Reconciliations and Internal Accuracy Checks

Learning objectives

By the end of this chapter, you should be able to:

• Prepare a bank reconciliation using cash-book (bank column) and bank-statement information, identifying and explaining all differences.
• Update the cash book for missing items and errors, and distinguish these from timing differences.
• Reconcile a supplier’s statement to the supplier ledger balance, identifying omissions, errors, and timing items.
• Explain how reconciliations strengthen internal control and improve the reliability of reported balances.
• Decide which reconciling items require journal entries and which are explained through reconciliation only.

Overview & key concepts

Reconciliations are internal accuracy checks that compare two independent records that should describe the same balance. Their purpose is to confirm that recorded balances are complete and accurate, and to highlight items that need correction or investigation. A properly documented reconciliation:

• identifies missing entries and posting errors,
• separates timing items from true errors,
• supports safeguarding of cash and other key balances,
• strengthens completeness and cut-off, particularly for payables and cash,
• creates evidence for review and audit.

Two reconciliations are particularly important:

• bank reconciliation (cash book bank column vs bank statement), and
• supplier statement reconciliation (supplier statement vs supplier ledger).

Key terms

Reconciliation

Reconciliation is the process of comparing two records for the same balance and then explaining, correcting, or investigating the differences so that the final position is supported by evidence.

Internal control

Internal control is the set of procedures used to reduce the risk of error and loss and to improve the reliability of accounting records. Regular reconciliations are a key internal control because they force routine review, make unusual items visible, and provide a clear trail of follow-up.

Bank statement and cash book (bank column)

• Thebank statementis the bank’s record of transactions and the closing balance at a specific date.
• Thecash book (bank column)is the business’s record of receipts and payments through the bank account.

Because the two records are maintained by different parties and updated at different times, differences are common.

Timing differences

Timing differences arise when a valid transaction has been recorded in one record but has not yet appeared in the other at the cut-off date. Timing differences do not require journal entries in the business records.

Common timing differences:

• Outstanding lodgements: deposits recorded in the cash book but not yet credited on the bank statement.
• Unpresented cheques: payments recorded in the cash book but not yet cleared by the bank.

Bank-originated items and reversals

These often appear on the bank statement before the business records them:

• Direct debit: the bank pays a third party based on authority granted by the account holder.
• Standing order: the bank makes a regular payment based on the account holder’s instruction.
• Bank charges: fees deducted by the bank.
• Dishonoured receipt: a previously credited receipt is reversed by the bank (for example, a customer cheque that fails).

These items normally require cash-book entries because they represent real movements on the bank account.

Supplier statement and supplier ledger

A supplier statement shows the supplier’s view of invoices, credit notes, payments received, and the resulting balance. The supplier ledger shows the business’s view. Reconciling the two supports the completeness and accuracy of trade payables and improves cut-off by highlighting unrecorded invoices or missing credit notes.

Method and logic

Bank reconciliation: “Correct, explain, chase”

A practical approach is:

• Correctthe cash book (bank column): update it for items processed by the bank but not yet recorded by the business, and correct any cash-book errors.
• Explainthe remaining difference: after the cash book is corrected, any remaining gap between corrected cash book and bank statement should be timing only.
• Chaseunusual or old items: aged reconciling items and unexpected transactions should be investigated promptly and supported by evidence.

Before listing differences, the practical starting point is to agree what can be agreed: compare the cash book and bank statement and confirm which transactions appear in both, so the remaining items are the true reconciling items.

Deciding whether to post a journal entry

Use this decision question:

Is the cash book wrong or incomplete, or is the bank statement simply ahead/behind at the cut-off date?

• If the cash book is missing an item or contains an error,post an entryto correct it.
• If the cash book entry is correct and the difference is only that the bank has not yet processed it (or it has not yet appeared on the statement),do not post. List it as a reconciling item.

Supplier statement reconciliation: how to structure it

Choose a consistent starting point and reconcile to the other balance. Many students start from the supplier statement because it provides an external check on completeness.

