How taxes are getting higher?

The Government simply raises them so that they have more money in their coffers. The United States Government is in an extreme deficit, meaning that they are spending much more money than they are actually making, so raising taxes would help compensate for that. There are also other scenariOS which would call for a higher taxation such as; a corrupt avaricious government or giving the citizens of that country more benefits like better/more roads, free healthcare, free entry to cultural facilities ect... ^^