Checking accounts are marketed as free, and for a customer who keeps a comfortable balance and never slips, they usually are. The fee schedule exists for the other months — and it is written in a document almost nobody opens, in language designed to be skimmed.
The expensive ones cluster around short-term shortfalls. Overdraft and insufficient-funds charges are flat amounts that are enormous relative to the transaction that triggered them, and they can be applied several times in a single day. Opting out of overdraft coverage, where that is available, converts an expensive surprise into a declined transaction.
Then there are the maintenance conditions. Many accounts waive their monthly fee if a direct deposit arrives, or a minimum balance is maintained, or a number of card transactions clears. Those conditions are easy to meet and easy to miss during exactly the months when money is tight, which is when the fee lands.
The rest are situational: out-of-network cash withdrawals, foreign transaction charges, paper statements, wire transfers, card replacement. None are worth losing sleep over, but all are worth knowing before they happen. Read the schedule once, write down the four charges you could plausibly trigger, and set a low-balance alert. That is twenty minutes of work against a recurring, avoidable cost.
