The parties said that the protests will be held at national as well as state level, demanding removal and action against all those involved in corruption and nepotism.
State units of Left parties will take up the regional issues of corruption, like Saradha and other chit fund scams in West Bengal, the parties said.
"Leaders of the six Left parties met today and have taken the decision to hold a country-level anti corruption day, protest against various corruptions, both at Centre and states," CPI(M) General Secretary Sitaram Yechury said.
The Left Front expressed concerns over Union Human Resource Minister Smriti Irani allegedly giving "false educational qualification statement" ahead of Lok Sabha polls and BJP ministers in Maharashtra government allegedly awarding multi-crore contracts without issuing tenders.
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"And till this investigation is over, all ministers, both at Centre and states, should be removed from office and the guilty should be booked," he demanded.
Yechury said the Left parties have also decided to extend their support to the September 2 all-India strike call given by central trade unions over their various demands.
"We have demanded that these cases too be probed under judicial supervision," he said.
The meeting was attended by Sitaram Yechury and Prakash Karat from CPI(M), Sudhakar Reddy and D Raja from CPI, Dipankar Bhattacharya and Swapan Mukherjee from CPI(ML)-Liberation, G Devarajan from AIFB, Satyawan and Pran Sharma from SUCI(C) and Abani Roy from RSP.