This paper characterises optimal taxation when rates of return are affected by effort, ability, and financial advice. When the government observes wealth and capital income, the optimal marginal tax rate on capital income is positive, whereas the rate on wealth is negative in the baseline model....

This study investigates the impact of dividend taxes on equity mutual fund investments, using the 2018 German Investment Tax Reform as a unique case study. This reform eliminated the foreign tax credit for German fund investors, thereby introducing a new tax planning channel for German equity...