Signs of creeping disquiet among Norway’s rural municipalities have emerged following the Norwegian government’s plan to implement a new 40 percent tax on the country's salmon producers.

The proposed tax, which must still be approved by the Norwegian Parliament, is set to take effect beginning in 2023 and will be applied to farmers with production volumes above 4,000 or 5,000 metric tons.

In theory, the levy would see salmon producers paying more to compensate for the environmental cost of their activity.