If the tax rate were cut to 20%, by how much (both in percentage terms and in absolute dollars) would GDP have to grow just to keep government revenue constant?
0.25(100) = 25 billion
0.2 n = 25
n = 25 x 10 / 2
n = 125
125 / 100 = 25 %
GDP must grow by 25 % to keep government revenue constant.
The general model for the given situation is
t1 GDP1 = t2 GDP2
Where,
GDP1 = pre-tax-cut GDP,
GDP2 = post-tax-cut GDP,
t1 = original tax rate,
t2 = new tax rate
Empirics
The conclusion given by Senator Hannah Coultear about the rate ...