Die Entscheidung über den Verkauf von Wertpapieren unter der Abgeltungssteuer und auf Basis subjektiver Erwartungen

Since January 1, 2009 realized capital gains on securities are taxable in Germany regardless of the investor’s holding period. This paper examines when a rational investor should optimally sell a security in the presence of capital gains taxes. Besides taxes, our analysis considers the relevance of investor’s subjective expectations about future market prices of the security. The results suggest that investors should base divestment decisions primarily on their expectations. To realize losses or to avoid the realization of taxable gains (i.e. the lock-in-effect) is of minor importance for the optimal divestment strategy. This result becomes even more pronounced when transaction costs and limitations to save taxes by realizing losses are considered. Numerical calculations illustrate the results of our analysis.