The individuals were arrested by Gardai attached to the Divisional Fraud Investigation Unit, assisted by Divisional Drug Unit and CAB.
An investigation into an ongoing operation into money laundering in Cork city resulted in the arrests, authorities said.
Five women and two men, aged between 20 and 51, were arrested in the Cork city area.
They have been charged and are due to appear at Cork District Court this morning.
The arrests come after a raid at a premise on Kerryhall Rd, Fairhil in March.
During the search, Gardai discovered and seized €36,000 in cash. There were no arrests at the time.
The arrests are part of a long-running investigation into drugs and money-laundering in the city.