BNP and Jatiya Jatiya Samajtantrik Dal (Rob) on Sunday agreed to forge national unity to wage a simultaneous movement to oust the government.
The talks between the parties were held at JSD President ASM Abdur Rob's Uttara residence in the capital.
BNP Secretary General Mirza Fakhrul Islam Alamgir and Rob led their delegations at the meeting.
"We've reached a consensus to oust the current regime through a united movement by forging national unity. We also won't participate in any election under the Awami League government," Fakhrul told the reporters after the meeting.
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He said they also agreed to work together to ensure that the national election is acceptable by defeating the current government.
Apart from waging a movement for a credible election, the BNP leader said they will also work together to materialise the dreams of the freedom fighters and the Liberation War by bringing a radical change in the country and its governing system.