All business transactions are first recorded in Journal or Subsidiary Books. They are transferred to Ledger and balanced it. The main object of keeping the books of accounts is to ascertain the profit or loss of business and to assess the financial position of the business at the end of the year. The object is better served if the businessman first satisfies himself that the accounts written up during the year are correct or al least arithmetically accurate. When the transactions are recorded under double entry system, there is a credit for every debit, when on a/c is debited; another a/c is credited with equal amount. If a Statement is prepared with debit balances on one side and credit balances on the other side, the totals of the two sides will be equal. Such a Statement is called Trial Balance.