Contact the authorities. Either contact the police, the Treasury suggests, or your local U.S.Take mental notes. The Treasury suggests, if you can do it safely, “observe the passer's description – and their companions' descriptions – and write down their vehicle license plate numbers if you can.” The police will likely want to talk to that person.
Besides, what if you’re wrong about the person who gave you the fake cash? This might be a completely innocent and unsuspecting consumer who doesn’t know the bill is counterfeit. Don’t say anything that would put you in danger. For instance, yelling at the person who handed you the bill wouldn’t be smart if that person is prone to violence.
