
Money and tax5 min read
Advance tax for sole proprietorships: deadlines in 2026
How to calculate, change and pay advance tax for a sole proprietorship. See the four deadlines and what happens if you pay late.
Hlib Suslov
Topics: 3

How to calculate, change and pay advance tax for a sole proprietorship. See the four deadlines and what happens if you pay late.

How to file a claim correctly: the one-year deadline that kills your right to compensation, when a small claim doesn't pay off, and your free right to appeal when the company says no.

Your first tax year in Norway: your employer deducts tax, remaining tax is due 20 August 2026, and amounts under 100 kroner are never collected. See deadlines and KID.