To ask the Chancellor of the Exchequer what is the average individual cumulative gain (a) in cash prices and (b) in 1991–92 prices to those earning (i) £5,000, (ii) £10,000, (iii) £15,000, (iv) £20,000, (v) £25,000, (vi) £30,000, (vii) £40,000, (viii) £50,000, (ix) £60,000, (x) £70,000 and (xi) £100,000, as a result of changes in (1) income tax and (2) income tax and national insurance, giving changes since 1979 and 1987, in the United Kingdom.
[holding answer 2 March 1992]: Latest estimates of the reductions in income tax liability resulting from the changes in tax rates, allowances and thresholds are in the table. The 1978–79 and 1987–88 income tax regimes have been indexed to 1991–92 levels by reference to the statutory formula, and allowing for independent taxation.