The paper is an expert opinion, prepared for a hearing of Germany’s Federal Commission I (Bundesstaatskommission I), which proposed constitutional changes regarding fiscal federalism and taxes.

Monetary policy is superneutral in an overlapping generations model. Previous authors have argued that superneutrality does not hold in such a setting. However, the standard results rely on the counter-factual premise of helicopter money and are overturned if money creation through open market...

Japan has been in a benign liquidity trap since 1990. In a benign liquidity trap, interest rates approach zero, prices decline, and monetary policy is ineffective but output and employment perform decently. Such a pattern contradicts traditional macro theories. This paper introduces a monetary...

This paper makes a fresh attempt at characterizing optimal commodity taxes. Under the usual assumptions, an extremely simple expression of second-best commodity taxes is derived, showing tax rates as functions of observable variables only, rather than as functions of unobservable variables such...

The rational prodigality argument, which often serves to justify social security, is considered in a second-best tax framework with endogenous labor supply. Rational prodigality renders the familiar policies time inconsistent. We analyze time consistent policies and show that a wage tax suffices...

According to a widely held belief, ?all who are able to work, should work?. We consider this statement within a framework of non-linear taxation. The crucial difference between our model and the standard model is that the government can distinguish between productive persons and the disabled. A...

This paper makes a fresh attempt at characterizing optimal commodity taxes. Under the usual assumptions, an extremely simple expression of second-best commodity taxes is derived, showing tax rates as functions of observable variables only, rather than as functions of unobservable variables such...

Effective from 2008, Germany´s top marginal income tax rate rises from 42 to 45 der cent. However, sole proprietorships and partnerships can opt for a preferential tax rate of 28,25 per cent for retained profits (§34a EStG-E). If they do so, profits are taxed again upon distribution. Using...

Niedrige oder sogar negative Realzinsen bestimmen seit Beginn der Krise die Kapitalmärkte in der Eurozone. Davon profitieren vor allem die Staatshaushalte in Ländern mit hoher öffentlicher Neuverschuldung. Sparer haben demgegenüber Schwierigkeiten, ihr Kapital rentierlich anzulegen. Die...