An operator's minimum mining tax is calculated on the mine-mouth output value for all of the operator's mines.

The following allowances can be deducted from the mine-mouth output value:

• the depreciation allowance (in respect of class 1A, class 2A, class 3A and class 4A property)
• the processing allowance

Rate of the minimum mining tax

The rate of the minimum mining tax is:

• 1% for the portion of the mine-mouth output value that does not exceed the $80 million threshold
• 4% for the portion of the mine-mouth output value that exceeds the $80 million threshold

Associated operators

If the operator is associated with other operators, it must enclose form IM-30.EN-V, Agreement Between Associated Operators Regarding the Mining Tax, with its return. The agreement defines how the associated operators will allocate the limits related to the additional depreciation allowance and minimum mining tax threshold.