The Hungarian government has proposed to raise the top level of the controversial new ad tax from 40% to 50%.

According to Portfolio, the highest rate would apply to revenues of over HUF20 billion (€65 million) and therefore only affect RTL, whose sales in 2013 amounted to HUF23.5 billion.

In effect, the broadcaster would be required to pay an additional HUF350 million in tax on last year’s earnings.

The new ad tax has been strongly opposed by RTL, Hungary’s leading broadcaster.

Last month RTL Group filed an official complaint about the tax with the European Commission.