Deputy Prime Minister and Commerce Minister Jurin Laksanawisit chaired the meeting and said the resolution would soon be forwarded for approval to the Cabinet.
Some 2 million Thai citizens with special needs are expected to benefit from the allowance hike.
Budgetary allocation is expected to increase by Bt4.8 billion a year, which needs to be injected in the middle of 2020 or the beginning of 2021.