A person need only obtain one BTR certificate regardless of the number of licenses or permits held with the department. It is very important that licensees file their reports timely and pay any amount owing. The fee is also payable by anyone who uses or possesses petroleum products in Wisconsin subject to the fee but on which the fee has not been paid - ss. The department must be notified of wholesale distributors who make delayed payments. The petroleum inspection fee is due 15 days after the close of the month - ss.
All reports are due on the last day of the month following the month covered by the report - ss.
For example, a report for October is due November 30. There are no extensions of time granted if you are unable to file a report and pay any amount owing by the due date. Vendors must keep records documenting exempt sales. Refund claims must be filed within four years from the date fuel is purchased. Persons who purchase more than 1 million gallons of aviation fuel in Wisconsin during a month can apply for a petroleum inspection fee refund of 2 for each gallon purchased in excess of 1 million gallons during the month.