The Act also permits private citizens (called "relators") to file suit on behalf of the Government and receive a share of the Government's recovery in return for their efforts. These suits are called "qui tam" actions, which comes from the Latin phrase "qui tam pro domino rege quam pro se ipso in hac parte sequitur," which refers to those "who sue on behalf of the king as well as themselves."
Similar statutes are now also in effect in numerous states and some cities. Since 1986, when the False Claims Act was amended to make filing a "qui tam" action easier, private citizens have collected hundreds of millions of dollars in such suits while simultaneously assisting in the prosecution and deterrence of fraud against the United States.
Note: Tax evasion is not covered by the False Claims Act. See www.taxwhistleblowers.org for information concerning the rewards available for reporting underpayments of tax.