CORRECTION OF ERRORS IN A TRIAL BALANE

Errors in a Trial Balance

Trial balance as defined earlier in the page on Trial Balance is described as the summary of all credit and debit balances in the ledgers including the cash book. Since ledger is prepared on the basis of double entry principle, it is expected that the total of each sides of the trial balance to be equal. If the total of the two sides are not equal, it means that some errors had been occurred in the account.

At times, the two sides may be equal, yet some errors might have occurred in the trial balance without knowing. This leads us to the types of errors that we have.

Types of Errors in the Trial Balance

The likely errors that may occur in the trial balance can be categorized into two as follow:

  1. Errors that do not affect the agreement of a trial balance and
  2. 2. Errors that affect the agreement of a trial balance
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Errors that do not affect the Agreement of a Trial Balance

When the two sides of a trial balance agreed with each other i.e. the sum of all entries at the debit side of the trial balance is equal to the sum of all the entries at the credit side of the trial balance, this does not guaranteed that such trial balance is free from errors as there are some errors that may be made, yet the two sides of the trial balance will agreed with each other. Those errors are categorized under Errors that do not Affect the Agreement of a Trial Balance. These errors can be classified into six (6) as follow:

  1. Error of omission
  2. Error of commission
  3. Error of principle
  4. Error of originality
  5. Compensating error
  6. Complete reversal of entry
  1. Error of omission: This error occurs when entry is completely omitted from the book. This error mostly arise from source documents when the book-keeper mistakenly not recording some transactions Into the daybook i.e. loss of duplicate receipt or mistakenly opened two receipts together.

    Illustration on Error of Omission

    Cash sales of N 5,000 to Abiodun was completely omitted from the book.

    Explanation

    This means that the entries for the sales made to Abiodun was not recorded in the book at all which means that the transaction is captured in the book of account. Therefore, a ledger account is to be prepared to correct this. Since sales is a revenue which means cash is recieved, cash account will be debited while the coresponding credit entry will go to the Sales account.

    Solution

    Debit (Dr): Cash account
    Credit (Cr): Sales account

    Solution using Journal Proper
    Trial Balance Dr Cr
    N N
    Cash 5,000
    Sales 5,000
    Being Error of Omission Corrected
  2. Error of commission:This error occurs when transaction is recorded in wrong person’s account. This type of error most time occurs when names of customers or suppliers look almost the same with slight difference. At times, same names with different initials or one or two letters difference.
  3. Illustration on Error of Commision

    Credit sale of N 2,000 to Adeola was recorded to Adetola account.

    Explanation

    In the case of the illustration, both Adeola account and Adetola Account belong to the same class of account which is Debtors account (you can read more about this on classification of accounts). Therefore, the amount is to be removed from Adetola account by crediting his account with N2,000 while the corresponding debit entry is made to the Adeola account (the right buyer). These therefore, cancel the debt by error from Adetola account and increase the initial debt of Adeola.

    Solution

    Debit (Dr):Adeola account
    Credit (Cr):Adetola account

    Solution using Journal Proper
    Trial Balance Dr Cr
    N N
    Adeola 2,000
    Adetola 2,000
    Being Errors on Personal Accounts Corrected
  4. Error of principle:This error occurs when transaction is entered in a wrong class of account. That is, an entry that is supposed to be an asset is recorded as expenses.
  5. Illustration on Error of Principle

    Purchase of machinery for N 10,000 cash was entered into purchase account.

    Explanation

    Machinery is an asset because the purpose of buying it is for use and any item that is purchased with the intention of being used is classified as an asset to the business while an item can only be classified as purchases if the intention of purchasing such an item is to sell it.
    Machinery purchased belongs to the account class of real account and therefore be treated as an asset while purchases account is meant for items bought for the intension of being sold. In that case, the amount is removed from purchases account by crediting it and posted back to the machinery account by debiting the account. For more understanding about real account and nominal account, check out my post on Classification of Account.

