This is a comprehensive manual of tax computations illustrating the practical operation of income tax, corporation tax, capital gains tax, inheritances tax and VAT. The index, tables of statutes and alphabetical format enable the reader to find the computation quickly and easily. It may be used independently or in conjunction with "Tolley's Main Tax Annuals", to which sections and chapters correspond. The book is fully updated to include the 1992/93 tax rates (including the new lower rate of income tax) and exemptions, the provisions of both 1992 Finance Acts and other developments. It now includes new and revised computations on IHT business property relief, buildings in enterprise zones, rents between connected persons, "rent a room" relief for individuals taking in lodgers, set off of company losses against franked investment income, CGT on assets jointly owned by husband and wife, and other topics.