No, it is not illegal. That is what they do when they find, or suspect, that you have maxed out your credit card.
Credit limit is the largest amount of money a consumer can charge on a credit card. The amount equals the amount of credit extended to a consumer. Charges over this amount are usually allowed, but expect to pay an "over-the-limit" fee.
It will depend on how much your credit limit is. For example, if your credit card limit is $500, a two percent purchase on your credit card would be $10.00
Credit Limit
your credit limit
Credit cards are open ended accounts. The issuing bank has a limit as to how much can be borrowed against the account. The top amount is the credit limit.
Credit Limit
Assuming you mean as a customer - that's called your credit limit.
unused credit
Credit is the power to obtain goods and services in exchange for a promise to pay for them later while credit volume is the amount or in some other cases the maximum amount that an individual is able to obtain. For example, a person who has a credit card with a credit limit of 50,000 will not be able to use the card for credit purchase higher than 50,000. Thus, ten persons with a credit card limit each of 50,000 will have an aggregate credit of 500,000.
amount depends on your credit score and the amount of equity you have in your home.
you should only utilize 35% of your credit line
it is the maximum amount of money you can spend on a credit card, and it is all based on your credit rating and income.