The traditional golden rules of accounting are memory aids for double-entry bookkeeping. They describe how personal, real and nominal accounts are used in that teaching approach. They do not replace the accounting standards, recognition rules or tax requirements that apply to a business.
Understand debits and credits
A debit is an entry on the left side of an account; a credit is an entry on the right. In double-entry bookkeeping, total debits equal total credits for each transaction. For common asset and expense accounts, increases are normally debits. For common liability, equity and revenue accounts, increases are normally credits. Contra accounts and specific transactions need additional care.
Personal accounts: the receiver and the giver
The traditional wording is debit the receiver and credit the giver. In practice, identify the actual account and transaction rather than guessing from who physically receives an item. For an illustrative purchase of $1,000 of inventory on credit, a perpetual-inventory system records a debit to inventory and a credit to accounts payable.
Real accounts: what comes in and goes out
The traditional rule is debit what comes in and credit what goes out. If a business buys qualifying equipment for $5,000 cash, the simplified entry debits equipment and credits cash by the same amount. One asset increases while another decreases; buying the equipment does not mean the whole payment is immediately an expense.
Nominal accounts: expenses and income
The traditional rule is debit expenses and losses and credit income and gains. For an illustrative $2,000 cash sale, the revenue entry debits cash and credits sales revenue. A business selling inventory must also record the related cost of goods sold and inventory movement under its accounting system. The revenue entry alone does not describe the whole transaction.
Check the complete transaction
A balanced entry can still be incorrectly classified or recorded in the wrong period. Review the supporting document, recognition requirements, amount and account selection. The accounting equation—assets equal liabilities plus equity—helps explain the relationship between accounts, but it is not a substitute for those checks.
Managers should use the rules to ask better questions about the books. An accountant can establish the appropriate account structure and reporting treatment for the business. Consistent records, reconciliation and review are what make the resulting reports useful.