Over 2 million + professionals use CFI to learn accounting, financial analysis, modeling and more. Unlock the essentials of corporate finance with our free resources and get an exclusive sneak peek at the first module of each course.
Start Free
What are Source Documents?
Every time a business is involved in a financial transaction, a paper trail is generated. This paper trail is referred to in accounting as source documents. Whether checks are written to be paid out, sales are made to generate receipts, billing invoices are sent by suppliers, or work hours are recorded on an employee’s timesheet – all the respective documents are source documents.
Importance of Source Documents
Source documents are, first and foremost, important to the bookkeeping and accounting process because they serve as physical evidence that a financial transaction actually occurred. Nowadays, these documents do not necessarily need to be a physical hard copy – they may be in a traceable electronic form.
In addition, source documents are also essential in the auditing process. When companies undergo an audit, the auditor’s access to a clear and accessible paper trail of all transactions enhances the overall legitimacy and independence of the audit. In order to reaffirm the accuracy of the company’s balances in individual accounts, auditors need full access to all the documents. Overall, to run a business more smoothly and enhance transparency, all its source documents should be kept and stored for future reference.
Common Types of Source Documents
In its simplest form, a source document generally contains the following information:
Any information generated through source documents should be properly recorded in either the company’s journal, accounting software, or financial books. After the initial recording, all documents should be preserved and organized into a file and put into a system so they can be retrieved at any time. It is also important to make a record of general internal control procedures specifying who in the firm can access and authorize payments, orders, and other transactions.
Originality of Source Documents
In the majority of cases, photocopies of source documents are legally permissible. According to the US Internal Review Service (IRS), as long as these photocopies are complete, legible, and accurate representations of the original document, they are legally acceptable.
Similarly, the Canadian Revenue Agency (CRA) accepts scanned documents as long as the records are produced and retained in paper format or stored in an electronically accessible and readable format. Although organizing and filing these documents can be tedious, putting in the extra time to properly maintain a paper trail and create an easy way to access these documents can result in huge time savings in the future and also ensure greater transparency.
Take your learning and productivity to the next level with our Premium Templates.
Upgrading to a paid membership gives you access to our extensive collection of plug-and-play Templates designed to power your performance—as well as CFI's full course catalog and accredited Certification Programs.
Gain unlimited access to more than 250 productivity Templates, CFI's full course catalog and accredited Certification Programs, hundreds of resources, expert reviews and support, the chance to work with real-world finance and research tools, and more.