Two important concepts in managing accounting records are the contra entry and the chart of accounts.
Contra Entry
A contra entry is a transaction whose debit and credit effects both fall within the same book. The most common example is in the cash book: when cash is banked, or withdrawn from the bank for office use, both the cash and bank columns are affected. Such entries are marked with the letter "C" (contra) in the folio column.
Example
RM2,000 cash is banked. In the cash book: debit the Bank column RM2,000 and credit the Cash column RM2,000. Both entries sit inside the same cash book, so it is a contra entry marked "C".
A set-off also arises when the same person is both a debtor and a creditor: the smaller balance is set off so that only the net balance needs to be settled.
Chart of Accounts
The chart of accounts is a complete, organised list of every account a business uses, usually coded by group: assets, liabilities, equity, revenue and expenses. It helps record transactions consistently and makes preparing the financial statements easier.
Key idea
The chart of accounts groups accounts into five categories: Assets, Liabilities, Owner's equity, Revenue and Expenses.
Coding and Benefits of the Chart of Accounts
In a chart of accounts, each account is usually given a code number according to its category — for example the 100 series for assets, 200 for liabilities, 300 for equity, 400 for revenue and 500 for expenses. This coding system lets transactions be recorded quickly, accurately and consistently, especially when the business uses a computerised accounting system. Other benefits include easier searching for accounts, fewer classification errors and faster preparation of the trial balance and the financial statements. With a well-organised chart of accounts, an auditor can also trace and check a transaction more easily.
Remember
A contra entry does not change total assets — it merely moves money between cash and bank. The chart of accounts is the "framework" that standardises how accounts are classified.