Work out how large a deduction you can claim on your Norwegian tax return for commuting between home and work, based on distance and number of workdays per year.
First the total distance driven for the year is calculated, then it's multiplied by the per-km rate. Finally the floor deduction is subtracted, and the deduction is capped at an upper limit:
With 25 km one way and 230 workdays, the total distance driven is 11,500 km, the base is 21,850 kr, and the deduction after the floor is 21,850 − 12,000 = 9,850 kr.
The floor deduction is an amount you must commute for before the deduction starts counting. Only the part of the calculated base that exceeds the floor deduction is given as a deduction on your tax return.
Yes, the commute deduction is calculated from distance regardless of whether you drive, cycle, walk or use public transport. There are, however, some special rules for long distances and use of flights or ferries.
The Norwegian tax authority (Skatteetaten) often doesn't pre-fill the commute deduction automatically. You usually have to enter it yourself on your tax return, based on the actual distance and number of commute days through the year.