I carry on business outside of Thailand through a company which is a resident of a country which as no double tax treaty (DTT) with Thailand and I am deemed resident for tax purposes in Thailand since I am here more than 183 calendar days per year.

It is my understanding that I have to pay taxes on the money I bring into Thailand and im not allowed a tax credit since there's no DTT. Since this is no employment income - am I allowed to benefit from the automatic 10%-85% (70% in my case) write-off? ANy of you have first hand experience with a similar situation? Thanks!

Hmmm....the Thai tax system is really not set up for taxing overseas income when you are not working in Thailand or for a Thai employer. (I am aware of the 183 day rule though).

I can see the conversation now:

You: "Hi I am here more than 1/2 the year, where do I pay my tax?"

Clerk: "ehh..company should withhold and pay to us - what is your employers or company's Thai tax number and do you work in Thailand?"

You: "don't work here and biz/company not in Thailand"

Clerk: "get lost!"

Cheers!