We study the real effects of certification to demonstrate the value of mandatory certification over and above mandatory disclosure in enhancing investment efficiency. In our model, a firm's manager selects a project to maximize the firm's short‐term stock price, which is a function of her certification and disclosure decisions about the outcome of the project. Although the manager might be either forthcoming or strategic with regard to the disclosure of her private information, she can strategically choose whether to incur a cost or not to certify her disclosure, unless mandated. The manager always selects the first‐best project when both certification and disclosure are mandatory. However, when certification is voluntary, project selection is inefficient. In addition, mandating disclosure without mandating certification can lead to lower investment efficiency than mandating neither. In justifying why mandatory certification is beneficial for public firms, our results offer a note of caution regarding the contemplated regulatory moves for increased disclosures by public firms without corresponding certification requirements, for example, the recent SEC proposal requiring extensive climate‐related disclosure.

We study the economic impacts of adopting harmonized accounting standards when firms’ investments exhibit beauty contest features. We model harmonized accounting standards as common/correlated noises in firms’ accounting reports. We show that while more harmonized accounting standards have ambiguous effects on the reports’ informativeness in representing firms’ underlying fundamentals, they always reduce their usefulness in forecasting aggregate investments. Therefore, the stronger the beauty contest features, the more important the forecasts about the aggregate investment, thus calling for less harmonized accounting standards. We also find that, absent beauty contest features, mandatory adoption of harmonized accounting standards can be unnecessary; however, such a mandate is warranted when beauty contest features are strong as firms, when left on their own, would not voluntarily do so. Taken together, our results provide both a justification for and identification of an unintended consequence of the recent mandates toward adopting harmonized accounting standards.

Corporate managers are often better informed than outside investors about the uncertain future benefits of investments. However, information about investment prospects is not verifiable and therefore not amenable to direct disclosure, but instead inferred by investors from other accounting disclosures. Given this situation, we study the normative question of how the market’s perceptions of uncertainty and its beliefs about the expected level of future benefits of investment should factor into mandatory financial reports of investment expenditures. We establish a threshold of uncertainty in future benefits beyond which it is better to aggregate investment expenditures with cash flow from ongoing operations, rather than measuring and reporting the two separately. We obtain the surprising result that the higher the expectation of future benefits, the lower this uncertainty threshold should be.