The Laffer curve is something about which our friends in the Labour party have criticised us for understanding just a little too well.
We also want to see continued downward pressure on the cost of employing people. That is one of the reasons the SNP proposed in our manifesto to increase the employment allowance from £2,000 to £6,000 per business a year. We cannot do that at present, but we would be able to do so with the devolution of national insurance as part of a package delivering full fiscal autonomy.