R&D capital and economic growth: The empirical evidence

This paper reviews the empirical literature on rates of return on R&D and interprets the economic significance of these estimates using a semi-endogenous growth model with a calibrated knowledge production sector. We analyse how R&D subsidies, a reduction of entry barriers for start-ups and increasing high-skilled labour would contribute towards raising productivity and knowledge investment in the EU. The simulation results show that substantial efforts will have to be made if Europe wants to come close to achieving the Lisbon productivity and knowledge-investment targets. Achieving US standards in all three areas would reduce the productivity gap by about 50 percent. Improving the quality of tertiary education and increasing competition in non-manufacturing sectors would also help the EU to get to the productivity frontier.Productivity differences; endogenous growth; R&D; DSGE models

R&D capital and economic growth: The empirical evidence

This paper reviews the empirical literature on rates of return on R&D and interprets the economic significance of these estimates using a semi-endogenous growth model with a calibrated knowledge production sector. We analyse how R&D subsidies, a reduction of entry barriers for start-ups and increasing high-skilled labour would contribute towards raising productivity and knowledge investment in the EU. The simulation results show that substantial efforts will have to be made if Europe wants to come close to achieving the Lisbon productivity and knowledge-investment targets. Achieving US standards in all three areas would reduce the productivity gap by about 50 percent. Improving the quality of tertiary education and increasing competition in non-manufacturing sectors would also help the EU to get to the productivity frontier

Long-term labour productivity and GDP projections for the EU25 Member States : a production function framework

This paper presents the results of long run labour productivity and GDP growth rate projections (until 2050) for each of the 25 EU Member States and provides a detailed overview of the forecast methodology used. These projections were undertaken in order to provide an internationally comparable macroeconomic framework against which to assess the potential economic and fiscal effects of ageing populations. The projections presented in this paper, using a common production function methodology for all 25 countries, show the GDP growth rate effects of an assumptions-driven extrapolation of recent trends in employment and labour productivity. These base case projections reflect the working assumption of “no policy change”.Various sensitivity tests are carried out to check the GDP per capita impact of some factors which have been excluded from the baseline scenario for reasons of simplicity or because of a lack of consensus in the academic literature. Some of the interesting conclusions that emerge from these sensitivity tests include : • Firstly, the GDP per capita impact of changes in the participation rate assumption used in the projections is much greater than for assumed changes in the share of part-time employment (i.e. in average hours worked per worker). • Secondly, the negative effect of a change in the age-structure of the population is fairly limited, although it is accepted that the labour productivity of an individual is likely to decline after the age of 55. A very strong fall in the productivity of older workers compared with that of prime-age workers would be required to significantly depress total labour productivity. Such an outcome, on the basis of current evidence, appears rather unlikely. • Thirdly, changing the TFP growth rate targets (e.g. use of the 1990’s average instead of the long-term 1970-2004 average) could strongly affect the projections. • Finally, an assumption of productivity convergence in levels substantially alters the projections for most EU10 countries but leaves the EU15 almost unchanged. JEL classificProductivity; ageing; long-term projections; production function; labour productivity; older workers

Temporary VAT reduction during the lockdown

This paper evaluates the temporary VAT reduction introduced by the German government over the 3Q2020:4Q2020 as a controversial part of the COVID-19 stimulus package. Critics argue that VAT reductions are ineffective because of limited pass-through to consumer prices and during lockdown. Advocates emphasize positive effects on durable goods and stress that a VAT reduction can partly substitute for a limited monetary policy response under the zero lower bound (ZLB). Thus, the VAT policy experiment of a sizable two-quarter VAT reduction allows studying the effects and transmissions channels of VAT measures. We extend a dynamic stochastic equilibrium (DSGE) model to address a durable goods channel and a limited VAT pass-through and distinguish between sectors directly and indirectly affected by the lockdown. We trace lockdown and fiscal shocks and analyze the impact of the VAT reduction in conjunction with the lockdowns in 2020-2021 in Germany. We use nonlinear solution techniques to solve the model in the presence of a ZLB, forced savings and a partial lockdown constraint. Although the lockdown restriction reduces the effectiveness of a temporary VAT reduction, we find a short-term multiplier of 1.8. However, the cumulative multiplier reduces to below 1 over the medium term due to a shift in durable goods consumption toward 2020. Thus, the temporary VAT reduction is an effective instrument for short-term stabilization during the partial lockdown, but fiscal costs appear in the medium term.This (updated) version: May 202