The key is to adjust for items that explain why the two records differ at the cut-off date:

• Items missing from the business records(for example, an invoice received late, a credit note not recorded, statement charges or late payment fees not recorded) indicate the supplier ledger does not yet reflect the same transactions. These usually require correction in the business books once verified.
• Items in transit(for example, a payment sent by the business but not yet allocated by the supplier) often explain timing differences and are supported by bank payment proof and remittance advice.
• Apparent supplier errors(for example, duplicate invoice on the statement, misallocation) should be raised with supporting documents and followed up.

Evidence commonly used includes purchase invoices, goods received notes, credit notes, remittance advice, and bank payment confirmations. This reconciliation supports trade payables completeness and cut-off.

Worked example

Narrative scenario

Greenford Services is preparing its monthly bank reconciliation at 31 May.

• Cash-book (bank column)debit balance: £8,420
• Bank-statement balance: £7,965

On review, the following differences are identified:

1. Bank charges of £45 not recorded in the cash book.
2. A direct debit for insurance of £280 not recorded.
3. A credit transfer from a customer of £620 not recorded.
4. A dishonoured customer cheque of £350 not recorded.
5. A cheque to a supplier was entered in the cash book as £540, but the correct amount was £450 (cash-book overstatement of the payment).
6. Outstanding lodgement: £1,100.
7. Unpresented cheques: £500.
8. The bank statement includes a loan repayment by standing order of £1,090 not yet recorded in the cash book.

Required

• Compute the corrected cash-book balance.
• Prepare the bank reconciliation.
• Identify which items require journal entries.
• Explain the impact on the financial statements.

Solution

Step 1: Update and correct the cash book (bank column)

Start with the cash-book balance (debit): £8,420.

Assumption for the customer credit transfer: it is a receipt from a customer settling an outstanding receivable.

Add receipts credited by the bank but missing from the cash book:

• Customer credit transfer: +£620

Deduct items processed by the bank but missing from the cash book:

• Bank charges: -£45
• Insurance direct debit: -£280
• Dishonoured customer cheque (reversal of receipt): -£350
• Loan repayment standing order: -£1,090

Correct the cash-book error on the supplier cheque:

• The cash book recorded £540, but the correct payment is £450.
• The cash book reduced the bank balance by £90 too much, soadd back £90.

8,420 + 620 - 45 - 280 - 350 + 90 - 1,090 = 7,365

The corrected cash-book balance at 31 May is £7,365 debit.

Step 2: Bank reconciliation (presentation)

Start from the corrected cash-book balance and adjust for timing differences only to arrive at the bank statement balance:

Corrected cash-book balance: £7,365
Add: outstanding lodgement (recorded in cash book, not yet on statement): £1,100
Less: unpresented cheques (recorded in cash book, not yet cleared): £500
Balance per bank statement: £7,965

This agrees to the bank statement, so the remaining difference is timing only.

Step 3: Which items require journal entries?

Journal entries required (cash book updates):

• Bank charges (£45)
• Insurance direct debit (£280)
• Customer credit transfer (£620)
• Dishonoured customer cheque (£350)
• Supplier cheque cash-book error (£90 correction)
• Loan repayment standing order (£1,090)

No journal entries (timing differences only):

• Outstanding lodgement (£1,100)
• Unpresented cheques (£500)

Step 4: Journal entries for the cash-book update

Customer credit transfer received (assumed settlement of receivable)

Dr Bank 620
Cr Trade receivables 620

Bank charges

Dr Bank charges expense 45
Cr Bank 45

Insurance direct debit

Dr Insurance expense (or prepaid expense, if applicable) 280
Cr Bank 280

Dishonoured customer cheque (reversal)

Dr Trade receivables 350
Cr Bank 350

Supplier cheque entered as £540 instead of £450 (cash-book overstatement)

Assumption: the original entry credited trade payables for the amount recorded in the cash book.

Dr Bank 90
Cr Trade payables 90

Loan repayment standing order

This entry depends on whether the standing order is principal-only or includes interest.

Assumption A (principal-only repayment):

Dr Loan payable 1,090
Cr Bank 1,090

If the repayment includes interest, split the debit:

Template for split repayment:

Dr Interest expense X
Dr Loan payable (principal) (1,090 - X)
Cr Bank 1,090

Use the loan/bank breakdown to determine X.

