Econometric Tools for Macroeconomic Forecasting and Simulation
The aim of the research group “Econometric Tools for Macroeconomic Forecasting and Simulation” is to enhance research on, and development, implementation, evaluation, and application of quantitative macroeconometric models for forecasting and analysing aggregate economic fluctuations and developments.
Besides forecasting macroeconomic dynamics, long-term growth processes and the interaction of economic activity and natural environment play a major role in simulation models that are mainly implemented for policy impact assessment. Research in this group contributes to the econometric foundation and the methodological improvements of the IWH forecasts and macroeconomic policy recommendations.
Furthermore, this group conducts comprehensive empirical analysis and develops econometric tools that are used for third-party funded projects. In recent years, models have been developed for Volkswagen Bank, for several economic ministries in central Asia with financial support by GIZ, for the German Environment Agency (UBA) and within the Horizon 2020 project ENTRANCES.
Workpackage 1: Nowcasting and Short-term Forecasting with Real-time Data
Workpackage 2: Simulation with GE Models and Integrated Assessment Models
IWH Data Project: IWH-Real-time Database and IWH Forecast Database
An important challenge is that macroeconomic data are substantially revised and that the data are published with a considerable time lag. We maintain a large database for major economic aggregates in euro area countries. Although Eurostat publishes national accounts data for all member countries no official real-time data exists and, hence, it is not possible to evaluate forecasts with real-time releases.
The database is complemented by other macro-economic variables that are revised or rebased over time. This unique database will summarise the official data in an efficient and easily accessible way. Furthermore, the database will be supplemented by a forecast database for euro area member states by the European Commission for national account aggregates and forecast assumptions.
The new web application IWH Forecasting Dashboard (ForDas) provides a platform for macroeconomic forecasts from various institutions for the German economy. Users of the Dashboard can assess historical and recent forecasts and to evaluate the forecast performance. Furthermore, it allows for direct comparison across forecast institutions.
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

Inequality in Life and Death
in: IMF Economic Review, March 2022
Abstract
We argue that the COVID epidemic disproportionately affected the economic well-being and health of poor people. To disentangle the forces that generated this outcome, we construct a model that is consistent with the heterogeneous impact of the COVID recession on low- and high-income people. According to our model, two-thirds of the inequality in COVID deaths reflect preexisting inequality in comorbidity rates and access to quality health care. The remaining third stems from the fact that low-income people work in occupations where the risk of infection is high. Our model also implies that the rise in income inequality generated by the COVID epidemic reflects the nature of the goods that low-income people produce. Finally, we assess the health-income trade-offs associated with fiscal transfers to the poor and mandatory containment policies.

Power Generation and Structural Change: Quantifying Economic Effects of the Coal Phase-out in Germany
in: Energy Economics, 2021
Abstract
In the fight against global warming, the reduction of greenhouse gas emissions is a major objective. In particular, a decrease in electricity generation by coal could contribute to reducing CO2 emissions. We study potential economic consequences of a coal phase-out in Germany, using a multi-region dynamic general equilibrium model. Four regional phase-out scenarios before the end of 2040 are simulated. We find that the worst case phase-out scenario would lead to an increase in the aggregate unemployment rate by about 0.13 [0.09 minimum; 0.18 maximum] percentage points from 2020 to 2040. The effect on regional unemployment rates varies between 0.18 [0.13; 0.22] and 1.07 [1.00; 1.13] percentage points in the lignite regions. A faster coal phase-out can lead to a faster recovery. The coal phase-out leads to migration from German lignite regions to German non-lignite regions and reduces the labour force in the lignite regions by 10,100 [6300; 12,300] people by 2040. A coal phase-out until 2035 is not worse in terms of welfare, consumption and employment compared to a coal-exit until 2040.

(Since when) are East and West German Business Cycles Synchronised?
in: Jahrbücher für Nationalökonomie und Statistik, No. 1, 2021
Abstract
We analyze whether, and since when, East and West German business cycles are synchronised. We investigate real GDP, unemployment rates and survey data as business cycle indicators and we employ several empirical methods. Overall, we find that the regional business cycles have synchronised over time. GDP-based indicators and survey data show a higher degree of synchronisation than the indicators based on unemployment rates. However, synchronisation among East and West German business cycles seems to have become weaker again recently.

Switching to Good Policy? The Case of Central and Eastern European Inflation Targeters
in: Macroeconomic Dynamics, No. 8, 2020
Abstract
The paper analyzes how actual monetary policy changed following the official adoption of inflation targeting in the Czech Republic, Hungary, and Poland and how it affected the volatilities of important macroeconomic variables in the years thereafter. To disentangle the effects of the policy shift from exogenous changes in the volatilities of these variables, a Markov-switching dynamic stochastic general equilibrium model is estimated that allows for regime switches in the policy parameters and the volatilities of shocks hitting the economies. Whereas estimation results reveal periods of high and low volatility for all three economies, the presence of different policy regimes is supported by the underlying data for the Czech Republic and Poland, only. In both economies, monetary policy switched from weak and unsystematic to strong and systematic responses to inflation dynamics. Simulation results suggest that the policy shifts of both central banks successfully reduced inflation volatility in the following years. The observed reduction in output volatility, on the other hand, is attributed more to a reduction in the size of external shocks.

