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Sars deputy commissioner Ivan Pillay and strategic planner Peter Richer are expected to contest their suspensions in the Johannesburg Labour Court on Wednesday.
Their suspension followed the appointment by Pillay of a panel to investigate allegations about a special projects unit and its alleged illegal activities at Sars.
On Sunday, City Press reported that when Pillay read about the costs of upgrades to President Jacob Zuma's Nkandla homestead, he commissioned legal advice on the tax implications.
The advice he received was that such benefits attract tax, even if a property was built on communal trust land, as was the case with Nkandla.
On Friday the Mail & Guardian reported that a factor that led to Pillay's suspension was his refusal to let a consignment of ANC t-shirts, imported from China, be released by customs without duty being paid.
Sars has been at the center of reports over the last few weeks about an allegedly rogue intelligence unit set up in 2007.
Meanwhile, the Presidency has slammed allegations made by DA leader Helen Zille linking President Jacob Zuma to the suspension of the SARS officials.
Presidential spokesperson, Mac Maharj.
"The Presidency takes strong exception to the allegations read by Premier Helen Zille of the Eastern Cape linking the President to the suspension of SARS staff members. We have noted attempts in some newspapers as well to drag the President into the same matter. The President has nothing to do with any of the allegations and linking him to this matter is pure mischief" he said.