If you decide to come to live in Portugal then you will probably ask the question of the registration of your foreign vehicle. Portugal protects its domestic market and imposes very high import taxes : some expats have to pay of up to 5 digits. In some cases you can apply to be exempt from tax but these are not clear according to the sources. Some people say 6 months, some people say 12 months, some people are talking about old cars or brand new one : let Lisbob analyse the situation. Do I have to pay the ISV tax to legalize my foreign vehicle in Portugal ? Lisbob, the Expats Assistant in Lisbon and Portugal has created a free tool to check if you can benefit from the ISV tax exemption.