Technical Notes and Manuals

This technical note addresses the following questions: • What are the main ways in which different countries assess and collect personal income tax (PIT) and social insurance contributions (SIC) liabilities (Section I)? • What is the case for transferring responsibility for a country’s SIC collection from its social insurance agency(ies) to its tax authority (Section II)? • What changes does such integration of collection functions involve (Section III)? • Are there any lessons from international experience to guide such reforms (Section IV)? • How to build on these lessons when planning a transfer of collection functions (Section V)? • Are there any beneficial alternatives to full integration of functions (Section VI)?