The general debate has been set for April 3-4 amid a warning that the opposition could face a legal backlash if they bring up issues related to former premier Thaksin Shinawatra.
The debate, which requires no censure vote to be cast under Section 152 of the constitution, is scheduled to take place over two days, according to chief government whip Wisut Chainarun.
He said the opposition is expected to be allocated up to 30 hours for the debate.
The dates were set after the opposition submitted a motion calling for the debate on March 13.
The opposition, led by the Move Forward Party (MFP), is taking the government to task for failing to honour its promise to implement core policies declared in parliament over six months ago.
Mr Wisut hailed the general debate as a method of maintaining accountability. The executive branch is fully prepared to answer all queries without having to assign a team of debaters to mount a defence on the cabinet ministers' behalf. The debate should proceed smoothly if the opposition does not drag parliament outsiders into it, he said.
He was responding to a reporter's question over whether issues related to Thaksin would be raised. The former premier has been assailed by critics for the "privileged" parole he was recently granted by the Ministry of Justice, and how the ministry allowed the convicted former leader to be kept in hospital detention instead of prison prior to his early release.
Earlier, PM Srettha Thavisin insisted Thaksin's discharge complied with the law. Mr Srettha said he did not interfere to secure his early release.
Mr Wisut said there are limits to how far the general debate can go.
He said parliament's rules clearly state that any reference made during the debate to a third person not connected to the targets of debate could be grounds for legal prosecution.
He said that would be unfair to anyone who ended up being mentioned but was not present in the chamber to defend themselves.
However, parliamentary immunity does not cover the act of mentioning a third person during a debate.
"The debater will have to face the music alone, I'm afraid," Mr Wisut said, adding the debate would not be extended beyond the agreed-on time frame.
Meanwhile, parliament has decided to deliberate the budget expenditure bill in its second and third readings from March 20-22.
The bill, whose preparations are behind schedule, is slated for use in the current fiscal year.