Johannesburg - IEC chairperson Pansy Tlakula
will file formal submissions to the Electoral Court on Friday following an application by opposition parties that want her to resign, her lawyer said.
"We will make formal submissions today [Friday]," Leslie Mkhabela said.
The Electoral Court is expected to sit for the application in Johannesburg on Tuesday.
The parties calling for Tlakula's resignation are the United Democratic Movement, the African Christian Democratic Party, the Congress of the People, Agang SA, and the Economic Freedom Fighters.
This follows a forensic investigation by the National Treasury on the procurement of the Electoral Commission of SA's (IEC) Riverside Office Park building in Centurion, Pretoria.
The probe found the process was not fair, transparent, nor cost-effective. It found Tlakula did not give guidance or formally inform various people what was expected of them in the process.
Tlakula has maintained that she was not accused of corruption in the report.
The Treasury's report followed a recommendation by Public Protector Thuli Madonsela
in her own report into the matter, released in August 2013.
According to The New Age, Tlakula sent a letter to the court on Thursday in the hope that she would not have to go to court on Tuesday, which was 10 days before the election.
In the letter, Tlakula reportedly said the IEC would not be able to manage the 7 May elections without her.