Durable consumption, limited VAT pass-through and stabilization effects of temporary VAT changes

This paper revives the question of whether a temporary VAT change is an adequate instrument for crisis stabilization. In empirical assessments, we find that durable goods consumption fluctuates strongly over the business cycle and that VAT rate changes affect durable goods in particular. Therefore, we build a dynamic stochastic general equilibrium (DSGE) model that is capable of addressing this major channel through which temporary VAT changes affect the economy. Furthermore, we allow for an imperfect pass-through of VAT measures to consumer prices via VAT-specific price adjustment costs. We compare the general VAT policy in the crisis with alternative stabilization policies, such as interest rate cuts, spending policies and a VAT cut only for durable goods. First, we find that considering durable goods in the model generates sizeable stabilization effects of VAT changes on consumption over a broad set of parameter ranges. Second, we find that the VAT policy can mimic monetary policy with minor exceptions. Third, the VAT rate cut has the highest short-term multiplier compared with government spending policies, but not in the medium-term. Fourth, a VAT rate reduction only on durable goods will generate strong GDP effects and even be self-financing in the first year. In contrast, a VAT reduction only on non-durables has small effects on GDP and is not self-financing. In view of our results, we conclude that a temporary VAT cut, when applied to durable goods, is an effective stabilization instrument

Rising allowances, rising rates: A Tinbergen rule for capital taxation

The system of capital taxation consists of two instruments, namely a tax on profits and a depreciation allowance on investment. We will show in this paper that by acting on both instruments simultaneously it is possible to achieve both a growth and a fiscal net revenue target even in cases when a trade off prevails when each instrument is used individually. This is an application of the Tinbergen rule (Tinbergen 1952) to capital taxation. In the current context a fundamental requirement for this rule to work is that the two tax instruments imply different trade offs. As will be shown in the paper, depreciation allowances have a more favorable trade off between growth and net revenue in the long run compared to statutory profit tax rates. Thus, by increasing depreciation allowances and the statutory tax rate at the same time it is possible to both increase growth and fiscal space. In a model simulation calibrated to the German economy and tax system an increase of the tax depreciation rate for all investments from 10% to 25% leads to more than 2 percent GDP increase and more than 6 percent higher private investments in total. Whereas GDP and investment rise steadily over time, the government budget becomes negative in the short run. In the long run the sign of the fiscal budget effect is determined by the assumption about indexation of government consumption to GDP. However, according to the Tinbergen rule for capital taxation slight adjustments of the capital tax rate could balance out these deficits and generate additional fiscal space

Temporary VAT Reduction during the Lockdown - Evidence from Germany

This paper evaluates the temporary VAT reduction invoked by the German government over the third and fourth quarter of 2020 as part of the COVID-19 stimulus package. There is considerable controversy. Critics argue that VAT reductions are ineffective in the presence of lockdown measures in place and because of limited pass-through of temporary measures into consumer prices. Advocates emphasize positive effects on durables and stress that these measures can at least partly substitute for a limited monetary policy response under the ZLB. This paper sets up a DSGE model which is capable to address these issues. Our model distinguishes between sectors directly and indirectly affected by the lockdown. This allows us to trace economic spillovers of lockdown measures to the rest of the economy and the differentiated impact of VAT measures on the two sectors. We disaggregate consumption into durables and non-durables for both financially constrained and unconstrained households and we allow for imperfect pass-through of VAT measures into consumer prices, by noticing that the standard price setting model with convex cost of adjustment, makes strong predictions about magnitude and speed in which retailers are adjusting consumer prices to VAT shocks. We analyse the impact of the VAT in conjunction with the two lockdown shocks in 2020 Q2 to Q4. We use non-linear solution techniques to solve the model in the presence of a ZLB and a lockdown constraint and we carefully take into account the information set available for the private sector in each quarter on current and future policy measures. We find sizeable effects of VAT measures on consumption (esp. durables) with a multiplier larger than one on GDP and can match well the main macroeconomic aggregates over that period