Estimating the Return on Investment of Corporate Lobbying

In an earlier post we discussed the lumpy difference between the nominal (40%) and effective (average 16%) corporate tax rates in the US. That effective tax rate is driven by many things, including subsidies, deductions, offshore accounts, and other drivers. A reader suggested we look into how much money that 24% gap is worth and how that might incentivize corporations in their lobbying efforts in Washington.
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