Schalk is the founder and co-owner of Pieterse Sellner Erasmus TRM Tax Attorneys.
As Managing Director, he guides a team of tax attorneys and professionals, and is especially equipped to deal with administrative law and constitutional issues over and above the normal Tax law provisions and statutes.
He is a practising tax attorney who specialises in tax dispute resolution, Tax Board and Tax court representation, tax debt management and negotiations, as well as general tax law advice restructuring based on years of experience.
Schalk is co-authoring a book on the Tax Administration Act with international tax expert, Dr Daniel Erasmus. He also lectures in tax law at the Institute of Tax and Finance and is completing his Doctorate in Tax and Constitutional law at Nelson Mandela University.