27 CFR § 46.222 - Determination of amount of tax due.

After the dealer has taken the inventory, the dealer must convert the inventory quantities to taxable units using the table below. For tobacco products, round the quantities to two decimal places. The dealer must then apply the applicable tax rate for each type of taxable article using the table in § 46.221 to determine the amount of tax due.

Product	Computation
Small cigars weighing not more than 3 pounds thousand	Divide number of cigars by 1,000 and multiply by the small cigar tax rate.
Small cigarettes weighing not more than 3 pounds thousand	Divide number of cigarettes by 1,000 and multiply by the small cigarette tax rate.
Large cigarettes weighing more than 3 pounds thousand, measuring 6 1/2″ or less in length	Divide number of cigarettes by 1,000 and multiply by the large cigarette tax rate.
Large cigarettes weighing more than 3 pounds thousand, measuring more than 6 1/2″ in length	Mathematically adjust the number of large cigarettes using the instructions below.* Divide the adjusted number of large cigarettes by 1,000 and multiply by the small cigarette tax rate.
Snuff	Multiply the total in pounds by the snuff tax rate.
Chewing tobacco	Multiply the total in pounds by the chewing tobacco tax rate.
Pipe tobacco	Multiply the total in pounds by the pipe tobacco tax rate.
Roll-your-own	Multiply the total in pounds by the roll-your-own tax rate.
Cigarette papers 6 1/2″ or less in length	Divide the number of cigarette papers by 50, add 1 if there is a remainder, and multiply that number by the cigarette paper tax rate.
Cigarette papers more than 6 1/2″ in length	Mathematically adjust the number of cigarette papers using the instructions below.* Divide the adjusted number of cigarette papers by 50, add 1 if there is a remainder, and multiply that number by the cigarette paper tax rate.
Cigarette tubes 6 1/2″ or less in length	Divide the number of cigarette tubes by 50, add 1 if there is a remainder, and multiply that number by the cigarette tube tax rate.
Cigarette tubes more than 6 1/2″ in length	Mathematically adjust the number of cigarette tubes using the instructions below.* Divide the adjusted number of cigarette tubes by 50, add 1 if there is a remainder, and multiply that number by the cigarette tube tax rate.

*Large cigarettes, cigarette papers, and cigarette tubes more than 6 1/2 inch in length are counted as multiple units. Each 2 3/4 inch or fraction of the length is counted as a separate taxable unit. For each different length of product in this category, divide the length by 2 3/4 inch and add 1 to the result if there is a remainder. Multiply the number of cigarettes, cigarette papers, or tubes of that length by the resulting number.