In the case of ireland:
a) the tax rate dropped from 30% in 1999, dropped to 12% by 2003 and has stayed there since then
b) The government spending increased from 5,000 million in 1999 and reached a top amount of 7500 millions by 2009, and declined to 6,500 by 2012
c) The gdp per capita rose from 36000 in 1999 to 48000 in 2008 then dropped to 42000 by 2011.
e) Employment was 1.6 million by 1999 rose to almost 2.2 million by 2008 then dropped to 1.8 by 2011 and is actually 1.9 million , way below pre-crisis employment.
Arguably, there is not much to be cut regarding the corporate tax rate ( 0% is still possible, but probably would not have the same effect as cutting from 30 to 12 and would significantly decrease government revenue ). Also Jobs have not been recovered in spite of the low corporate rate and the reduction of government spending by 1,000 millions.
Ireland Government Spending 1997-2015 Data Chart Calendar