[Sidenote: Permanent and Annual Taxes.] Neither the expenditure nor the proceeds of taxes being absolutely constant, it is necessary, in order to maintain a close balance between them, to adjust the sources of revenue to some extent from year to year, and this is done by means of a small number of variable charges. Most of the taxes are imposed by permanent statutes, changed only at long intervals, but the rates of assessment under the tea duty and the income tax are fixed each year in the annual Finance Act; and since 1894 certain additional duties on beer and spirits have also been laid for a year at a time. [Sidenote: Accuracy of the Budget.] It has been the aim of English statesmen to make the revenue and expenditure of each year balance one another as closely as possible, and their skill in doing so has been extraordinary. While the South African War was raging such a result was naturally impossible, but during the preceding twenty-five years the difference between receipts and expenditures (including payments on account of the debt) was never more than about four per cent, and in fifteen of those years it did not exceed one and a half per cent. The taxes are, indeed, of such a character that it is possible to forecast their proceeds with great accuracy. The Chancellor of the Exchequer intends to make his calculations so as to leave a margin of safety, and yet during the period under consideration the difference between the estimated and actual receipts was never more than about three and a half per cent.[119:1] Accurate fiscal administration is very much promoted by the rule that any part of an appropriation unexpended at the end of the financial year in which it is voted shall lapse, and cannot afterwards be used unless it is granted afresh by Parliament.[119:2] The rule has been thought to lead to wastefulness by provoking improvident haste in spending the whole appropriation before March 31.[119:3] But such an evil is surely far smaller than that of allowing the appropriations to run on, with the result, well known in France, for example, that the annual accounts cannot be finally made up, and the extent of the deficit determined, until several years have passed. Like all other excellent things devised by men, the English system of finance is not without its drawbacks. If it promotes careful administration, and rivets attention upon any increase in the budget, it also makes the revenue inelastic in emergencies. A great deal has been said in Parliament of late about broadening the basis of taxation, but that is a very difficult thing to do suddenly, without dislocating the commercial as well as the fiscal system; and while the existing taxes are elastic up to a certain point, an attempt to raise them too much would diminish rather than increase their productiveness. [Sidenote: Method of Getting Money out of the Consolidated Fund.]