Salmon faming giant Cermaq said Norway's new ground tax rules effectively puts the company back under government control, in the latest scathing response to the new regime.

The new tax, which took effect Jan. 1, remains a topic of sharp debate across the industry and government, with questions continuing to swirl over what tax rates companies will effectively pay.

The Norwegian Parliament, the Storting, has sought submissions on the proposal, which has seen several companies harshly criticize the tax.

The Norwegian government sold its stake in Cermaq to Japanese giant Mitsubishi in 2014 for NOK 9 billion (€840 million/$890 million).