We are all familiar with the Laffer curve and the point made by my hon. Friend the Member for North East Somerset (Jacob Rees-Mogg). When taxes were reduced in the late 1970s and the 1980s, revenue increased. There is no economic case whatsoever for having a 50% tax rate. The only case, and I think it is very poor, is a political one. What I am seeking to argue—I do not know why I am seeking to help the Labour party—is that it impresses nobody.
One good point was made in the many interventions we heard from the Opposition side, and from the Government side: why are the Government dragging more people into the higher rate of tax at all? That is a fair point, and it leads me to an argument I have made many times: if we want to improve tax revenues and get more fairness in the tax system, we should move as much as possible towards a flat rate of tax. We have the longest tax code in history. If a Chancellor of the Exchequer on Budget day takes with one hand and gives with the other, and if has his little schemes to help investment or job creation, all he is doing is creating perverse incentives. A much better way of creating a modern, progressive and successful tax system would be to have as flat a rate of tax as possible, as is being done increasingly around the world. It is ridiculous that a deputy head teacher of a primary school, for example, has to pay a higher rate of tax. I think that shows some of the problems the country is in economically.
I do not want to repeat all the old arguments about who got us into this mess, but perhaps I will be forgiven for saying that unfortunately we have to pay our way, and the Government are therefore between a rock and a hard place. It is absurd to be dragging more people into higher rates of tax; what we should be trying to do,
across the House, is to flatten the tax base and make it much simpler, much more coherent and much more understandable, so that people know that there is, to all intents and purposes, a single rate of tax. It does not matter whether they earn £30,000, £300,000 or even £3 million a year—they will be paying 35% of it in income tax. If we had such a modern tax system, it would generate a huge surge in productivity. The only people who suffered would be the chartered accountants, thousands of whom might lose their jobs; I pity the chartered accountants. I want to try to generate a modern, progressive tax system where people know that as they work harder they can increase the money coming into their family. If we are going to have a sensible debate as opposed to one based on party politics, these are the sorts of arguments that we should making. It is sad that we do not have the courage to do so.
4.45 pm