Credits are deposits or transfers of money into your account. Credits include cash or check deposits you make at the branch or ATM, automated clearing house, or ACH, credits such as automated payroll deposits, mobile check deposits and online banking or mobile transfers you make from another account. Debits are withdrawals or transfers of money out of your account. Some examples of debits are writing a check, using your debit card to withdraw funds or make a purchase, or initiating an outgoing online transfer from your account. Debits and credits, which are collectively known as items, officially post to your account during evening processing. As a result, items don't always post in the order in which the transactions occurred. Items post by transaction type or category. Within each transaction type, items post in sequential order (for example, check number) or dollar amount order (lowest to highest).