Deficit hawk
Deficit hawk is a political slang term in the English-speaking world for people who place great emphasis on keeping government budgets under control. 'Hawk' can be used to describe someone calling for harsh or pain-inducing measures (alluding to the predatory nature of hawks in the natural world) in many political contexts; in the specific context of deficit reduction, the term is more commonly applied to those advocating for cuts in government spending than to those supporting increases in taxes.