Impact on the financial statements

• Cash (bank) in the accounting records becomes £7,365 after posting missing items and correcting errors.
• Expenses increase for bank charges (£45) and insurance (£280), reducing profit for the period.
• Trade receivables decrease by £620 for the customer receipt, then increase by £350 due to the dishonoured cheque (net decrease £270).
• Trade payables increase by £90 because the cash-book posting overstated the supplier payment and reduced the payable too far.
• Loan payable reduces by £1,090 only if the standing order is principal-only. If interest is included, only the principal portion reduces the liability and the interest portion reduces profit.
• The bank statement shows £7,965 while the corrected cash book shows £7,365 because timing items create a net £600 difference (£1,100 outstanding lodgement less £500 unpresented cheques).

Common pitfalls and misunderstandings

• Treating timing differences as errors: outstanding lodgements and unpresented cheques are normally timing items and are not journalised.
• Posting entries to “force” agreement: the reconciliation should explain differences, not create an artificial adjustment.
• Mishandling dishonoured receipts: a dishonoured cheque reverses a receipt, so receivables usually reappear and bank decreases.
• Loose assumptions on loan repayments: repayments often include interest. If the question does not provide a split, state a clear assumption or show the split template.
• Misdescribing cash-book errors as “overpayment”: the business may have paid the correct amount but recorded it incorrectly. Keep the language focused on recording, not cash actually sent.
• Not investigating old reconciling items: long-outstanding reconciling items should be queried and supported by evidence.

Summary

Reconciliations confirm the accuracy of key balances by comparing independent records and explaining differences. Bank reconciliations ensure that the cash book (bank column) is complete and correct by:

• updating it for bank-originated items and correcting posting errors, and
• reconciling the corrected cash-book balance to the bank statement using timing differences only.

Supplier statement reconciliations support the completeness and cut-off of trade payables by highlighting unrecorded invoices, missing credits, payments in transit, and errors. Strong reconciliations are evidence-based, clearly presented, and promptly investigated where differences are unusual or aged.

FAQ

Why are reconciliations important?

They help confirm that balances are complete and correctly recorded, and they make missing entries, errors, and unusual items visible for correction and investigation.

What is the difference between a timing difference and an error?

A timing difference occurs because one record is updated before the other (for example, a lodgement not yet credited). An error is a wrong or missing entry that must be corrected in the accounting records.

When should a journal entry be posted?

Post an entry when the cash book is missing an item or contains an error (charges, direct debits, standing orders, dishonoured receipts, incorrect amounts). Do not post entries for pure timing differences.

How does a bank reconciliation strengthen internal control?

It forces regular review of cash movements, reduces the risk of undiscovered errors and irregularities, and creates documented evidence that can be reviewed and approved.

What commonly causes supplier statement differences?

Invoices or credit notes not yet recorded, payments in transit, posting mistakes, and misallocations. Supporting evidence typically includes invoices, goods received notes, credit notes, remittance advice, and bank payment confirmations.

Glossary

Reconciliation
A comparison of two records for the same balance, with differences identified, explained, and corrected where necessary.

Internal control
Procedures used to reduce risk of error and loss and to improve the reliability of accounting information.

Bank statement
The bank’s record of transactions and the closing balance at a specific date.

Cash book (bank column)
The business’s record of receipts and payments through its bank account.

Timing difference
A difference caused by one record being updated before the other, even though the transaction is valid.

Outstanding lodgement
A deposit recorded by the business but not yet credited by the bank at the reconciliation date.

Unpresented cheque
A payment recorded by the business that has not yet cleared through the bank at the reconciliation date.

Direct debit
An automated payment collected from the bank account by an authorised party.

Standing order
A regular automated payment made by the bank based on the account holder’s instruction.

Bank charges
Fees deducted by a bank for services or account administration.

Dishonoured receipt
A receipt previously credited that is later reversed by the bank because the incoming payment fails.

Supplier statement
A summary provided by a supplier showing invoices, credit notes, payments, and the balance they believe is outstanding.