A trial balance is a list of all the general ledger accounts (both revenue and capital) contained in the ledger of a business. This list will contain the name of each nominal ledger account and the value of that nominal ledger balance. Each nominal ledger account will hold either a debit balance or a credit balance. The debit balance values will be listed in the debit column of the trial balance and the credit value balance will be listed in the credit column. The trading profit and loss statement and balance sheet and other financial reports can then be produced using the ledger accounts listed on the same balance. History The first published description of the process is found in Luca Pacioli's 1494 work Summa de arithmetica, in the section titled Particularis de Computis et Scripturis. Although he did not use the term, he essentially prescribed a technique similar to a post-closing trial balance. Usage The purpose of a trial balance is to prove that the value of all the debit value balances equals the total of all the credit value balances. If the total of the debit column does not equal the total value of the credit column then this would show that there is an error in the nominal ledger accounts. This error must be found before a profit and loss statement and balance sheet can be produced. Hence trial balance is important in case of adjustments. Whenever any adjustment is performed run trial balance and confirm if all the debit amount is equal to credit amount. The trial balance is usually prepared by a bookkeeper or accountant who has used daybooks to record financial transactions and then post them to the nominal ledgers and personal ledger accounts. The trial balance is a part of the double-entry bookkeeping system and uses the classic 'T' account format for presenting values. Limitations A trial balance only checks the sum of debits against the sum of credits. That is why it does not guarantee that there are no errors. The following are the main classes of errors that are not detected by the trial balance. An error of original entry is when both sides of a transaction include the wrong amount. For example, if a purchase invoice for £21 is entered as £12, this will result in an incorrect debit entry (to purchases), and an incorrect credit entry (to the relevant