Econometric Tools for Macroeconomic Forecasting and Simulation
This research group advances the development and application of quantitative macroeconometric models to improve the accuracy, transparency, and policy relevance of macroeconomic forecasts and simulations. Its work supports the empirical and methodological foundation of the IWH’s forecasting activities and policy recommendations.
The group focuses on both short-term forecasting and simulation-based assessments of long-term economic developments, with particular attention to the interactions between economic activity and the environment. Key areas of expertise include reduced-form models for short-term forecasting, regional disaggregation of macroeconomic trends, structural forecasting techniques, and Dynamic Stochastic General Equilibrium (DSGE) models for scenario analysis.
In addition to its core research, the group develops customized forecasting tools and conducts applied analyses in third-party funded projects. Recent collaborations include model development for Volkswagen Bank, economic ministries in Central Asia (supported by GIZ), the German Environment Agency (UBA), and the EU Horizon 2020 project ENTRANCES, which addresses clean energy transitions in European regions.
By integrating rigorous econometric methods with practical applications, the group contributes to a better understanding of macroeconomic dynamics and enhances the basis for evidence-based policy decisions at national and international levels.
Research Cluster
Economic Dynamics and StabilityYour contact

- Department Macroeconomics
EXTERNAL FUNDING
07.2022 ‐ 12.2026
Evaluation of the InvKG and the federal STARK programme
German Federal Ministry for Economic Affairs and Climate Action
On behalf of the Federal Ministry of Economics and Climate Protection, the IWH and the RWI are evaluating the use of the approximately 40 billion euros the federal government is providing to support the coal phase-out regions..
12.2024 ‐ 02.2026
Macroeconomic Modelling for Energy Investments in Vietnam
Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH
08.2024 ‐ 03.2025
Strengthening Public Financial Management in Vietnam
Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH
01.2023 ‐ 12.2023
Early determination of stable results for gross domestic product or real economic growth and gross value added at federal state level
Landesbetrieb Information und Technik Nordrhein-Westfalen
The project examines whether the accuracy of the first estimate of gross value added and gross domestic product for the federal states can be increased, thereby reducing the extent of subsequent revisions.
01.2018 ‐ 12.2023
EuropeAid (EU Framework Contract)
Europäische Kommission
05.2020 ‐ 09.2023
ENTRANCES: Energy Transitions from Coal and Carbon: Effects on Societies
Europäische Kommission
ENTRANCES aims at examining the effects of the coal phase-out in Europe. How does the phase-out transform society – and what can politics do about it?
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 883947.
10.2019 ‐ 01.2023
Climate Resilient Economic Development
Climate change has a substantial impact on economic growth and a country’s development. This increases the need for reliable and viable approaches to assessing the impact of climate risks and potential adaptation scenarios. Political decision-makers in ministries of planning and economy need sound forecasts in order to design and finance adequate economic policy instruments and actively to take countermeasures. In the pilot countries (Georgia, Kazakhstan and Vietnam), climate risk is included in macroeconomic modelling, enabling the results to be integrated into the policy process so as to facilitate adapted economic planning. The IWH team is responsible for macroeconomic modelling in Vietnam.
07.2016 ‐ 12.2018
Climate Protection and Coal Phaseout: Political Strategies and Measures up to 2030 and beyond
01.2017 ‐ 12.2017
Support to Sustainable Economic Development in Selected Regions of Uzbekistan
01.2017 ‐ 12.2017
Short-term Macroeconomic Forecasting Model in Ministry of Economic Development and Trade of Ukraine
01.2016 ‐ 12.2017
Development of analytical tools based on Input-Output table
The aim of the project was the development of an analytical tool to assess the gains and losses of possible state programs supporting the development of the private sector of the Tajik economy.
11.2015 ‐ 12.2016
Employment and Development in the Republic of Uzbekistan
Support to sustainable economic development in selected regions of Uzbekistan
05.2016 ‐ 05.2016
Framework and Finance for Private Sector Development in Tajikistan
02.2016 ‐ 04.2016
Macroeconomic Reforms and Green Growth - Assessment of economic modelling capacity in Vietnam
10.2015 ‐ 03.2016
Improved Evidence-based Policy Making - GIZ Tadschikistan
Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH
Refereed Publications

