Value-Added Taxes Make It Easier to Raise Taxes—That's Why Governments Love Them

The value-added tax was first imposed in Europe starting about 50 years ago. Politicians in nations like France approve of this tax because it is generally hidden, so it is relatively easy to periodically raise the rate.
And that’s the reason I am vociferously opposed to the VAT. I don’t think it’s a coincidence that the burden of government spending dramatically increased in Europe once politicians got their hands on a new source of revenue.

Source