Idioms based on money. Select an idiom for more details. Also try Money Idioms Quiz.
Your bread and butter is your livelihood or the source of your income.
If you give a ballpark figure or a ballpark estimate, you give a number which you think is fairly close to the actual one.
If you have a nest egg, you have money put away for the future.
If you have a vested interest in something, you have a strong personal interest in it because you stand to gain from it.
If someone cooks the books, or cooks the accounts, they keep inaccurate accounts for a business, usually in order to pay less tax.
If something costs the earth, or they charge the earth for it, it's very expensive.
You can say a person or an organisation has deep pockets if they have lots of money.
You can say something is dirt cheap if it costs very little money.
You can say "easy come, easy go" to express the idea that if something comes to someone easily, such as money they get without working hard for it, they can lose it just as easily and it won't matter to them much.
You can say "easy money" to describe money that someone gets without having to make much effort.
If you feather your own nest, you use your position or your job illegally for personal gain.
If you are feeling the pinch, you're finding it harder to survive on your income.
You can say "for my money" to mean the same as "in my opinion".
If a company goes out of business, it stops trading and closes down.
If you grease someone's palm, you pay them a bribe.
If a person or a company is in the black, their assets are greater than their debts.
If a person or a company is in the red, their debts are greater than their assets.
If you kill the goose that lays the golden egg, you destroy something that has made you a lot of money.
If you are made of money, you have lots of money.
If you make a killing, you make a lot of money from a sale or a deal of some sort.
If you make ends meet, you earn just enough to pay for a place to live and your daily expenses.
You pay the price for doing something when you experience the unpleasant results of doing it.
If you pay through the nose for something, you pay more than the usual price for it.
If you pick up the tab, or pick up the bill, you pay for yourself and your friends in a restaurant or a bar.
If you go from rags to riches, you start out very poor and you become very rich.
If you talk turkey, you discuss something seriously, usually to do with business or money.
If you tighten your belt, you try to spend less money.
If something is done under the table, it's done secretly, usually because it's illegal or unethical.
If you're wheeling and dealing, you're involved in the complex world of making deals and exchanging favours in business or politics, or both.
If something is worth its weight in gold, it's extremely valuable or extremely useful.