Financial accounting is a crucial skill for human resource professionals as it enables effective management of organizational funds, budget monitoring, and financial reporting related to personnel costs. Mastery of cash books, which are fundamental records of cash transactions, allows HR practitioners to maintain accurate financial control, particularly in payroll, reimbursements, and petty cash disbursements. This chapter focuses on preparing and managing cash books within the HR context in Kenya, ensuring professionals can support transparent and efficient financial operations in institutions such as county governments, banks, and hospitals.

4.1 Errors affecting the trial balance

A trial balance is a list of all ledger account balances at a given date, with debit balances in one column and credit balances in the other. If every transaction has been recorded with equal debits and credits and every account correctly balanced, the two columns add up to the same total. Errors affecting the trial balance are mistakes that make the two totals differ, so they show up as a difference that must be found and corrected before final accounts are prepared. Example: the accountant of a hotel in Malindi adds the columns of the trial balance and finds a debit total of Ksh 585,400 against a credit total of Ksh 581,900, so a mistake of Ksh 3,500 is hiding somewhere in the books.

4.1.1 Why some errors upset the trial balance

The trial balance rests on double entry: every debit has an equal credit. Any error that breaks this equality on one side only will make the totals disagree. Errors that keep debits equal to credits do not show up in the trial balance and are dealt with in 4.2. When the two totals disagree, the difference is written in a suspense account until the cause is found, a matter covered in 4.4, and the corrections themselves are covered in 4.3.

4.1.2 Types of errors that affect the trial balance

• One-sided entry: One half of a transaction is recorded and the other half is left out, so only one side changes. Example: a school in Nyeri receives Ksh 12,000 fees and debits the bank account but never credits the fees account, making the debit total Ksh 12,000 too high.
• Unequal amounts: The debit and the credit of the same transaction are recorded with different figures. Example: a cheque of Ksh 5,400 is debited to the supplier's account as Ksh 5,400 but credited to the bank as Ksh 4,500, leaving the credit side Ksh 900 short.
• Wrong addition of an account (casting error): The debit or credit side of a ledger account is added up wrongly, so the balance carried to the trial balance is wrong. Example: a SACCO adds a loans account total as Ksh 148,000 when it is Ksh 143,000.
• Wrong balancing of an account: The difference between the two sides is calculated wrongly, or the balance is carried down with a wrong amount.
• Balance entered on the wrong side: A debit balance is placed in the credit column of the trial balance, or the reverse, so the difference is twice the amount of the balance.
• Balance copied wrongly: A balance is transferred to the trial balance with its figures changed, for example Ksh 36,200 written as Ksh 32,600.
• Balance omitted: An account with a balance is left out of the trial balance altogether.
• Same side posted twice: A debit or a credit is posted two times while the opposite entry is made once.
• Transposition on one side: The digits of an amount are reversed in one entry only, for example Ksh 6,300 recorded as Ksh 3,600 on the debit side but correctly on the credit side.
• Trial balance addition errors: The columns of the trial balance itself are added wrongly, so the totals disagree although the ledger is correct.

4.1.3 Detecting the cause of a trial balance difference

The size of the difference often points to the cause. Accountants check the following clues first because they save hours of searching.

• Difference equal to one amount: Look for a transaction of exactly that amount, which suggests a one-sided entry or an omitted balance.
• Difference divisible by 9: A transposition of digits is likely. Example: a difference of Ksh 900, and 900 ÷ 9 = 100, suggests Ksh 5,400 was written as Ksh 4,500.
• Difference divisible by 2: A balance may be on the wrong side. Divide the difference by 2 and look for a balance of that amount. Example: a difference of Ksh 14,000 gives 14,000 ÷ 2 = Ksh 7,000, so look for a balance of Ksh 7,000.
• Difference of 10, 100 or 1,000: An addition error in one column is likely.
• Difference of the same figure as a double entry: A posting made twice on one side is possible.

4.1.4 Procedure for locating errors

1. Add the trial balance again: Re-add both columns, since addition mistakes in the trial balance itself are the simplest to find.
2. Calculate the difference: Subtract the smaller total from the larger and note which side is higher.
3. Apply the clues: Test whether the difference is divisible by 9, divisible by 2, or equal to a known balance or transaction.
4. Check that every ledger account is included: Compare the list of ledger accounts with the trial balance to find any omitted balance.
5. Check balances and sides: Confirm that each balance is copied correctly and is in the correct column.
6. Re-add and re-balance ledger accounts: Recalculate the totals of each account to find casting and balancing errors.
7. Check postings from the books of original entry: Trace each entry in the cash book and journals to the ledger, ticking each one, to find one-sided entries, unequal amounts and double postings.
8. Open a suspense account if time runs out: Enter the difference in a suspense account so that the trial balance agrees while the search continues.

4.1.5 Worked example

Example: a hotel in Malindi draws up a trial balance with these totals.

Formula: difference = larger total − smaller total

Substitution: 585,400 − 581,900

Result: difference = Ksh 3,500, with the debit side higher

The difference is not divisible by 9 and is not an even half of any balance, so the accountant looks for an entry of Ksh 3,500. The cash book shows a cheque of Ksh 3,500 paid for kitchen repairs, credited to the bank account, but the repairs account has no matching debit entry. If the debit had been missing, the credit side would be higher, so this check is made against the side with the higher total: here the debit side is higher, which means a debit was entered without a credit, and the accountant finds that the Ksh 3,500 was debited to the repairs account twice by mistake and credited once.

Cause: the repairs account was debited twice, Ksh 3,500 each time, while the bank account was credited once.

Effect: debit total overstated by Ksh 3,500.

Correction: the repairs account is credited with Ksh 3,500 to cancel the second debit, which restores the equality of the two columns.

4.1.6 Preventing errors that affect the trial balance

• Tick each posting: Mark each entry in the books of original entry when it is posted, so none is omitted or posted twice.
• Use control accounts and reconciliations: Compare ledger balances with independent records such as bank statements and supplier statements.
• Check additions twice: Have a second person re-add large accounts and the trial balance columns.
• Use accounting software: Systems that refuse unbalanced entries remove one-sided postings and many casting errors.
• Train bookkeepers: Staff who understand double entry make fewer sign and side errors.

Chapter Summary

This chapter focused on the preparation and management of cash books, beginning with an exploration of the two-column cashbook which records both cash and bank transactions. It then extended to the three-column cashbook that incorporates a discount column, allowing for more detailed financial tracking. The role and operation of the petty cashbook were also examined, highlighting its use for small, routine expenses. The classification of cash receipts was outlined to ensure accurate categorization of incoming funds. Detailed methods for recording cash receipts were provided to maintain organized financial records. The chapter concluded by distinguishing between different types of discounts, explaining cash discounts as incentives for prompt payment, trade discounts as reductions offered by suppliers, and quantity discounts as price reductions based on purchase volume. These concepts collectively contribute to effective cash management and accurate financial accounting.