Denmark’s tax on nitrogen oxide emissions, which was raised during the financial crisis, could be scrapped if it’s proven to have a negative impact on jobs and competitiveness.
The centre-left Danish government, which was formed in October 2011, decided at the end of that year to raise the tax from 5 to 25 Danish crowns (from €0.7 to 3.4) per kilo of nitrogen oxide NOx emissions. The tax was introduced on 1 July 2012.

The increased NOx tax was adopted after long debates in the Danish parliament where opposition parties warned it would be expensive not only for companies emitting NOx, but for all businesses.