Baroness Neville-Rolfe says the tax system is "creaking under the weight of its own complexity".
How about starting by making self assessment simple enough for the techy guys to work out the tax correctly ? No stupid islands of high marginal rates. No clawback of Child Benefit over a £10000 band. No clawback of personal allowances. If you want a 60% band in the middle of your 40% band, just say that and take it on the chin when folk laugh at you. Don't let people pick and choose how they allocate their personal allowance. Just a few ideas - all they need to do is go through the 1001 exclusions (or errors, as I prefer to call them) for more material.