Share your insights or perspective on the financial matter presented in the input.

When should I open a “Line of credit” at my bank?
There are two basic types of lines of credit typically offered at a retail bank: Overdraft line of credit is essentially a revolving personal loan that you can draw upon as needed or automatically draw on when you overdraw on your checking account. Typically with a commercial bank there is a fee to use the automatic overdraft in addition to interest. Some credit unions don't charge a fee. Interest is typically computed using average daily balance. A Home equity line of credit is a revolving loan that is secured against your home. Interest on home-improvement related expenses is deductible. Since the bank gets a lien on your home, the rates are low. Sometimes you can even get debit cards that will hit the line. I think these are a good idea if: