Use the DR 0021D to calculate the amount of Colorado severance tax to enter on line 1 of the DR 0021. Based on your accounting method (cash or accrual basis), use the amounts listed on the DR 0021W you received to complete DR 0021D. If you disagree with the information provided by a producer/first purchaser, you must request a corrected DR 0021W prior to completing the DR0021D. Round all amounts to whole dollars.