In an update to stakeholders in the mining sector, Biti said Zimra needed to be given statutory powers to ensure there were no diamond leakages.
“I am dealing with a case where at Mbada …Zimra were told to go away,” Biti said.
Biti said he had written a letter to Zimra board chairman complaining about the incident.
He said although the revenue collector was empowered under the Income Tax Act, more needed to be done to improve transparency in diamonds.
Biti said unlike Botswana, Zimbabwe did not have trained valuators to determine the true value of the diamonds. He described Zimra officials at the mines as bodies who were not adding value to the process.
Treasury had received $35,1 million from diamond mining against the target of $169 million. Anjin, had not remitted any funds to Treasury despite being the largest miner operating in the diamond rich fields.
Four companies—Anjin, Mbada, Diamond Mining Corporation and Marange Resources—are mining diamonds in Marange.
Government expects to generate US$600 million from diamond this year. Last year government got US$173,5 million through dividends and royalties remittances.