    Solution

    Debit (Dr):Machinery account
    Credit (Cr):Purchases account

    Solution using Journal Proper
    Trial Balance Dr Cr
    N N
    Machinery 5,000
    Purchases 5,000
    Being Error of Principle Corrected
  6. Error of originality: This is otherwise called Error of Originality. It occurs when wrong value is entered in the book of original entry, thereby passing through the ledger with that same value. That is, the might have been wrongly recorded in the source document (receipt, invoice, among others) and that wrong value is recorded in the day book from which the ledger accounts are prepared. In that case, such value will have no effect on the balances of a trial balance.
  7. Illustration on Error of Original Entry or Originality

    Purchase of machinery for N55,800 was mistakenly entered in the cash book as N55,000 and passed through the ledger with the same amount.

    Explanation

    From the illustration, the amount of furniture was mistakenly understated by N800 and pass through the book like that. That means, there is need to add the missing amount back by charging N800 to cash book by crediting the account and debit machinery account with the same amount to update the value of the machinery to the actual value.

    Solution

    Debit (Dr):Machinery account
    Credit (Cr):Cash account

    Solution using Journal Proper
    Trial Balance Dr Cr
    N N
    Machinery 800
    Cash 800
    Being Undercasting Error oon Original Entry Corrected
  8. Compensating error:These are errors that cancel out each other. This occurs when an error made in an account is cancelled out by an error made in another account.
  9. Illustration on Compensating Error

    In calculating the rent account, the balance was wrongly recorded as N2,500 instead of N2,050. Coincidentally, the account of furniture and fittings was wrongly calculated as N9,550 instead of N10,000.

    Explanation

    Looking at the balance recorded in the rent account, the amount had been over stated by N450 (higher than the actual value of N2,050) but this could not discrepancy in the totals of the two sides of the trial balance because furniture account has also been wrongly undercharged with the same amount (charged with N9,550 instead of N10,000).

    The effect of this is that the discrepancy that would have occurred in the trial balance as a result of overcasting the rent which would have made the debit side of the trial balance to be higher than the credit side of the trial balance had been cancelled by the furniture and fittings which was undercharged with same amount (N450).

    In this case, a suspense account will be raised to correct the two account. The overcharged amount in the rent account will be removed by crediting the account with N450 while the corresponding debit entry will be made to the raised suspense account. Same treatment applied to the furniture account that was understated, the account is debited with N450 to increase its total to the actual amount of N10,000 while the corresponding credit entry is made to the suspense account.

    Solution

    Credit (Cr):Rent account
    Debit (Dr):Suspense account
    Debit (Dr):Furniture account
    Credit (Cr):Suspense account

    Solution using Journal Proper
    Trial Balance Dr Cr
    N N
    Rent 450
    Suspense 450
    Furniture 450
    Suspense 450
    Being Wrong values Corrected
  10. Complete reversal of entry: In this situation, the original amount is recorded but entered on the wrong side of the account and passes through the book like that. In that case, there is need to remove the amount recorded in the wrong side and reposted it to the actual side of the account, there by doubling the value to be recorded at the actual side of the account.
  11. Illustration on Error of Commision

    Payment of salaries in cash, N12,000 was debited to cash account and credited to salaries account.

    Explanation

    Payment of salary is an expenses which is to be credited to cash account and debited to salaries account but the reverse was the case as stated above. In that case, to correct the error, the amount has to be removed first from both account by crediting cash account with N12,000 and debiting the expenses with same amount. With this step, both cash account and rent account returned to their previous values before the transaction was made.

    Now, make normal posting for the transaction by crediting the cash account with N12,000 and debiting the salaries account with N12,000.

    If this is viewed thoroughly, we will realized that the amount is being doubled in each sides of the account i.e. Cash account is credited with N24,000 and Salaries account is debited with N24,000.

    Solution

    Debit (Dr):Salaries account
    Credit (Cr):Cash account

    Solution using Journal Proper
    Trial Balance Dr Cr
    N N
    Salaries 24,000
    Cash 24,000
    Being Entries made in Wrong Side of Account Corrected

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