HC Deb 26 July 1984 vol 64 c756W
Mr. Couchman

asked the Chancellor of the Exchequer if he has any plans to seek powers to allow self-employed persons to offset against tax a proportion of their total social security contribution equal to that paid in the case of an employed person by the employer.

Mr. Moore

The difference between the tax treatment of the social security contributions paid by the self-employed and by employers in respect of their employees reflects the underlying differences. For an employer the contributions are a business expense which can therefore, like other business expenses, be deducted in arriving at his profits liable to tax. By contrast a self-employed person would benefit from his own contributions; they are a personal expense and, like other personal expenses, cannot be deducted in arriving at taxable profits. I have no plans to change this treatment.