what is vouching
Vouching is a technical term, which refers to the inspection of documentary evidence supporting and substantiating a transaction, by an auditor. It is the essence of Auditing.
Vouching is the essence or backbone of auditing because when performing an audit, an auditor must have proof of all transactions. Without the proof provided by vouching, the claims provided by the auditor are just that, only claims. In most cases, hard to detect frauds can only be discovered through the use of vouching.