Under domestic Thai personal income tax rules for Thai tax residents (180 days or more in Thailand) you are liable to pay income tax on any pensions remitted to Thailand. You can use any tax already paid as a credit, but as you mentioned this doesn’t help with Superannuation pensions.
Anything remitted to Thailand is taxed as assessable income. It is not on the capital gains, it is a pension, therefore the pension amount you transfer to Thailand is assessable income in Thailand. You get your Thai allowances and deductions and can also deduct up to THB100,000 off the pension before using the tax tables.


