The proposal, put forward by the Federation of Thai Capital Market Organisations (FETCO), will result in the SEF replacing the LTF at the start of next year.
The SEF will allow investors to deduct up to 30 per cent of their total annual income from the fund - compared with the 15 per cent allowance under the LTF - for investments under Bt250,000.
Moreover, the SEF will also require that investors spend a proportion of their capital on sustainable equities such as the Thailand Future Fund and equities that are environmentally friendly.
In this way, SEF will be able to draw in more investors and, at the same time, promote sustainable investments, FETCO chairman Paiboon Nalinthrangkurn said.