Using a narrative account of quarterly discretionary changes in tax liabilities from 1974Q4 to 2018Q2 in a VAR setting, we study whether legislative tax changes affect the trade balance in the United States, Germany, and the United Kingdom. As legislative tax changes we consider (i) all changes, (ii) personal income tax changes, (iii) business tax changes, (iv) indirect tax changes in Germany and the UK, (v) spillovers of US tax changes into Germany and the UK, and (vi) asymmetric reactions after tax hikes and cuts. Generally, we find that after a reduction in aggregated tax liabilities, imports and exports in the US and Germany react quite similarly: imports tend to rise; exports do not change much. Consequently-and fostered by growing output-the net-exports-to-GDP ratio decreases. We find no clear net effect in the UK. Instead, UK imports only increase after cuts to indirect taxes. However, employing normal variations of the tax changes as a yardstick, the economic magnitude of the estimated effects on the trade variables is not particularly large.Thus, there remain doubts as to whether tax policy is an effective instrument for addressing trade imbalances.

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We study the effect of tax policy on stock market returns in the United States, Germany, and the United Kingdom using GARCH models and a unique daily dataset of legislative tax changes during the period 1 December 1978 to 31 January 2018. We find that days of discretionary tax legislation during all stages of the process often matter for returns, both in terms of statistical significance as well as economic relevance. Further disaggregating the tax shocks shows that news about personal income tax cuts affects stock market returns positively, whereas business tax legislation is rarely influential. We find evidence of stock market spillovers, mainly from US tax changes to European stock markets, but, albeit less pronounced, also the other way round. In several cases, we measure significant effects of changes in tax legislation on the days the changes are implemented. The US House Committee Report appears to be the most influential legislative stage in our sample. During the financial crisis, stock markets were more responsive to tax legislation. Finally, S&P500 returns tend to react at earlier legislative stages than do DAX returns, whereas FT30 returns barely react on days of domestic legislative action.

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