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Upgrade Tax ID Number to 13 Digit Number?

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Bit of an obscure question:  Has anyone upgraded an old 10 digit tax ID number to the more recent 13 digit number in Bangkok?  I am curious what documents I need and if it was subject to scrutiny regarding back tax withholding on fixed accounts/previously not filing, etc. 

 

I have had a Non-B visa and work permit for 15 years or so through a university I teach part-time for, but have never filed tax payments as no tax would be due (I should have though).  However, the labor department says next year I should include the tax return for renewal of my work permit.  They never asked for it before.   

 

 

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