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Die Dis cus si on Pape rs die nen einer mög lichst schnel len Ver brei tung von neue ren For schungs arbei ten des ZEW. Die Bei trä ge lie gen in allei ni ger Ver ant wor tung der Auto ren und stel len nicht not wen di ger wei se die Mei nung des ZEW dar.Dis cus si on Papers are inten ded to make results of ZEW research prompt ly avai la ble to other eco no mists in order to encou ra ge dis cus si on and sug gesti ons for revi si ons. The aut hors are sole ly respon si ble for the con tents which do not neces sa ri ly repre sent the opi ni on of the ZEW.Download this ZEW Discussion Paper from our ftp server:ftp://ftp.zew.de/pub/zew-docs/dp/dp10036.pdf Non-technical summaryThis paper presents a new corporate microsimulation model, ZEW TaxCoMM, which allows for the coherent micro-based analysis (ex ante and ex post) of reform induced revenue implications and the distribution of the tax burden between firms of different characteristics. In this paper, ZEW TaxCoMM is employed to evaluate the consequences of the 2008 German corporate tax reform.The German corporate tax reform of 2008 has brought about important cuts in corporate tax rates, which were at the same time accompanied by significant changes in the determination of the tax base for both major German corporate taxes -corporate income tax and trade tax. The reform followed the distinct and internationally prevalent pattern of tax rate cut cum base broadening. Hence, the results on the distribution of the tax burden according to firm characteristics stand exemplarily for those reforms which follow a similar pattern. Especially in view of the current economic crisis, questions on the distribution of the tax burden among firms of different characteristics have arisen and still remain at the heart of the academic and political debate in Germany and other countries.As a result, the ZEW TaxCoMM simulations show that less than 5% of all corporations did not benefit from the 2008 German corporate tax reform. The average annual relief as measured by the average decline in the effective tax burden on cash flows amounts to 2.8 percentage points for large corporations and to 6 percentage points for small corporations. Clearly, small firms benefited more. As to tax revenues, the reform induced decrease amounts to € 9.8 billion. The decline in tax revenues is more important for the corporate income tax. The trade tax thus gains fiscally in importance.Furthermore, the simulation illustrates that firms with low profitability, high debt ratio and high capital intensity benefit least from the reform. This is a consequence of the reform detaching the tax base from profits by banning the deduction of business expenses. This additionally endangers the existence of firms in times of massive economic downturn. Indeed, policy makers in Germany and other countries reacted by modifying the most harmful regulations which implied the taxation of economic worth instead of profits. Abstract: The German corporate tax reform of 2008 has brought about important cuts in corporate tax rates, w...

Die Dis cus si on Pape rs die nen einer mög lichst schnel len Ver brei tung von neue ren For schungs arbei ten des ZEW. Die Bei trä ge lie gen in allei ni ger Ver ant wor tung der Auto ren und stel len nicht not wen di ger wei se die Mei nung des ZEW dar.Dis cus si on Papers are inten ded to make results of ZEW research prompt ly avai la ble to other eco no mists in order to encou ra ge dis cus si on and sug gesti ons for revi si ons. The aut hors are sole ly respon si ble for the con tents which do not neces sa ri ly repre sent the opi ni on of the ZEW. Evidence on Book-tax Differences and Disclosure Quality Based on the Notes to the Financial StatementsMaria Theresia Evers*, Katharina Finke*, Sebastian Matenaer**, Ina Meier**, Benedikt Zinn* July 2014Abstract: The German Accounting Law Modernization Act (BilMoG) represents a change in paradigm with regard to the traditionally close relationship between financial and tax accounting in Germany. At the same time, requirements on the disclosure of deferred taxes were revised considerably. We make use of these new disclosure provisions to disaggregate firms' deferred tax position and to analyze the components of temporary book-tax differences that add to the reporting gap in Germany. To this end, we apply a unique dataset of hand-collected information from individual financial statements for the fiscal year 2010. We find considerable differences between financial and tax accounting and observe that temporary book-tax differences are mainly associated with mandatory differences in accounting for provisions. The scope and quality of tax-related disclosures vary substantially and the overall disclosure quality is low. In order to identify the determinants of the heterogeneity of disclosure quality, we construct an index for voluntary and mandatory disclosure of deferred tax information and conduct multivariate analyses to explain firms' disclosure decisions. We show that the recognition of deferred tax assets and liabilities on the face of the balance-sheet is significantly and positively related with disclosure quality in the notes to the financial statements. Further, our results suggest that larger firms are more likely to have highquality tax disclosures and that high implementation costs could also explain the observed shortfalls in disclosure quality. Moreover, we find that different reporting incentives might apply if reporting on losses is assessed in isolation. We use these insights to derive implications for the discussion about whether and how to reform disclosure requirements under German GAAP. JEL Classification: H20, H25, K34, M41Keywords: book-tax conformity; book-tax differences; deferred taxes; disclosure quality; tax reporting

