Modeling R&D spillovers to productivity: The effects of tax credits

How much stimuli that should be attributed to R&D investments crucially depends on how the benefits of R&D reverberate throughout the economy. An extensive literature has found major spillover effects from R&D investments from one industry to another. Using a macroeconomic model for a small open economy, we analyze how tax credits stimulate R&D through the user cost of capital and how it impacts the economy in general via knowledge flows from R&D capital. We find that a tax credit scheme that lowers the user cost of R&D capital, leads to a gradual increase in aggregate productivity. In the long run, the levels of output, real wages, and consumption are around one percent higher than the baseline.publishedVersio

A Two-Stage Bennet Decomposition of the Change in the Weighted Arithmetic Mean

The weighted arithmetic mean is used in a wide variety of applications. An infinite number of possible decompositions of the change in the weighted mean are available, and it is therefore an open question which of the possible decompositions should be applied. In this article, we derive a decomposition of the change in the weighted mean based on a two-stage Bennet decomposition. Our proposed decomposition is easy to employ and interpret, and we show that it satisfies the difference counterpart to the index number time reversal test. We illustrate the framework by decomposing aggregate earnings growth from 2020Q4 to 2021Q4 in Norway and compare it with some of the main decompositions proposed in the literature. We find that the wedge between the identified compositional effects from the proposed two-stage Bennet decomposition and the one-stage Bennet decomposition is substantial, and for some industries, the compositional effects have opposite signs.A Two-Stage Bennet Decomposition of the Change in the Weighted Arithmetic MeanpublishedVersio

Fiscal policy, macroeconomic performance and industry structure in a small open economy

We analyse how fiscal policy affects both the macroeconomy and the industry structure, using a multi-sector macroeconomic model of the Norwegian economy with an inflation targeting monetary policy. Our simulations show that the magnitude of the government spending and labour tax cut multipliers, whether monetary policy is active or passive, is comparable to what is found in the literature. A novel finding from our simulations is that the industry structure is substantially affected by an expansionary fiscal policy, as value added in the non-traded goods sector increases at the expense of value added in the traded goods sector. Moreover, expansionary fiscal policy reduces the mark-ups in the traded goods sector, while the mark-ups are roughly unchanged in the non-traded goods sector. The contraction of activity in the traded goods sector increases when monetary tightening accompanies the fiscal stimulus. Hence, we find that such a policy mix is likely to produce significant de-industrialization in a small open economy with inflation targeting.publishedVersio

The impact of new varieties on aggregate productivity growth*

Although there is an extensive body of literature on aggregate productivity growth, reallocation, and firm turnover, the contribution to overall productivity growth from new firms that produce new varieties is not well understood. In this paper, we propose a framework for aggregating productivity that identifies the contribution from new firms that produce new varieties. Our framework generalizes the frameworks currently used in the literature. To illustrate the decomposition, we analyse the case of firm turnover in Norway. We find that the net creation of new varieties due to firm turnover contributes about half a percentage point to annual aggregate labour productivity growth in the manufacturing sector

Modeling R&D spillovers to productivity: The effects of tax credits

How much stimuli that should be attributed to R&D investments crucially depends on how the benefits of R&D reverberate throughout the economy. An extensive literature has found major spillover effects from R&D investments from one industry to another. Using a macroeconomic model for a small open economy, we analyze how tax credits stimulate R&D through the user cost of capital and how it impacts the economy in general via knowledge flows from R&D capital. We find that a tax credit scheme that lowers the user cost of R&D capital, leads to a gradual increase in aggregate productivity. In the long run, the levels of output, real wages, and consumption are around one percent higher than the baseline