax - AS: take NOK 600,000–700,000 salary, retain NOK 800,000–900,000 in company at 22% = NOK 176,000–198,000 corporate tax on retained portion vs NOK 380,000–430,000 personal tax if distributed immediately. Annual saving on retained portion: NOK 200,000+.

The crossover point

The conventional wisdom is that the ENK-to-AS crossover occurs at approximately NOK 500,000–700,000 in annual profit. Below this level, ENK administration savings outweigh the tax benefit. Above it, the tax deferral benefit typically justifies the extra complexity.

However, the answer also depends on: - Do you plan to reinvest profits in the business, or do you need all income for personal living costs? If you need it all immediately, AS offers less deferral advantage. - Do you have significant business liability risk? AS protects personal assets from business creditors. - Do you plan to raise investment or sell the business? Investors almost universally require an AS structure.

ENK advantages

• No minimum share capital
• No registration fee (free to register)
• No mandatory OTP pension until you hire employees
• No annual BRREG accounts filing
• No corporate tax return (only personal tax return)
• Simpler accounting (can use simplified ENK rules)
• No arbeidsgiveravgift on your own income (you pay personal trygdeavgift instead)

ENK disadvantages

• Unlimited personal liability
• Higher trygdeavgift rate: 11% (vs 7.9% as employee)
• All profits taxed immediately as personal income — no deferral option
• No Fritaksmetoden or Aksjonærmodellen advantages
• Harder to bring in investors or co-founders

Converting ENK to AS

An ENK can be converted to an AS tax-neutrally under Skatteloven § 11-20 (virksomhetsoverdragelse) as a business transfer, allowing the ENK owner to contribute the business to a new AS at book value without triggering immediate tax. This is typically done when the crossover point is reached.