In bank reconciliation, when a cash book shows a credit balance, uncredited cheques are: I. deducted from the cash book balance II. added to the bank statem...

When a business is overdrawn at the bank, its cash book bank column shows a credit balance, because the bank column is being treated as a liability rather than an asset. Bank reconciliation then explains the difference between this cash book overdraft figure and the overdraft shown on the bank statement.

An uncredited cheque is a cheque the business has already paid into the bank and recorded in its own cash book (which reduces the recorded overdraft), but which the bank has not yet processed and added to the account. Because the bank has not yet acted on it, the bank statement still shows a larger overdraft than the cash book does, by exactly the value of that cheque.

To move from the cash book (credit/overdraft) balance to the bank statement balance, this timing gap has to be added back: the cash book overdraft understates what the bank statement currently shows, so the amount of the uncredited cheque is added to the cash book balance to arrive at the bank statement figure.

Deducting the uncredited cheques from the cash book, or adding them straight to the bank statement figure without first starting from the cash book, would give the wrong reconciled amount, because it reverses the direction of the timing difference.

Examination reminder: when the cash book shows an overdraft, work out whether an item makes the bank statement's overdraft larger or smaller than the cash book's, and adjust in that direction rather than relying on the rule memorised for a favourable (debit) cash book balance.