Just to clarify and have stated this on a number of posts and have been around to my local tax office several times and the old forms 90 and 91 are titled Income tax on Employment Thailand,, yet on line 2 stating pensions.
Most of us are below the various thresholds up to 500 or 560K in any case.
They also stated as you have no employment income in Thailand there is no need to file a form, of which there are none at present for this tax yearl
Too many so-called experts and in any case would not issue a Tin number but have a pink card but means nothing.
We wait until proper communication in English lol comes about!!!