Iswaran pleaded not guilty to all the charges, saying after his charging last month that he would focus on clearing his name.
He is represented by Senior Counsel Davinder Singh, Mr Navin Thevar, Mr Rajvinder Singh Chahal and Ms Shieffa Safi Shirbeeni.
He resigned from his positions in government two days before being formally charged in court – he had previously been placed on a leave of absence pending an investigation by the Corrupt Practices Investigation Bureau (CPIB).
If convicted of obtaining a valuable thing as a public servant, Iswaran can be jailed for up to two years, fined, or both.
If convicted of corruptly obtaining gratification under the Prevention of Corruption Act, he can be jailed for up to seven years, fined up to S$100,000, or both.
If convicted of obstructing justice, he can be jailed for up to seven years, fined, or both.