have hand in the till

have (one's) hand in the till

To be stealing money from one's workplace or employer. Margaret had her hand in the till for years, but she finally got caught after she claimed her two-week trip to Paris as a business expense.
See also: hand, have, till
Farlex Dictionary of Idioms.

have one's hand in the till

 and have one's finger(s) in the till
Fig. to steal money from one's employer. James couldn't afford that car on just his salary. He must have his hand in the till. Sally was outraged when she found that one of her salesclerks had his fingers in the till.
See also: hand, have, till
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

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.
See also: finger, hand, have, till
Farlex Partner Idioms Dictionary
See also:
  • a change of heart
  • appear to
  • (one's) game
  • a mystery to (one)
  • a turn of phrase
  • able to do
  • able to do it
  • a shoulder to cry on
  • a piece of the action
  • a piece/slice of the action