It might be more realistic politically to think of providing a 50 per cent subsidy for 400 000 systems. (newscientist.com)
Finally, the value of deductions rises with marginal tax rates, which are higher for those with higher incomes: someone in the bottom tax bracket only gets a 10 - cent subsidy for $ 1 of deductions while someone in the top bracket gets 39.6 cents. (crfb.org)