Money 1
Money 2
Money 3
100

Bread and butter

Someone’s main source of income.

100

On the house

free of charge (at a restaurant for example)

100

Rip off

Charge an exaggerated quantity of money for something.

200

Chip in

Contribute some money with other people. 

200

Costs an arm and a leg

Very expensive.

200

Pitch in

Help with most of the money for something or invite someone.

300

Pay back

Return money that you owe.

300

To have sticky fingers

To be a shoplifter or thief.

300

Bring home the bacon

Earn a salary.

400

tighten one's belt

spend money more carefully because there is less

400

money laundering

conceal (hide) the source of illegally-obtained money so that it looks legitimate.

400

find it hard to make ends meet

find it difficult to pay for your everyday needs because you have very little money

500

born with a silver spoon in one's mouth

born into a rich family and have a high social position

500

Cash cow

a product or service that makes a lot of money over a long period of time for the company that sells it

500

Foot the bill

Pay all debts and services like water or gas.