Why are you thinking of moving some of your business to the DR - to pay less taxes? If that?s the case, why not consider Ireland where the business taxes are about 10% at a flat rate, or the Czech Republic, which is at about 13%, or to the Cayman Islands which have no income taxes, personal or business?
If you are asking this question because you want to pay your fair share while living here in the DR, then first come down and spend a little more time. Ask around to some other companies who engage in online business activities for foreign clients, and ask them for direction.
Sorry that I cannot be of more service to you. Good luck.