Manila, Nov. 29 -- President Rodrigo Duterte on Thursday called on Congress to adopt his proposed shift to a gross taxation system in the country from the present net tax collection scheme, to curb corruption at the Bureau of Internal Revenue (BIR).

In a chance interview, Duterte renewed his pitch for the computation of corporate taxes based on gross revenue rather than taxable net income, which is the current practice.

He reiterated that his suggested change in the computation of corporate taxes would remove the need for tax examiners.

"I'm challenging Congress now. Relay it to them now that if they want to stop corruption sa (in the) BIR, we adopt the gross instead of the net," he said on the sidelines of an event at Malacanan Palace....