In contrast with operating leases, a finance lease is broadly
treated as if it were a loan. In essence, for accounting
purposes
It is not easy to find a convenient term to describe the element that represents the repayment of the loan. This manual refers to that element as the 'capital' element even though it is part of what are, for tax purposes, revenue receipts. The gross rentals are only split into 'interest' and 'capital' elements in an economic sense.