What is double-entry accounting and why is it important?

• A. Every transaction records only a debit.
• B. Every transaction has debits and credits that balance.
• C. Debits increase liabilities and credits increase assets.
• D. Double-entry accounting is optional in modern software.

Answer: (B)

In double-entry accounting, every transaction creates two side-by-side entries: debits and credits that must balance. This dual recording keeps the accounting equation—assets = liabilities + equity—always in balance and provides a complete, auditable trail of all activity. Because each transaction touches at least two accounts, you can see not just what changed, but how those changes relate to the overall financial picture. This structure also makes errors easier to spot and supports reliable financial statements.

That balance between debits and credits is why the statement stating that every transaction has both sides that balance is the best description. It captures the essential mechanism: two entries with equal totals, ensuring the books stay in harmony and giving a meaningful record for analysis and reporting.

The other ideas don’t fit. Recording only a debit ignores the necessary credit that must accompany it. The blanket claim about debits always increasing assets and credits always increasing liabilities oversimplifies how different accounts respond to debits and credits. And saying double-entry accounting is optional ignores the standard practice in modern accounting software and financial reporting, where dual entries are fundamental.