there is an upper limit(cap) in the tax, per month, max 700 HUF (2.2 EUR) for population and max 5000 HUF (16.3 EUR) for companies. This text is hidden in the proposal. Just media is not reading it with attention.
Nope, it isn't. The proposal (http://itcafe.hu/dl/cnt/2014-10/112746/01705.pdf) only contains the number '700' twice, one is unrelated, at the other occurrence the text says that the tax on phone calls and text messages cannot exceed HUF 700/mo/subscription.
After the outrage now there're rumors about these caps, but they were not part of the proposal.