In 2004, the first step of a comprehensive tax reform came into force. The general tax credit was increased from EUR 887 to EUR 1 264 and the phasing-out rules were considerably simplified and harmonized for all groups of taxpayers.
The tax reform in 2005 brought a new income tax schedule. Apart from the top rate of 50% for income exceeding EUR 51 000, it shows the average tax rates for two amounts of income. The tax amounts for incomes between these amounts have to be calculated by linear interpolation. The formulas that have to be applied are shown in the tax law. The tax reform included some measures which were made retrospective for 2004. These measures are the increase of the sole earner and the single parent tax credit depending on the number of children (together with a higher earnings limit for the spouse of a single earner) and an increase of the traffic reliefs by about 15%. The maximum deductible amount for church contributions was increased as well. In 2006, the traffic reliefs were again increased by about 10%.
In 2007, the traffic allowances were increased by 10% (effective from 1st July) and the maximum negative tax for employees with traffic allowances was increased from EUR 110 to EUR 240 (for 2008 and 2009). For 2008, the family allowances for the third and subsequent children were increased. In 2008, the unemployment insurance contribution of low‐earning employees was reduced (effective from 1st July). In 2008 up to monthly earnings of EUR 1 100 the rate was zero, for earnings below EUR 1 200 the contribution was 1%, below EUR 1 350 2% and above the current rate of 3%. These income limits are increased according to the increase of the ceiling levels of social security contributions every year.
In September 2008, the parliament decided some measures to compensate for the strong increase of food and energy prices: inter alia, the tax exemption of overtime supplements was increased and the 13th children allowances was introduced.
The tax reform 2009 (effective from 1st January) brought an increase of the zero bracket (from EUR 10 000 to EUR 11 000), a reduction of the income tax rates (except the top rate), an upward shift of the top rate bracket (from EUR 51 000 to EUR 60 000) and several measures for families with children: children allowance (EUR 220 or EUR 132 each parent p.a.), deductibility of cost for child care (up to EUR 2 300 p.a. per child), tax-free payments (up to EUR 500 p.a.) from employers to their employees for child care and an increase of the children tax credit.
Starting with 2013 a progressive rate schedule is applied to Christmas and leave bonus instead of a flat rate regime of 6% (see 1.1.3.)
The tax reform 2016 decreased all marginal tax rates significantly, notably the marginal tax rate of the first tax bracket which was reduced by 11.5 percentage points from 36.5% to 25%. Limited to the years 2016 to 2020 the top marginal tax rate is increased by 5% points to 55% temporarily. These 55% apply to parts of income exceeding EUR 1 million a year.
The tax credit for employees was increased from EUR 345 to EUR 400. The non wastable tax credit (reimbursement of social security contributions) for low earnings was extended. For employees the non wastable tax credit was increased to a maximum of 50% of social security contributions up to a ceiling of EUR 400 a year. For commuters eligible for the commuter tax allowance the maximum amount of the non wastable tax credit is EUR 500. This system of a non wastable tax credit was extended to pensioners too, limited to EUR 110.
Besides the already existing broad financial support for families (payable tax credit and transfers as well as deductibility of cost for child care) the tax reform 2016 increased the tax allowances for children from EUR 220 to EUR 440 per child. If both parents claim for this tax allowance, it increases to EUR 600 (two times EUR 300).
Tax expenditures (tax allowances) for private insurances (e.g. health and pension insurances) and mortgages were abolished for new contracts beginning with 2016. For existing contracts these tax allowances are maintained for a transitional period of five years.