Internal Trade, Productivity, and Interconnected Industries: A Quantitative Analysis
Does trade within a country affect welfare and productivity? What are the magnitude and consequences of costs to such trade? To answer these questions, we exploit unique Canadian data to measure internal trade costs in a variety of ways -- they are large, and vary across sectors and provinces. To quantify their consequences for welfare and productivity, we use a recent multi-sector trade model featuring rich input-output relationships. We find inter-provincial trade is an important contributor to Canada's GDP and welfare, though there are significant costs to such trade. Reducing inter-provincial trade costs by 10% yields aggregate gains of 0.9%; eliminating our preferred estimates of costs, gains average between 3-7% -- equivalent to real GDP gains between $50-$130 billion. Finally, as policy reforms are often sector-specific, we liberalize sectors one at a time and find gains are largest in highly interconnected industries.
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|Date of revision:||04 Feb 2017|
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