The revenue service says it's serious about clamping down on illicit financial flows in certain sectors.
SARS is tackling the clothing and textile, leather, tobacco and fuel sectors.
It is working closely with the National Prosecuting Authority and the Special Investigating Unit to bring criminals to book.
“We’ve identified 17 projects of almost 800 individual cases to our assessment has a duty compromise of close to R30bn. Within that there’s about R2.6bn that we’ve identified and in the process of recovering," said SARS Commissioner Edward Kieswetter.
It says there's been an uptick in criminals targeting its officials, because of the crackdown.
Laptops and confidential information have been stolen.