What Is a Ledger in Accounting?

A ledger is a book or record where all journal entries are posted into individual accounts. While the journal records transactions in chronological order, the ledger groups transactions account-wise. Each account, such as Cash, Capital, Rent Expense, or Accounts Payable, has its own ledger page.

Posting to the ledger helps determine account balances at the end of an accounting period.

How to Prepare a Ledger

Step 1: Record transactions in the journal.
Step 2: Transfer each debit and credit to the respective ledger accounts.
Step 3: Total both sides of each account.
Step 4: Calculate the closing balance.

Example
Journal Entry: Owner invested $15,000 cash.

Debit: Cash $15,000
Credit: Capital $15,000

Ledger Posting

Cash Account
Debit side: 15,000
Balance: 15,000

Capital Account
Credit side: 15,000
Balance: 15,000

Each ledger account shows how much increase or decrease occurred during the period.

What Is a Trial Balance?

A trial balance is a statement prepared at the end of an accounting period to check whether total debits equal total credits. It lists all ledger accounts and their balances.

If total debits equal total credits, the books are arithmetically correct.

Example Trial Balance

Cash 10,000 (Debit)
Furniture 5,000 (Debit)
Capital 12,000 (Credit)
Accounts Payable 3,000 (Credit)

Total Debit = 15,000
Total Credit = 15,000

Since both totals match, the trial balance agrees.

How to Prepare a Trial Balance

Step 1: Extract balances from each ledger account.
Step 2: List all debit balances in one column and credit balances in another.
Step 3: Add both columns.
Step 4: Compare totals.

If totals match, the accounting records are mathematically accurate.

Why Errors Occur in Trial Balance

Even if totals match, errors can still exist. Common mistakes include omission of a transaction, recording the wrong amount, posting to the wrong account, and compensating errors where two mistakes cancel each other.

If totals do not match, errors may be due to mathematical mistakes, posting only one side of a transaction, or recording unequal debit and credit amounts.

Understanding ledgers and trial balances is essential because they form the basis for preparing final accounts like the income statement and balance sheet. Mastering these fundamentals ensures accurate financial reporting and strong accounting knowledge.