Income tax is payable on both earned and unearned income.
Taxable income includes salaries, pensions, property, ‘visible signs of wealth’ (e.g. a car), property and investment income (dividends and interest), and income from professional, artistic, business or agricultural activities.
Before you’re liable for income tax, you can deduct social security payments and certain costs from your gross income (allowances) and from the sum due after establishing your tax base (deductions). Most allowances and deductions apply only to residents and include the following: