There are many illegal tax avoidance schemes, which are typically promoted with the promise of reducing or eliminating income and other types of taxes. If the promotion sounds too good to be true, it may be an illegal tax avoidance scheme. Publication 3995, Is It Too Good To Be True? Recognizing Illegal Tax Avoidance Schemes PDF is a trifold brochure used by tax practitioners, taxpayers and IRS employees as part of a communication effort regarding unlawful tax avoidance schemes. The Pub. 3995 trifold brochure (catalog number 33989Q) is electronic only and is no longer available in print.