A record of a financial transaction in the accounting system, always containing at least one debit and one credit of equal amounts following double-entry bookkeeping.
A journal entry is the atomic unit of accounting — the smallest meaningful record of a financial event. Every time money changes hands, an obligation is created, an asset is acquired, or revenue is earned, an accountant records a journal entry. The entry must always be balanced: total debits must equal total credits.
Journal entries contain: the date of the transaction, the accounts to be debited and credited, the monetary amounts, and a brief narration or description. Complex transactions may involve more than two accounts (called compound journal entries), but the fundamental rule remains — debits = credits.
In practice: Bayani Consulting issues an invoice to a client for ₱80,000 in consulting fees. Journal entry: Debit Accounts Receivable ₱80,000 | Credit Service Revenue ₱80,000 | Narration: "Invoice No. 2025-0034 to ABC Manufacturing for Q1 strategy consulting." When payment arrives: Debit Cash ₱80,000 | Credit Accounts Receivable ₱80,000.
Why it matters: Understanding journal entries — even at a basic level — helps business owners catch errors in their accounting system. If a revenue account is incorrectly debited instead of credited, or an expense is posted to the wrong account, the resulting financial statements will be wrong. Business owners who can read journal entries can review their accountant's work and spot anomalies.
In modern accounting software (QuickBooks, Xero, Akauntants), most journal entries are created automatically as you record transactions — you issue an invoice and the software writes the debit/credit behind the scenes. But knowing the underlying mechanics helps when something goes wrong or when adjustments are needed.