PHOENIX - - The Internal Revenue Service (IRS) today said using abusive tax shelters and structures to avoid paying taxes continues to be a problem and remains on its annual list of tax scams known as the "Dirty Dozen" for the 2015 filing season.

"The IRS is committed to stopping complex tax avoidance schemes and the people who create and sell them," said IRS Commissioner John Koskinen. "The vast majority of taxpayers pay their fair share, and we are warning everyone to watch out for people peddling tax shelters that sound too good to be true."

Compiled annually, the "Dirty Dozen" lists a variety of common scams that taxpayers may encounter anytime but many of these schemes peak during filing season as people prepare their returns or hire people to help with their taxes.

Illegal scams can lead to significant penalties and interest and possible criminal prosecution. IRS Criminal Investigation works closely with the Department of Justice (DOJ) to shutdown scams and prosecute the criminals behind them.

Abusive Tax Structures
Abusive tax schemes have evolved from simple structuring of abusive domestic and foreign trust arrangements into sophisticated strategies that take advantage of the financial secrecy laws of some foreign jurisdictions and the availability of credit/debit cards issued from offshore financial institutions.

IRS Criminal Investigation (CI) has developed a nationally coordinated program to combat these abusive tax schemes. CI's primary focus is on the identification and investigation of the tax scheme promoters as well as those who play a substantial or integral role in facilitating, aiding, assisting, or furthering the abusive tax scheme, such as accountants or lawyers. Just as important is the investigation of investors who knowingly participate in abusive tax schemes.

What is an abusive scheme? The Abusive Tax Schemes program encompasses violations of the Internal Revenue Code (IRC) and related statutes where multiple flow-through entities are used as an integral part of the taxpayer's scheme to evade taxes. These schemes are characterized by the use of Limited Liability Companies (LLCs), Limited Liability Partnerships (LLPs), International Business Companies (IBCs), foreign financial accounts, offshore credit/debit cards and other similar instruments. The schemes are usually complex involving multi-layer transactions for the purpose of concealing the true nature and ownership of the taxable income and/or assets.

Whether something is "too good to be true" is important to consider before buying into any arrangements that promise to "eliminate" or "substantially reduce" your tax liability. If an arrangement uses unnecessary steps or a form that does not match its substance, then that arrangement is an abusive scheme. Another thing to remember is that the promoters of abusive tax schemes often employ financial instruments in their schemes; however, the instruments are used for improper purposes including the facilitation of tax evasion.

The IRS encourages taxpayers to report unlawful tax evasion. Where Do You Report Suspected Tax Fraud Activity? ( http://www.irs.gov/Individuals/How-Do-You-Report-Suspected-Tax-Fraud-Activity%3F