Is it necessary to show a tax clearance certificate at the airport when leaving the country permanently? I don't actually owe any tax as I haven't earnt over $100,000. I'm reluctant to go through the correct process in obtaining any documentation because I left my employer some time ago so there is no question of them withholding any income. They are also unlikely to help me because things were not done properly - working for months before my work visa came through etc. Does anyone know if you are required to show a tax clearance certificate at the airport? Many thanks.