Have one's fingers in the till - Idioms by The Free Dictionary
have (one's) fingers in the till (redirected from have one's fingers in the till)
have (one's) fingers in the till
To be stealing money from one's workplace or employer. Margaret has had her fingers in the till for years, but she finally got caught when her secret account was discovered.
have (or with) your fingers (or hand) in the till stealing from your employer. Compare with with your hand in the cookie jar (at cookie).
have your ˌfingers/ˌhand in the ˈtill (British English, informal) steal, especially small amounts of money from a shop/store, business, etc. where you work: He lost his job after they found he’d had his hand in the till.