you may want to ask people who come from your same country, an accountant from your home country, or your local emabassy to see if your income in a foreign country is taxable at home. it's not taxable by qatar. for example, canadians are subject to taxes in canada on all earned foreign income in the year it is earned, unless you can get non-residence status. I understand americans are taxed on all foreign income regardless of place of residency. it can get very complicated, but the short version of a long story is that you want to figure this out before returning home, preferably before leaving home, so that you are not presented with a tax bill based on foreign income when you get home.