Expectations, Infections, and Economic Activity
in: Journal of Political Economy, No. 8, 2024
Abstract
The Covid epidemic had a large impact on economic activity. In contrast, the dramatic decline in mortality from infectious diseases over the past 120 years had a small economic impact. We argue that people's response to successive Covid waves helps reconcile these two findings. Our analysis uses a unique administrative data set with anonymized monthly expenditures at the individual level that covers the first three Covid waves. Consumer expenditures fell by about the same amount in the first and third waves, even though the risk of getting infected was larger in the third wave. We find that people had pessimistic prior beliefs about the case-fatality rates that converged over time to the true case-fatality rates. Using a model where Covid is endemic, we show that the impact of Covid is small when people know the true case-fatality rate but large when people have empirically-plausible pessimistic prior beliefs about the case-fatality rate. These results reconcile the large economic impact of Covid with the small effect of the secular decline in mortality from infectious diseases estimated in the literature.

Understanding Post-Covid Inflation Dynamics
in: Journal of Monetary Economics, November 2023
Abstract
We propose a macroeconomic model with a nonlinear Phillips curve that has a flat slope when inflationary pressures are subdued and steepens when inflationary pressures are elevated. The nonlinear Phillips curve in our model arises due to a quasi-kinked demand schedule for goods produced by firms. Our model can jointly account for the modest decline in inflation during the Great Recession and the surge in inflation during the post-COVID period. Because our model implies a stronger transmission of shocks when inflation is high, it generates conditional heteroskedasticity in inflation and inflation risk. Hence, our model can generate more sizeable inflation surges due to cost-push and demand shocks than a standard linearized model. Finally, our model implies that the central bank faces a more severe trade-off between inflation and output stabilization when inflation is elevated.

Conditional Macroeconomic Survey Forecasts: Revisions and Errors
in: Journal of International Money and Finance, November 2023
Abstract
Using data from the European Central Bank's Survey of Professional Forecasters and ECB/Eurosystem staff projections, we analyze the role of ex-ante conditioning variables for macroeconomic forecasts. In particular, we test to which extent the updating and ex-post performance of predictions for inflation, real GDP growth and unemployment are related to beliefs about future oil prices, exchange rates, interest rates and wage growth. While oil price and exchange rate predictions are updated more frequently than macroeconomic forecasts, the opposite is true for interest rate and wage growth expectations. Beliefs about future inflation are closely associated with oil price expectations, whereas expected interest rates are related to predictions of output growth and unemployment. Exchange rate predictions also matter for macroeconomic forecasts, albeit less so than the other variables. With regard to forecast errors, wage growth and GDP growth closely comove, but only during the period when interest rates are at the effective zero lower bound.

Comment on “Optimal monetary policy in an estimated SIR model by G. Benmir, I. Jaccard, and G. Vermandel”
in: European Economic Review, September 2023
Abstract
<p>Benmir, Jaccard, and Vermandel (2023, BJV) seek to answer the following set of topical and important research questions: (i) How should monetary policy be conducted during a pandemic?, (ii) How do health considerations affect the conduct of monetary policy?, and (iii) How does the presence of contagion risk affect the main building blocks of the New Keynesian model?</p>

Evidence-based Support for Adaptation Policies in Emerging Economies
in: Low Carbon Economy, No. 1, 2023
Abstract
Climate change is increasingly evident, and the design of effective climate adaptation policies is important for regional and sectoral economic growth. We propose different modelling approaches to quantify the socio-economic impacts of climate change on three vulnerable countries (Kazakhstan, Georgia, and Vietnam) and design specific adaptations. We use a Dynamic General Equilibrium (DGE) model for Vietnam and an economy-energy-emission (E3) model for the other two countries. Our simulations until 2050 show that selected adaptation measures, in particular in the agricultural sector, have positive implications for GDP. However, some adaptation measures can even increase greenhouse gas emissions. Focusing on GDP alone can lead to welfare-reducing policy decisions.
Working Papers

