This is essential to preventing overdrafts and guaranteeing that you have adequate money to pay for your bills. Balancing the Account: You may quickly determine your current account balance by entering each transaction in the register.A checkbook register's principal function is to assist people or organizations in keeping an accurate and current record of their checking account balance. It covers checking and savings accounts as well as electronic payments, debit card, and ATM withdrawals and deposits. You may keep track of every deposit, withdrawal, and other financial activity pertaining to your checking account in this physical or digital ledger. To keep track of transactions in a checking account, one instrument for managing personal financial records is a checkbook register.