You can sell goods with GST purchased without GST. But it is not beneficial for you.How this tax is applied depends on the specific goods or service. When you make a sale, request the buyer's GST number. Businesses will have one, private individuals will not. Sale of a business as a going concern; Cars, car parts and leasing. You don't include GST in the price if your product or service is GST-free. Here's a tax compliance framework for how to approach sales tax in a foreign country if you're selling physical products to its citizens. You can't ask for an invoice that is GST exempt. (b) If you are not GST registered you can only claim the portion that you paid without GST as the deduction.