The Difference Between Credit and Debit in Accounting: A Simple Explanation with Examples

The difference between debit and credit in accounting is that debit represents the left side of an accounting entry, while credit represents the right side, and the effect of each depends on the type of account.

Assets and expenses increase on the debit side, while liabilities, equity, and revenue increase on the credit side.

Therefore, the word Debit does not always mean that someone owes a debt, just as the word Credit does not always mean that someone is owed money. For example, an increase in cash on hand is recorded on the debit side because it is an asset, while an increase in sales is recorded on the credit side because it is revenue.

The basic rule to remember is:

Total debits = Total credits in every balanced accounting entry.

At Aamal Raqmiyah we recommend understanding the nature of the account first rather than memorizing entries. When you know whether an account is an asset, liability, revenue, or expense, identifying the debit and credit sides becomes easier.

You can understand this relationship more fully through the guide to Elements of the Accounting System, which explains how transactions move from documents to entries, accounts, and reports.

What Do Debit and Credit Mean in Accounting?

Debit Debit is the left side of the entry, andCredit Credit is the right side.

However, determining which account belongs on each side depends on the type of account and the effect of the transaction on it.

Account Type When Increasing When Decreasing
Assets Debit Credit
Expenses Debit Credit
Liabilities Credit Debit
Equity Credit Debit
Revenue Credit Debit

This is the basic rule that helps you analyze most accounting transactions.

   
       
           

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How Do I Identify the Debit Account and the Credit Account?

Before recording any entry, use three steps:

  1. Identify the accounts affected by the transaction.
  2. Identify the type of each account.
  3. Determine whether the account increased or decreased.

Suppose the company purchased a piece of equipment for cash for 5,000 riyals.

The equipment is an asset that has increased, so it is debited. Cash is also an asset, but it has decreased, so it is credited.

Entry for Purchasing Equipment for Cash

Account Debit Credit Reason for Treatment
Equipment 5,000 riyals — An asset increased
Cash on Hand — 5,000 riyals An asset decreased
Total 5,000 riyals 5,000 riyals The entry is balanced

Thus, we can identify both sides of the entry through the account type and the direction of change rather than simply memorizing the entry.

Example of a Cash Sale

The company sold products for cash for 10,000 riyals, ignoring tax and cost of sales to simplify the example.

Cash increased, and it is an asset, so it is debited. Sales are revenue and have increased, so they are credited.

Cash Sale Entry

Account Debit Credit Reason for Treatment
Cash on Hand 10,000 riyals — An asset increased
Sales — 10,000 riyals Revenue increased
Total 10,000 riyals 10,000 riyals The entry is balanced

This example explains why the word “debit” does not mean that cash on hand owes a debt; rather, it indicates the accounting side on which the increase is recorded.

Why Does a Customer Have a Debit Balance?

When a company sells to a customer on credit, an amount becomes due from the customer, so the customer's account is usually recorded on the debit side.

Suppose the company issued a credit sales invoice for 20,000 riyals.

Entry for a Credit Sale to a Customer

Account Debit Credit Reason for Treatment
Customer 20,000 riyals — Increase in accounts receivable
Sales — 20,000 riyals Increase in revenue
Total 20,000 riyals 20,000 riyals The entry is balanced

If the customer subsequently pays 7,000 riyals:

Entry for Receiving a Payment from a Customer

Account Debit Credit Reason for Treatment
Bank or Cash on Hand 7,000 riyals — Increase in cash
Customer — 7,000 riyals Decrease in the amount due from the customer
Total 7,000 riyals 7,000 riyals The entry is balanced

The customer's remaining balance becomes:

20,000 - 7,000 = 13,000 riyals debit

This is why the accounting system needs to link sales invoices and collections directly to the customer's account.

An integrated accounting system from Aamal Raqmiyah provides customer, sales, and collections management within an interconnected accounting cycle.

Why Does a Supplier Have a Credit Balance?

When a company purchases from a supplier on credit, it incurs a liability to that supplier, so the supplier's account usually shows a credit balance.

Suppose the company purchased goods worth 30,000 riyals on account.

Entry for a Credit Purchase from a Supplier

Account Debit Credit Reason for Treatment
Purchases or Inventory 30,000 riyals — Increase in purchases or the asset
Supplier — 30,000 riyals Increase in the liability to the supplier
Total 30,000 riyals 30,000 riyals The entry is balanced

If the company pays the supplier 10,000 riyals:

Entry for Payment to a Supplier

Account Debit Credit Reason for Treatment
Supplier 10,000 riyals — Decrease in the liability
Bank or Cash on Hand — 10,000 riyals Decrease in cash
Total 10,000 riyals 10,000 riyals The entry is balanced

The remaining amount owed to the supplier is:

30,000 - 10,000 = 20,000 riyals credit

You can review the guide to Sales and Purchases Accounting to understand the effect of sales and purchases on customer and supplier accounts.

The Difference Between a Customer Debit Balance and a Supplier Credit Balance

Transaction Affected Account Effect
Credit sale to a customer Customer Debit
Receiving a payment from a customer Customer Credit, reducing the balance
Credit purchase from a supplier Supplier Credit
Payment to a supplier Supplier Debit, reducing the balance

In brief:

Customer debit balance = An amount owed to the company.

Supplier credit balance = An amount owed by the company.

However, there are cases where a customer may have a credit balance or a supplier may have a debit balance.

Can a Customer Have a Credit Balance?

Yes.

This may happen when:

  • The customer pays in advance.
  • The customer pays more than the outstanding balance.
  • A return is recorded after the invoice has been paid.
  • An adjustment results in a balance in the customer's favor.

For example, if the customer pays 5,000 riyals in advance before any invoice is issued:

Entry for an Advance Payment from a Customer

Account Debit Credit
Bank or Cash on Hand 5,000 riyals —
Customer Account — 5,000 riyals
Total 5,000 riyals 5,000 riyals

The customer's account may therefore show a credit balance until the amount is offset against a later invoice.

Can a Supplier Have a Debit Balance?

Yes.

If a company pays a supplier in advance before receiving the goods or recording the purchase invoice, the supplier's account may show a debit balance.

Example of an Advance Payment to a Supplier

Account Debit Credit
Supplier 10,000 riyals —
Bank or Cash on Hand — 10,000 riyals
Total 10,000 riyals 10,000 riyals

Therefore, the accuracy of a balance should not be judged by the word “debit” or “credit” alone; the transactions that produced the balance must be reviewed.

How Do Debits and Credits Appear on an Account Statement?

An account statement usually contains:

  • Date.
  • Document number.
  • Description.
  • Debit.
  • Credit.
  • Balance.

Example of a customer account:

Transaction Debit Credit Debit Balance
Sales invoice 10,000 — 10,000
Collection — 4,000 6,000
New invoice 5,000 — 11,000
Collection — 3,000 8,000

The final balance is therefore:

8,000 riyals debit

This is why understanding both sides of an entry is important when reviewing customer and supplier account statements and reconciling balances.

The Difference Between Debits and Credits in Assets and Liabilities

Assets

These include:

  • Cash on hand.
  • Bank.
  • Customers.
  • Inventory.
  • Equipment.
Change in the Asset Treatment
Increase in the asset Debit
Decrease in the asset Credit

Liabilities

These include:

  • Suppliers.
  • Loans.
  • Accrued liabilities.
Change in the Liability Treatment
Increase in the liability Credit