Die Dis cus si on Pape rs die nen einer mög lichst schnel len Ver brei tung von neue ren For schungs arbei ten des ZEW. Die Bei trä ge lie gen in allei ni ger Ver ant wor tung der Auto ren und stel len nicht not wen di ger wei se die Mei nung des ZEW dar.Dis cus si on Papers are inten ded to make results of ZEW research prompt ly avai la ble to other eco no mists in order to encou ra ge dis cus si on and sug gesti ons for revi si ons. The aut hors are sole ly respon si ble for the con tents which do not neces sa ri ly repre sent the opi ni on of the ZEW.Download this ZEW Discussion Paper from our ftp server:ftp://ftp.zew.de/pub/zew-docs/dp/dp08117.pdf Non-Technical SummaryPolitical discussion in Germany and other European countries revealed the outstanding relevance accorded to revenue and distribution effects of tax reforms in the field of corporate taxation. Both issues are taken as crucial determinants for the feasibility and sustainability of tax systems thus eclipsing systematic aspects of taxation at least partially. So far, the coverage of existing quantitative approaches on the impact of corporate taxation does not reflect this demand. Widely recognised approaches focus on the computation of effective tax burdens thus providing important insights into the incentives of taxation. Unfortunately, these models do not allow robust conclusions on revenue impacts and distributional consequences of tax reforms. In view of the scarce evidence on these issues at least at corporate level, the intention of this paper is to put forward an instrument explicitly allowing for policy analysis of corporate tax reforms. The proposed corporate microsimulation model has been developed at the Centre of European Economic Research (ZEW) in collaboration with the University of Mannheim.The idea of this paper is to employ the methodology of microsimulation for policy analyses since this methodology captures structural differences of micro units and is thus appropriate to draw conclusions on the individual financial impacts of tax reforms. The key feature of the proposed corporate microsimulation model consists in processing financial statements taken from the DAFNE data base of the Bureau van Dijk and deriving the tax base for corporate income tax and trade tax endogenously. In this context the consideration of firm specific balance-sheet data and profit and loss account data provides a linkage to the real economic sphere which is crucial to account for the real development of corporations over time, to capture changes in the legal framework adequately and later on to integrate behavioural responses to tax reforms. To simulate tax regulations according to a reference tax system or a reform proposal, the data-set is supplemented by survey data on tax accounting practices. It is shown that the distinct set-up of the proposed model can account for tax regulations in great detail.Among other elements of the corporate tax base, regulations governing depreciation, provisions, creditors and financial results for tax purposes are conside...

Die Dis cus si on Pape rs die nen einer mög lichst schnel len Ver brei tung von neue ren For schungs arbei ten des ZEW. Die Bei trä ge lie gen in allei ni ger Ver ant wor tung der Auto ren und stel len nicht not wen di ger wei se die Mei nung des ZEW dar.Dis cus si on Papers are inten ded to make results of ZEW research prompt ly avai la ble to other eco no mists in order to encou ra ge dis cus si on and sug gesti ons for revi si ons. The aut hors are sole ly respon si ble for the con tents which do not neces sa ri ly repre sent the opi ni on of the ZEW. Taxing investments in the Asia AbstractThis paper investigates the taxation of investments in the Asia-Pacific region. Our analysis is based on the methodology of Griffith (1999, 2003) for determining effective average tax rates. This approach allows us to account for important national and international tax regulations. Our results show that the overall dispersion of effective tax burdens in Asia-Pacific ranges from 10.6% in Hong Kong to 40.4% in India for domestic investments (overall average of 23.4%). In 8 out of 19 jurisdictions covered, investments are, however, effectively taxed at a rate between 20% and 25%. If the investment is made by a foreign investor, cross-border taxation has a significant impact on the overall tax burden. In any of the Asia-Pacific jurisdictions, foreign direct investments by a Singaporean or a German parent company are on average taxed at 29.2% and at 32.8% in case of a US investor. Meanwhile, tax incentives for the stimulation of private investment reduce the effective average tax rate by 8.6 percentage points on average. Fiscal incentives targeted at investments in the high technology sector or the development of specific geographic areas result in the lowest effective tax burdens.

Die Dis cus si on Pape rs die nen einer mög lichst schnel len Ver brei tung von neue ren For schungs arbei ten des ZEW. Die Bei trä ge lie gen in allei ni ger Ver ant wor tung der Auto ren und stel len nicht not wen di ger wei se die Mei nung des ZEW dar.Dis cus si on Papers are inten ded to make results of ZEW research prompt ly avai la ble to other eco no mists in order to encou ra ge dis cus si on and sug gesti ons for revi si ons. The aut hors are sole ly respon si ble for the con tents which do not neces sa ri ly repre sent the opi ni on of the ZEW.Extending taxation of interest and royalty income at sourcean option to limit base erosion and profit shifting? ‡ Katharina Finke*, Clemens Fuest**, Hannah Nusser*** and Christoph Spengel**** September 2014Abstract: This paper discusses tax policy measures to reduce corporate tax avoidance by extending taxation in the source country without imposing double taxation. We focus on four options: Bilaterally restricting interest and royalty deductibility, introducing an inverted tax credit system, levying withholding taxes on all interest and royalty payments and levying withholding taxes as an anti-avoidance regulation. We calculate the tax revenue effects of introducing a minimum withholding tax on royalty payments and an inverted tax credit. For the withholding tax we find that the US would suffer the greatest tax revenue losses, while some other countries would increase their tax revenue. In general, gains and losses depend not only on net balances in royalty income flows but also on withholding tax and credit rules under the status quo. The inverted tax credit would increase tax revenue in particular in high-tax countries. Revenue redistribution would only arise if withholding taxes were replaced by the inverted credit.JEL Classification: H20, H21, H 32, F23, K34

