If a company is under SEZ, Is it require to include both special additional duty 4% and also vat 4% in the invoice when we make sale to DTA.
I am not an expert in SEZ. However as per my limited knowledge on this subject, you have to pay SAD of 4% if VAT is exempted. If you have to pay VAT as per VAT rules of your state then SAD is exempted. In short it is either SAD or VAT and not both. Hope this helps.