Progressive Tax-like Effects of Inflation: Fact or Myth? The U.S. Post-war Experience
in: IWH Discussion Papers, No. 33, 2017
Abstract
Inflation and earnings growth can push some tax payers into higher brackets in the absence of inflation-indexed schedules. Moreover, inflation may affect the composition of individuals’ income sources. As a result, depending on the relative tax burden of labour and capital, inflation may decrease or increase the difference between before-tax and after-tax income. However, whether some and if so which percentiles of the income distribution net benefit from inflation via taxation is a widely unexplored question. We make use of a novel dataset on U.S. pre-tax and post-tax income distribution series provided by Pike ty et al. (2018) for the years 1962 to 2014 to answer this question. To this end, we estimate local projections to quantify dynamic effects. We find that inflation shocks increase progressivity of taxation not only contemporaneously but also with some repercussion of several years after the shock. While particularly the bottom two quintiles gain in share, it is not the top but the fourth quintile that lastingly loses.

Outperforming IMF Forecasts by the Use of Leading Indicators
in: IWH Discussion Papers, No. 4, 2014
Abstract
This study analyzes the performance of the IMF World Economic Outlook forecasts for world output and the aggregates of both the advanced economies and the emerging and developing economies. With a focus on the forecast for the current and the next year, we examine whether IMF forecasts can be improved by using leading indicators with monthly updates. Using a real-time dataset for GDP and for the indicators we find that some simple single-indicator forecasts on the basis of data that are available at higher frequency can significantly outperform the IMF forecasts if the publication of the Outlook is only a few months old.

A Federal Long-run Projection Model for Germany
in: IWH Discussion Papers, No. 11, 2012
Abstract
Many economic decisions implicitly or explicitly rely on a projection of the medium- or long-term economic development of a country or region. In this paper, we provide a federal long-run projection model for Germany and the German states. The model fea-tures a top-down approach and, as major contribution, uses error correction models to estimate the regional economic development dependent on the national projection. For the medium- and long-term projection of economic activity, we apply a production function approach. We provide a detailed robustness analysis by systematically varying assumptions of the model. Additionally, we explore the effects of different demographic trends on economic development.

Does Central Bank Staff Beat Private Forecasters?
in: IWH Discussion Papers, No. 5, 2012
Abstract
In the tradition of Romer and Romer (2000), this paper compares staff forecasts of the Federal Reserve (Fed) and the European Central Bank (ECB) for inflation and output with corresponding private forecasts. Standard tests show that the Fed and less so the ECB have a considerable information advantage about inflation and output. Using novel tests for conditional predictive ability and forecast stability for the US, we identify the driving forces of the narrowing of the information advantage of Greenbook forecasts coinciding with the Great Moderation.

Is East Germany Catching Up? A Time Series Perspective
in: IWH Discussion Papers, No. 14, 2009
Abstract
This paper assesses whether the economy of East Germany is catching up with the West German region in terms of welfare. While the primary measure for convergence and catching up is per capita output, we also look at other macroeconomic indicators such as unemployment rates, wage rates, and production levels in the manufacturingsector. In contrast to existing studies of convergence between regions of reunified Germany, our approach is purely based upon the time series dimension and is thus directly focused on the catching up process in East Germany as a region. Our testing setup includes standard ADF unit root tests as well as unit root tests that endogenously allow for a break in the deterministic component of the process. In our analysis, we find evidence of catching up for East Germany for most of the indicators. However, convergence speed is slow, and thus it can be expected that the catching up process will take further decades until the regional gap is closed.