HC Deb 23 May 1980 vol 985 c471W
Sir Brandon Rhys Williams

asked the Chancellor of the Exchequer how many taxpayers derived benefit from the concession allowing mortgage interest on their homes to be a deduction for tax in 1979–80; and what was the resulting gain to the taxpayer's net income in the average case.

Mr. Peter Rees

[pursuant to his reply, 20 May 1980, c. 133]: About 54 million taxpayers, counting a married couple as one benefited. The estimated average gain was about £270.