If you look at the self assessment income tax receipts which include much of the top rate tax collected, you see that over the four years of 50% top rate self assessment income tax came in around £20.5bn a year. This was £2bn or 10% lower than the levels of 2007-8 and 2008-9 when the top rate was 40%
Last year was the first year that self assessment income tax has gone to higher levels, reaching £23.6bn at the 45p top rate. This July saw further strong upwards movement in self assessment income tax, with growth of 17% over July the previous year.
Success in getting more tax revenue in means that so far this financial year the government is making decent progress in getting the deficit down. The public accounts showed a surplus for July, a good month for collecting tax. The amount of borrowing needed so far this financial year is down by £7.3 bn to £24 bn.
The EU has increased the deficit, not just by its own demands on UK finances, but also by requiring a change of accounting to increase the amount of depreciation the government has to charge itself. This has raised the deficit by a further £1.1 billion this year.