dig/dip into (your) pocket

to use your own money to pay for something.

Parents of young children have to dig deep into their pockets at Christmas-time.

• to all intents and purposes
• to a man
• to and fro
• toast of
• toast of somewhere
• to a tee
• to begin with
• to be on the safe side
• to be said for
• to be said for doing something
• to be said for something
• to be sneezed at
• to be sniffed at
• to boot
• to call own
• to call your own
• to cap it all
• to coin a phrase
• to credit
• to crown it all
• to cut a long story short
• to date
• to death
• to die for
• to each own