There
 has long been a principle of financial reporting that, in deciding the 
appropriate method to record transactions, economic substance should 
take precedence over legal form. This is the basis of FRS 5 Reporting 
the Substance of Transactions, issued in 1994, to deal with the many 
complex transactions that had developed as a consequence of the 
ingenuity of the financial experts. We discuss FRS 5 in the first part 
of this chapter. A very important example of the substance over form 
principle is to be found in the accounting treatment of leases. Indeed, 
so important is the example that the ASB produced a standard on the 
subject, SSAP 21 Accounting for Leases and Hire Purchase Contracts in 
1984, some ten years before FRS 5 saw the light of day. SSAP 21 
distinguishes between two different categories of lease – finance1 and 
operating leases respectively, and requiresvery different accounting 
treatments of each. A lessee is required to capitalise a finance lease, 
that is to recognise both a fixed asset and a liability, charging 
depreciation of the asset and an interest or finance charge in respect 
of the liability in its profit and loss account. A lessee must not 
capitalise an operating lease, rather the rentals payable should be 
charged to the profit and loss account in accordance with the accruals 
concept. The accounting treatment of leases by the lessor mirrors the 
treatment by the lessee. In the second part of this chapter, we explore 
the issues involved in the treatment of leases and explain the 
provisions of SSAP 21 in some detail. We illustrate the accounting 
treatment of finance and operating leases by both lessees and lessors. 
The provisions of the international standard IAS 17 are similar to those
 of SSAP 21 although there are differences, especially in the treatment 
of the income from finance leases by lessors. 
In
 recent years, the view has emerged, both in the UK and overseas, that 
it is unrealistic to attempt to make a distinction between the two 
categories of leases and that in conceptual terms a strong case could be
 made for requiring the capitalization of all non-cancellable leases. We
 explain this view, which is promulgated in two Discussion Papers issued
 by the G4+1 group, a view that now has strong support from both the ASB
 and the IASB, although it has yet to emerge in the form of an exposure 
draft.