Knowledge that Transforms

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Estimating profitability decomposition frameworks via machine learning: Implications for earnings forecasting and financial statement analysis

Journal of Accounting and Economics 2025 80(2-3), 101805 open access
We find that nonlinear estimation of profitability decomposition frameworks yields more accurate out-of-sample profitability forecasts than forecasts from both a random walk and linear estimation. The improvements derive from nonlinear estimation and synergies between nonlinear estimation and profitability decomposition frameworks. We analyze three essential financial statement analysis design choices to provide insights for the practice of fundamental analysis and find robust evidence that higher levels of profitability decomposition, focusing on core items, and using up to three years of historical information improve forecast accuracy. We find that our forecasts predict returns and profitability changes before and after controlling for analyst forecasts and common asset pricing factors.

Firms’ real and reporting responses to taxation: A review

Journal of Accounting and Economics 2025 80(2-3), 101837 open access
Taxation is a central economic policy tool, with governments increasingly using tax policy to stimulate local economic growth and also regulate multinational firms. We review the empirical literature that studies the effect of tax policies on firms’ investment, employment, and other real outcomes. Building on the neoclassical theory of corporate taxes and tangible investment, we propose an organizing framework for our review that captures the wide set of tax policies and firm responses examined in accounting research. This framework highlights four dimensions along which accounting scholars contribute to the literature: (i) documenting the role of financial reporting incentives as a moderating factor in firms’ real responses, (ii) studying firms’ reporting versus real responses, (iii) quantifying real effects of tax disclosure regulations, and (iv) improving measurement of firms’ tax status and proxies for investment and employment. We identify open questions for future research and suggest new international, federal, and local settings that may help uncover underlying mechanisms driving observed economic phenomena. Specifically, we encourage scholars to further distinguish firms’ reported and real responses to tax changes and improve measurement of these outcomes, especially in settings related to environmental taxation or settings in which tax avoidance and real outcomes are closely linked.

Does generative AI facilitate investor Trading? Early evidence from ChatGPT outages

Journal of Accounting and Economics 2025 80(2-3), 101821 open access
In this paper, we use ChatGPT outages to provide early evidence on whether investors rely on generative artificial intelligence (GenAI) to perform professional tasks and the associated impact on stock price informativeness. We document a significant decline in stock trading volume during ChatGPT outages. The effect is stronger for firms with corporate news released immediately before or during the outages and for firms with higher ownership held by transient institutional investors. We then document declines in short-run price impact and return variance during the outage periods, consistent with reduced informed trading. Lastly, we document a positive effect of GenAI-assisted trading on long-run stock price informativeness. Overall, our findings indicate that a significant number of investors use ChatGPT in ways that influence their trading decisions and market outcomes. Future research can investigate the mechanisms underlying these GenAI effects and the potential risks of using GenAI for trading.

Comply-or-explain regulation and investor protection

Journal of Accounting and Economics 2025 79(2-3), 101765 open access
We investigate a 2012 comply-or-explain regulation implemented by China’s Shanghai Stock Exchange. The regulation requires eligible firms to pay 30% of their current-year profits as cash dividends or explain the reasons why they do not meet this requirement through a public conference call. Using firms listed on the Shenzhen Stock Exchange as a control group, our difference-in-differences estimates suggest that firms subject to the regulation decreased tunneling, irrespective of whether they complied by paying or disclosing. Further analyses suggest that the reduction in tunneling is partially attributed to enhanced regulatory monitoring over explaining firms and the constraint on excess cash of paying firms. These findings offer novel policy insights into how a flexible comply-or-explain form of regulation can mitigate agency costs between controlling and minority shareholders in a weak institutional environment.

Do sell-side analysts react too pessimistically to bad news for minority-led firms? Evidence from target price valuations

Journal of Accounting and Economics 2025 79(1), 101707 open access
We find that the adverse impact of bad news on analysts’ valuations is 57% larger when the CEO is Non-White, resulting in more pessimistic valuations for Non-White CEOs relative to their White counterparts. Non-White CEO firms are more likely to surpass analysts’ valuation targets in the subsequent 12 months, suggesting that this racial gap lacks economic justification. To provide further evidence of a racial bias: (1) we triangulate our empirical findings with corroborating evidence from a controlled experiment and (2) we provide evidence that analysts’ valuation disparities towards Non-White CEO firms become larger when race relations are worse. Increases in CEO familiarity attenuate these disparities, suggesting the bias we document appears to be subconscious. Our findings suggest that resources allocated towards educating a firm’s stakeholders about the potential impact of implicit racial biases and increasing self-awareness may be impactful in promoting equality within capital markets.