Die Dis cus si on Pape rs die nen einer mög lichst schnel len Ver brei tung von neue ren For schungs arbei ten des ZEW. Die Bei trä ge lie gen in allei ni ger Ver ant wor tung der Auto ren und stel len nicht not wen di ger wei se die Mei nung des ZEW dar.Dis cus si on Papers are inten ded to make results of ZEW research prompt ly avai la ble to other eco no mists in order to encou ra ge dis cus si on and sug gesti ons for revi si ons. The aut hors are sole ly respon si ble for the con tents which do not neces sa ri ly repre sent the opi ni on of the ZEW. May 2014Abstract: In their famous Mirrlees review (2011) on reforming the tax system for the 21st century, the authors put forward the introduction of an allowance for corporate equity regime. In recent years, several countries introduced an ACE regime. The main feature of an ACE regime is that it removes tax distortions on marginal investment and finance distortions. Yet, by narrowing the tax base an ACE regime potentially requires an increase in tax rates which might affect location choices and profit shifting activity negatively. In this paper, we employ a microsimulation model to determine the consequences of introducing an ACE regime in Germany. The simulation results show that granting an ACE for corporate income tax purposes results in a revenue loss of about 18%. This could be financed by an increase of the combined profit tax rate by 6 percentage points. At firm level, our analysis illustrates the heterogeneous distribution of the reform effect accross the sample. For 50% of firms between the 25th and 75th percentile, introducing an ACE regime reduces tax payments between 35% and 2%. If the ACE is combined with a tax rate adjustment, the tax effect ranges between -32% and +7.1% for firms between the 25th and 75th percentile. With respect to behavioural responses on decision margins, we find that introducing the ACE reduces the mean debt-ratio by about 1.5 percentage points in the short run. For the capital-stock we arrive at a mean short-term increase of 2.4%. Finally, our computations show that the ACE regime with adjusted profit tax rate cannot be overall tax neutral. In particular, the increase in the profit tax rate required to finance the equity allowance induces intensified outward profit-shifting activities and affects location choices negatively. In the short-run the tax revenue is therefore shown to decline to about 95% of its original level.

Die Dis cus si on Pape rs die nen einer mög lichst schnel len Ver brei tung von neue ren For schungs arbei ten des ZEW. Die Bei trä ge lie gen in allei ni ger Ver ant wor tung der Auto ren und stel len nicht not wen di ger wei se die Mei nung des ZEW dar.Dis cus si on Papers are inten ded to make results of ZEW research prompt ly avai la ble to other eco no mists in order to encou ra ge dis cus si on and sug gesti ons for revi si ons. The aut hors are sole ly respon si ble for the con tents which do not neces sa ri ly repre sent the opi ni on of the ZEW.Download this ZEW Discussion Paper from our ftp server:ftp://ftp.zew.de/pub/zew-docs/dp/dp10036.pdf Non-technical summaryThis paper presents a new corporate microsimulation model, ZEW TaxCoMM, which allows for the coherent micro-based analysis (ex ante and ex post) of reform induced revenue implications and the distribution of the tax burden between firms of different characteristics. In this paper, ZEW TaxCoMM is employed to evaluate the consequences of the 2008 German corporate tax reform.The German corporate tax reform of 2008 has brought about important cuts in corporate tax rates, which were at the same time accompanied by significant changes in the determination of the tax base for both major German corporate taxes -corporate income tax and trade tax. The reform followed the distinct and internationally prevalent pattern of tax rate cut cum base broadening. Hence, the results on the distribution of the tax burden according to firm characteristics stand exemplarily for those reforms which follow a similar pattern. Especially in view of the current economic crisis, questions on the distribution of the tax burden among firms of different characteristics have arisen and still remain at the heart of the academic and political debate in Germany and other countries.As a result, the ZEW TaxCoMM simulations show that less than 5% of all corporations did not benefit from the 2008 German corporate tax reform. The average annual relief as measured by the average decline in the effective tax burden on cash flows amounts to 2.8 percentage points for large corporations and to 6 percentage points for small corporations. Clearly, small firms benefited more. As to tax revenues, the reform induced decrease amounts to € 9.8 billion. The decline in tax revenues is more important for the corporate income tax. The trade tax thus gains fiscally in importance.Furthermore, the simulation illustrates that firms with low profitability, high debt ratio and high capital intensity benefit least from the reform. This is a consequence of the reform detaching the tax base from profits by banning the deduction of business expenses. This additionally endangers the existence of firms in times of massive economic downturn. Indeed, policy makers in Germany and other countries reacted by modifying the most harmful regulations which implied the taxation of economic worth instead of profits. Abstract: The German corporate tax reform of 2008 has brought about important cuts in corporate tax rates, w...