What is a Trial Balance?


Trial Balance is a list of closing balances of ledger accounts on a certain date and is the first step towards the preparation of financial statements. It is usually prepared at the end of an accounting period to assist in the drafting of financial statements. Ledger balances are segregated into debit balances and credit balances. Asset and expense accounts appear on the debit side of the trial balance whereas liabilities, capital and income accounts appear on the credit side. If all accounting entries are recorded correctly and all the ledger balances are accurately extracted, the total of all debit balances appearing in the trial balance must equal to the sum of all credit balances.


Purpose of a Trial Balance

¨       Trial Balance acts as the first step in the preparation of financial statements. It is a working paper that accountants use as a basis while preparing financial statements.


¨       Trial balance ensures that for every debit entry recorded, a corresponding credit entry has been recorded in the books in accordance with the double entry concept of accounting. If the totals of the trial balance do not agree, the differences may be investigated and resolved before financial statements are prepared. Rectifying basic accounting errors can be a much lengthy task after the financial statements have been prepared because of the changes that would be required to correct the financial statements.
¨       Trial balance ensures that the account balances are accurately extracted from accounting ledgers.
¨       Trail balance assists in the identification and rectification of errors.

Example

Following is an example of what a simple Trial Balance looks like:

1.    Title provided at the top shows the name of the entity and accounting period end for which the trial balance has been prepared.
2.    Account Title shows the name of the accounting ledgers from which the balances have been extracted.
3.    Balances relating to assets and expenses are presented in the left column (debit side) whereas those relating to liabilities, income and equity are shown on the right column (credit side).
4.    The sum of all debit and credit balances are shown at the bottom of their respective columns.

Limitations of a trial balance

Trial Balance only confirms that the total of all debit balances match the total of all credit balances. Trial balance totals may agree in spite of errors. An example would be an incorrect debit entry being offset by an equal credit entry. Likewise, a trial balance gives no proof that certain transactions have not been recorded at all because in such case, both debit and credit sides of a transaction would be omitted causing the trial balance totals to still agree. Types of accounting errors and their effect on trial balance are more fully discussed in the section on Suspense Accounts.

How to prepare a Trial Balance

Following Steps are involved in the preparation of a Trial Balance:
1.    All Ledger Accounts are closed at the end of an accounting period.
2.    Ledger balances are posted into the trial balance.
3.    Trial Balance is cast and errors are identified.
4.    Suspense account is created to agree the trial balance totals temporarily until corrections are accounted for.
5.    Errors identified earlier are rectified by posting corrective entries.
6.    Any adjustments required at the period end not previously accounted for are incorporated into the trial balance.


Closing Ledger Accounts

Ledger accounts are closed at the end of each accounting period by calculating the totals of debit and credit sides of a ledger. The difference between the sum of debits and credits is known as the closing balance. This is the amount which is posted in the trial balance.

How closing balances are presented in the ledger depends on whether the account is related to income statement (income and expenses) or balance sheet (assets, liabilities and equity). Balance sheet ledger accounts are closed by writing 'Balance c/d' next to the balancing figure since these are to be rolled forward in the next accounting period. Income statement ledger accounts on the other hand are closed by writing 'Income Statement' next to the residual amount because it is being transferred to the income statement as revenue or expense incurred for the period.

The steps involved in closing a ledger account may be summarized as below:

1.    Add the totals of both sides of a ledger
2.    The higher of the totals among the debit side and credit side must be inserted at the end of BOTH sides.Closing balance is the balancing figure on the side with the lower balance.
3.    In case of ledger accounts of assets, liabilities and equity, 'balance c/d' is written next to the closing balance whereas in case of income and expenses ledger accounts, 'Income Statement' is written next to the closing balance.
4.    The closing balances of all ledger accounts are posted into the trial balance.


Next sections contain examples illustrating how the various types of ledger accounts are closed at the period end 31 December 2011

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