Do signatory auditors with tax expertise facilitate or curb tax aggressiveness?

Journal of Accounting and Economics 2025 79(1), 101715 open access
Prior research concludes that tax-expert auditors facilitate tax aggressiveness. However, these studies examine auditors who also provide non-audit tax services to their clients, creating conflicting incentives. We predict that tax-expert auditors, who do not provide non-audit tax services, reduce tax aggressiveness, because tax aggressiveness imposes costs on them. We test our prediction using Chinese data, allowing us to identify Certified Tax Agents as tax-expert auditors. We find that companies are less tax aggressive when their signatory auditor is a tax-expert who does not provide non-audit tax services. Consistent with a causal relation, a decrease in tax rates, which reduces clients’ incentives to be tax aggressive, weakens the effect of tax-expertise on tax aggressiveness. Moreover, tax-expert auditors attenuate the type of tax aggressiveness that results in tax-related misstatements. Overall, by examining auditors who do not provide non-audit tax services, we find that tax-expert auditors curb tax aggressiveness, contrary to prior research.

Generalist managers and firm innovation worldwide: The role of innovation-specific institutions

Journal of Accounting and Economics 2025 79(2-3), 101755 open access
We examine how generalist CEOs influence innovation outcomes across 25 countries from 2001 to 2019. We assemble a novel, extended dataset of generalist CEOs and find that generalist CEOs positively affect innovation, particularly in countries with abundant innovation resources. This finding aligns with the notion that generalist CEOs leverage their broad knowledge and cross-industry experience to integrate resources across institutional environments, thereby fostering innovation activities. However, in countries with stricter patent systems, the increased need for specialized knowledge and resources limits the value that generalist CEOs can contribute, leading to decreased innovation activities. Our research highlights how institutional environments shape the efficacy of CEO human capital in driving innovation, thus offering insights for the design of innovation policies that maximize leadership potential across different institutional contexts.

The effect of limited tax loss carryforwards on corporate investment

Journal of Accounting and Economics 2025 80(1), 101756 open access
This paper examines the corporate investment effect of a time limit on the use of net operating losses (NOLs). We predict that when countries limit the use of NOLs to a few years instead of allowing indefinite use, managers of loss-making firms have an incentive to increase investments to utilize NOLs before they expire. Using exogenous shocks to profitability from two earthquakes in Italy and variation in the tax treatment of NOLs over time, we find support for this prediction: when the use of NOLs is time-restricted, firms facing losses increase investment. Moreover, this effect is more significant for firms with shorter investment horizons and those in more profitable industries. We provide external validity for this finding using a large panel of firms from European Union countries exploiting variation in tax regimes. These results indicate that restricting loss offsets can increase investments of loss-making firms.

Reporting regulation and corporate innovation

Journal of Accounting and Economics 2025 80(1), 101769 open access
We investigate the impact of reporting regulation on corporate innovation. Exploiting thresholds in Europe's regulation, we find that forcing firms to disclose financial statements reduces the number of innovating firms and the average firm's innovation spending, but it does not reduce industry-wide total innovation spending. Our results suggest that the regulation imposes proprietary costs on firms, which discourages innovation activity, especially by smaller firms. We also show that the regulation provides positive information spillovers to other firms (e.g., competitors, suppliers, and customers), especially larger ones. We complement our analysis with alternative innovation measures, including patents, and corroborate the results with an analysis of reporting changes due to an enforcement reform in Germany. In sum, the European reporting regulation has aggregate and distributional effects on corporate innovation. Importantly, it appears to concentrate innovative activities among fewer, mostly larger firms, which could reflect institutional features of our setting or more general economic forces.

Green innovation and firms’ financial and environmental performance: The roles of pollution prevention versus control

Journal of Accounting and Economics 2025 79(1), 101706 open access
This study examines the effects of firms' green innovation on their future financial and environmental performance. If pollution is primarily a manifestation of wasted resources, then investments in pollution prevention technologies can both reduce the environmental impact of production and improve financial performance. In contrast, investments in pollution control technologies likely reduce the environmental impact of production without improving financial performance. Using green patents to capture firms' investments in these two types of technologies, we find that the value of a firm's pollution prevention patents is positively associated with its future financial and environmental performance, and that the positive impact on future financial performance is achieved through improvements in sales growth and cost efficiency. In contrast, the value of a firm's pollution control patents is not associated with its future financial or environmental performance. Overall, these findings shed light on the future implications of green innovation.