U.S. Federal Jurisdictions:
This page: The Internal Revenue Service Criminal Investigations Division (IRS-CID)
When and how to contact
The Internal Revenue Service Criminal Investigations Division (IRS-CID)
"... Since the inception of IRS Criminal Investigation, our mission has been to follow the money. And almost from the inception, the question of "Why is IRS involved?" has been asked. The fact is, no matter what the source, all income earned, both legal and illegal, has the potential of becoming involved in crimes which fall within the investigative jurisdiction of IRS CI. It is the objective of CI to utilize the broad authority of Title 26 and 31, tax, currency reporting and forfeiture and Title 18 money laundering, conspiracy and forfeiture to identify, investigate and prosecute the most significant tax, currency and money laundering offenders; and to pursue the assets of those offenders both domestically and internationally for criminal tax and asset forfeiture purposes. ..." http://www.treas.gov/irs/ci/docfinancialcrimes.htm
When to contact the IRS-CID:
When you have knowledge or evidence of:
How to contact the IRS Criminal Investigations Division:
If you are calling in a tip that you suspect someone of a violation, before you call write down what you want to say or make some of notes so you remember everything you want to report. There are few things more frustrating than remembering information you wanted to hand over after you've hung up the phone.
If you are calling in with direct, personal knowledge and experience, as always, have your narrative and evidence package ready.
The IRS Criminal Investigations Division is open to calls from non-US residents (citizen residents of foreign countries) who want to report U.S.-based criminal activity or crimes perpetrated by US citizens living abroad.
The U.S. Attorney's Office The Internal Revenue Service Criminal Investigations Division (IRS-CID)