The seven-party opposition insisted on Tuesday that it should receive 20 hours instead of 15 hours for a House debate on the budget bill for the 2020 fiscal year, scheduled to take place on Thursday.
Opposition chief whip Sutin Klangsang said opposition MPs deserved the time to discuss the government's proposed 3.2-trillion-baht spending plan.
"Spending plans have hardly ever been examined over the past five years by the coup-sponsored National Legislative Assembly (NLA)," said Mr Sutin, a Pheu Thai MP for Maha Sarakham.
The coup-sponsored National Legislative Assembly (NLA) reportedly spent about five hours scrutinising the last fiscal budget.
Mr Sutin's remark came after government whips reportedly considered reducing the time allotted for the debate.
FFP leader Thanathorn Juangroong- ruangkit said the party MPs would point out flaws in the budget spending plan and show the public how the party would spend the money on boosting national development.
He claimed that the party's discussions about the budget bill would be constructive and useful to the public.
Under the 1,200-minute quota, Pheu Thai and Future Forward would have 660 minutes and 391 minutes respectively while the other five opposition parties would divide the remaining allotted time depending on the number of MPs they have.
Energy Minister Sontirat Sontijira- wong on Tuesday denied reports that the government was lobbying opposition MPs to vote in favour of the budget bill, saying the MPs would be able to exercise their own judgement in voting on the bill.
Mr Sontirat, secretary-general of the Palang Pracharath Party (PPRP), said the government coalition partners were united in support of the budget bill.
PPRP MPs were scheduled to meet on Tuesday to prepare for the budget debate and the party was allotted three hours for the debate.
Mr Sontirat stressed that the government and opposition whips should hold talks and make sure each side managed their time efficiently, refraining from making unnecessary interjections.
According to Mr Sontirat, it was up to the whips to decide if the budget bill debate would be extended for another day from its two-day schedule.
Natural Resources and Environment Minister Varawut Silpa-archa on Tuesdayexpressed confidence that the budget bill would sail through its first reading, adding that the governing coalition's razor-thin majority should not pose a problem to its passage.