The Effect of Changes in the Value-added Tax Rate on Tax Compliance Behaviour of Small Businesses in South Africa: A Field Experiment

Statistical analysis of the data obtained from the experiment indicated that small business entities are inclined to reduce the VAT liability when there is an increase in the VAT rate, and to do so by overstating purchases rather than under-declaring sales. This leads to an increase in non-compliance. The greater the magnitude of the VAT rate increase, the greater the level of non-compliance. In contrast, no significant relationships were identified between a decrease in the VAT rate and tax compliance.