In Latvia, taxes are levied by both national and local governments. Tax revenue stood at 28.1% of the GDP in 2013. The most important revenue sources include income tax, social security, corporate tax and value added tax, which are all applied on the national level. Income taxes are levied at a flat rate of 23% on all income. A long range of tax allowances is given including a standard allowance of €900 per year and €1980 per year for every dependent.