Which option is most commonly considered a source document in accounting systems?

Which option is most commonly considered a source document in accounting systems?

• A. Time cards
• B. Journal entries
• C. Trial balance
• D. Ledgers

Answer: (A)

A source document is the original record that captures the details of a business transaction before anything is posted to the books, providing the evidence and data the system uses to record entries. Time cards fit this role because they are the origination record for payroll-related data—they document the hours worked, which are then used to calculate wages, payroll taxes, and labor costs. Everything that follows in the accounting process (journal entries, posting to ledgers, and generating trial balances) relies on the data captured at this stage. Journal entries are the formal records created to reflect transactions after the source data is collected; they’re part of the recording process, not the initial source. A trial balance is a summary listing of ledger balances used to verify accuracy, not a source of transaction data. Ledgers are the organized collections of accounts that accumulate postings, again not the original data source. So, the time card is the best choice as the source document among these options.

A source document is the original record that captures the details of a business transaction before anything is posted to the books, providing the evidence and data the system uses to record entries.

Time cards fit this role because they are the origination record for payroll-related data—they document the hours worked, which are then used to calculate wages, payroll taxes, and labor costs. Everything that follows in the accounting process (journal entries, posting to ledgers, and generating trial balances) relies on the data captured at this stage.

Journal entries are the formal records created to reflect transactions after the source data is collected; they’re part of the recording process, not the initial source. A trial balance is a summary listing of ledger balances used to verify accuracy, not a source of transaction data. Ledgers are the organized collections of accounts that accumulate postings, again not the original data source.

So, the time card is the best choice as the source document among these options.