Thailand BOI application form includes the address of your business/factory. If at the time of applying for BOI, you are not sure about the location of your business or factory, at least you have to put a province. You do not need to put the exact address yet. When your project is approved by the BOI committee and before or after obtaining the BOI certificate, you will still be able to change the province or the exact location of your business. The details of actual location should be specified as much as possible because it affects the benefits and conditions given to you in the BOI certificate. The certificate as well as the benefits and conditions will be amended in accordance with the province or zone where the project is finally located.