Tax on foreign income is a complicated subject. There are two sides to this complex subject. First, if you are domiciled in the UK and living in the UK but have foreign income, you will be taxed on your worldwide income depending on the type of income and the double tax treaty statutes. Remember, not all foreign income is taxable in the UK if the double tax treaty says otherwise. In the second scenario, you live in the UK but will leave at the end of your stay. You may have come here temporarily, or your plans may have changed after arriving in the UK. In this situation, you are resident but non-domiciled. Depending on your circumstances and potential tax savings, you can pay taxes on either an arising or remittance basis. Now if you are not a resident and non-domiciled but have income from UK sources, tax on UK income is treated differently; for example, you have to pay tax on income from property, but you do not pay tax on employment income (check double tax treaty).