The MPs and senators earlier lodged a complaint with the Constitution Court, saying Article 27 of the Budget Bill on budget allocations for the Judiciary Office and Administrative Court Office, and Article 28 on budget for the National Anti-Corruption Commission were against Section 168 of the Constitution.
The Constitution Court also agreed to accept a petition by Democrat listed MP Pirapan Salirathavibhaga who said the recent voting on charter amendment, on a clause concerning membership of senators, should be invalid since some MPs unlawfully voted for their colleagues.
Mr Pirapan was required to prepare 312 sets of his petition to be distributed to lawmakers.
A similar petition by senators Somjet Boonthanom and Sai Kangkavekin was rejected by the court.
The senators also asked the court to order an injunction against Prime Minister Yingluck Shinawatra, blocking her from submitting the amended charter on the composition of the Senate to His Majesty the King for royal endorsement. The request was turned down.