With effect from 1st July 2018, the pre-tax deduction proof shall be classified as internal proof and external proof based on the source. Internal proof shall mean the original accounting vouchers prepared by an enterprise for accounting of costs, expenses, losses and other expenditure. Preparation and use of internal proof shall comply with the relevant provisions of accounting laws and regulations of the State. External proof shall mean proof documents for expenditure obtained by an enterprise from other organizations, individuals in the conduct of business activities and other matters, including but not limited to invoices (including hard copy invoices and electronic invoices), government revenue receipts, tax payment proof, collection proof, split receipts etc.
These will reduce the tax burden for the taxpayers.