The Effects of Fiscal Policy in an Estimated DSGE Model – The Case of the German Stimulus Packages During the Great Recession
in: Macroeconomic Dynamics, No. 6, 2020
Abstract
In this paper, we analyze the effects of the stimulus packages adopted by the German government during the Great Recession. We employ a standard medium-scale dynamic stochastic general equilibrium (DSGE) model extended by non-optimizing households and a detailed fiscal sector. In particular, the dynamics of spending and revenue variables are modeled as feedback rules with respect to the cyclical components of output, hours worked and private investment. Based on the estimated rules, fiscal shocks are identified. According to the results, fiscal policy, in particular public consumption, investment, and transfers prevented a sharper and prolonged decline of German output at the beginning of the Great Recession, suggesting a timely response of fiscal policy. The overall effects, however, are small when compared to other domestic and international shocks that contributed to the economic downturn. Our overall findings are not sensitive to considering fiscal foresight.
Working Papers

The German Energy Crisis: A TENK-based Fiscal Policy Analysis
in: IWH Discussion Papers, No. 1, 2025
Abstract
<p>We study the aggregate, distributional, and welfare effects of fiscal policy responses to Germany’s energy crisis using a novel Ten-Agents New-Keynesian (TENK) model. The energy crisis, compounded by the COVID-19 pandemic, led to sharp increases in energy prices, inflation, and significant consumption disparities across households. Our model, calibrated to Germany’s income and consumption distribution, evaluates key policy interventions, including untargeted and targeted transfers, a value-added tax cut, energy tax reductions, and an energy cost brake. We find that untargeted transfers had the largest short-term aggregate impact, while targeted transfers were most cost-effective in supporting lower-income households. Other instruments, as the prominent energy cost brake, yielded comparably limited welfare gains. These results highlight the importance of targeted fiscal measures in addressing distributional effects and stabilizing consumption during economic crises.</p>

Is Risk the Fuel of the Business Cycle? Financial Frictions and Oil Market Disturbances
in: IWH Discussion Papers, No. 4, 2024
Abstract
I estimate a dynamic stochastic general equilibrium (DSGE) model for the United States that incorporates oil market shocks and risk shocks working through credit market frictions. The findings of this analysis indicate that risk shocks play a crucial role during the Great Recession and the Dot-Com bubble but not during other economic downturns. Credit market frictions do not amplify persistent oil market shocks. This result holds as long as entry and exit rates of entrepreneurs are independent of the business cycle.

Economic Sentiment: Disentangling Private Information from Public Knowledge
in: IWH Discussion Papers, No. 15, 2021
Abstract
This paper addresses a general problem with the use of surveys as source of information about the state of an economy: Answers to surveys are highly dependent on information that is publicly available, while only additional information that is not already publicly known has the potential to improve a professional forecast. We propose a simple procedure to disentangle the private information of agents from knowledge that is already publicly known for surveys that ask for general as well as for private prospects. Our results reveal the potential of our proposed technique for the usage of European Commissions‘ consumer surveys for economic forecasting for Germany.

Conditional Macroeconomic Forecasts: Disagreement, Revisions and Forecast Errors
in: IWH Discussion Papers, No. 7, 2021
Abstract
Using data from the European Central Bank‘s Survey of Professional Forecasters, we analyse the role of ex-ante conditioning variables for macroeconomic forecasts. In particular, we test to which extent the heterogeneity, updating and ex-post performance of predictions for inflation, real GDP growth and the unemployment rate are related to assumptions about future oil prices, exchange rates, interest rates and wage growth. Our findings indicate that inflation forecasts are closely associated with oil price expectations, whereas expected interest rates are used primarily to predict output growth and unemployment. Expectations about exchange rates and wage growth also matter for macroeconomic forecasts, albeit less so than oil prices and interest rates. We show that survey participants can considerably improve forecast accuracy for macroeconomic outcomes by reducing prediction errors for external conditions. Our results contribute to a better understanding of the expectation formation process of experts.

Disentangling Covid-19, Economic Mobility, and Containment Policy Shocks
in: IWH Discussion Papers, No. 2, 2021
Abstract
We study the dynamic impact of Covid-19, economic mobility, and containment policy shocks. We use Bayesian panel structural vector autoregressions with daily data for 44 countries, identified through sign and zero restrictions. Incidence and mobility shocks raise cases and deaths significantly for two months. Restrictive policy shocks lower mobility immediately, cases after one week, and deaths after three weeks. Non-pharmaceutical interventions explain half of the variation in mobility, cases, and deaths worldwide. These flattened the pandemic curve, while deepening the global mobility recession. The policy tradeoff is 1 p.p. less mobility per day for 9% fewer deaths after two months.