This paper extends the standard theoretical model of tax enforcement by allowing for the cross-matching of transactions in addition to the auditing of taxpayers. For the Value Added Tax (VAT) the matching of purchase and sales invoices is an important enforcement technique. The paper examines...

This paper proposes a method for evaluating the impact of tax structure changes on tax revenue. The technique consists of decomposing the gap between actual revenue and potential revenue into components attributable to changes in (i) the tax rate structure (ii) deductions and (iii) tax evasion....