The general guidance is to have enough money in an emergency fund to cover three to six months of essential bills. That amount ... the guidelines for keeping cash on hand change quite a bit.

As a security measure, it's always a good idea to have cash on hand for an emergency in case you have a situation where you can't use your credit card, like when the balance is already racked up ...

A proposed law would require businesses with a physical presence in Arizona to accept cash for purchases of $100 or less.