Voucher statutory requirement or not

There is nothing "statutory" about a voucher and its supporting documents. A payment voucher is made to propse and authorise a proper paymemht for an incurred expenditure. The supportings will prove the nature of the payment, to whom it should/has been paid and also whether the amount paid tallies with the amount incurred. A voucher and its supportings will establish the existence of a good internal control process for a payment.

The audit effect of Abscence of a voucher and/or its supportings will have to veiwed on a case to case basis, depending on the nature, size etc of the payment. It also depends on the Internal control levels which are supposed to be in place in the organisation.

Based on what crieteria lack of Voucher/Supportings attract disallowance under Income Tax Act.