Internal Revenue Service

The Internal Revenue Service (IRS) is the revenue service of the United States federal government. The government agency is a bureau of the Department of the Treasury, and is under the immediate direction of the Commissioner of Internal Revenue. The IRS is responsible for collecting taxes and the administration of the Internal Revenue Code.

Scooby-Doo! Moon Monster Madness
listed the IRS as one of the things he was afraid of when Shaggy Rogers asked.