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Accounting Foundations for UAE Business Owners/Double-Entry Bookkeeping
14 min

The Rules of Debit and Credit

Learn the five account categories and the debit/credit rules that govern how every transaction is recorded in double-entry bookkeeping.

Learning Objectives

By the end of this lesson, you will be able to:

  1. List the five categories of accounts used in double-entry bookkeeping.
  2. Apply the debit and credit rules for each category.
  3. Record simple business transactions using T-accounts.
  4. Explain why debits must always equal credits.

The Five Account Categories

Every account in bookkeeping falls into one of five categories:

  1. Assets — what the business owns (cash, receivables, inventory, equipment)
  2. Liabilities — what the business owes (payables, loans, VAT payable)
  3. Equity — the owner's interest (share capital, retained earnings)
  4. Revenue — income earned (sales, fees, interest received)
  5. Expenses — costs incurred (salaries, rent, utilities)

The Debit and Credit Rules

In double-entry bookkeeping, every transaction is recorded with at least one debit and one credit. The rules for each category are:

| Account Category | Debit | Credit | |---|---|---| | Assets | Increase | Decrease | | Liabilities | Decrease | Increase | | Equity | Decrease | Increase | | Revenue | Decrease | Increase | | Expenses | Increase | Decrease |

A simple memory aid: DEAD CLIC

  • Debits increase Expenses, Assets, and Drawings
  • Credits increase Liabilities, Income (revenue), and Capital (equity)

T-Accounts

A T-account is a visual representation of an account, shaped like the letter T:

      Cash Account
      -----------
  Debit | Credit
        |
  • Debits are recorded on the left side.
  • Credits are recorded on the right side.
  • The balance is the difference between total debits and total credits.

Recording Transactions with T-Accounts

Let's record three transactions for a UAE LLC:

Transaction 1: Owner invests AED 200,000 cash

  • Debit: Cash (Asset increases) — AED 200,000
  • Credit: Share capital (Equity increases) — AED 200,000

Transaction 2: Buy inventory for AED 30,000 on credit

  • Debit: Inventory (Asset increases) — AED 30,000
  • Credit: Accounts payable (Liability increases) — AED 30,000

Transaction 3: Sell inventory for AED 50,000 cash (cost AED 30,000)

Two entries are needed:

Revenue entry:

  • Debit: Cash (Asset increases) — AED 50,000
  • Credit: Sales revenue (Revenue increases) — AED 50,000

Cost of sales entry:

  • Debit: Cost of sales (Expense increases) — AED 30,000
  • Credit: Inventory (Asset decreases) — AED 30,000

Why Debits Must Equal Credits

Every transaction must have equal debits and credits. If they don't match, the entry is unbalanced and an error has been made. This is the fundamental check of double-entry bookkeeping.

When all entries for a period are posted, the total debits across all accounts must equal the total credits. If they don't, the trial balance will not balance, indicating a posting error.

Summary

There are five account categories: assets, liabilities, equity, revenue, and expenses. Each has specific debit and credit rules. Every transaction is recorded with at least one debit and one credit, and total debits must always equal total credits. T-accounts are a visual tool for tracking debits and credits per account.

This lesson is general educational content, not individualized tax or legal advice.

Practical UAE example

**For a Business Owner:** Khalid's Dubai consultancy receives AED 60,000 in fees and pays AED 25,000 in rent. He records: **Fees received:** - Debit Cash: 60,000 - Credit Revenue: 60,000 **Rent paid:** - Debit Rent expense: 25,000 - Credit Cash: 25,000 He can see that his cash balance increased by 35,000 (60,000 in minus 25,000 out), his revenue is 60,000, and his expenses are 25,000. --- **For a Junior Accountant:** Fatima posts the following T-accounts for her Abu Dhabi client: Cash Account: Debit 200,000 (investment), 60,000 (fees) | Credit 25,000 (rent) — Balance 235,000 Revenue Account: Credit 60,000 (fees) — Balance 60,000 Rent Expense Account: Debit 25,000 — Balance 25,000 Share Capital Account: Credit 200,000 — Balance 200,000 Total debits: 200,000 + 60,000 + 25,000 = 285,000 Total credits: 25,000 + 60,000 + 200,000 = 285,000 — balanced.

Key takeaways

  • The five account categories are assets, liabilities, equity, revenue, and expenses.
  • Debits increase assets and expenses; credits increase liabilities, equity, and revenue.
  • Every transaction must have equal debits and credits — if they don't match, an error has been made.
  • T-accounts are a visual tool for tracking debits (left) and credits (right) per account.
Knowledge check

1. A business receives AED 50,000 cash from a customer. How is this recorded?

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This lesson is general educational content, not individualized tax or legal advice. Always consult a qualified professional for your specific situation.