Statistical inference using the T index to quantify the level of comparability between accounts

The extent to which the accounts of companies are comparable is considered important to users and regulators. However, prior research has been restricted by a lack of appropriate statistical methods for testing comparability indices. This has made it difficult to assess the true level of comparability from sample data and to test research hypotheses such as whether the level of comparability (a) differs by policy, (b) differs by country, and (c) changes over time. This paper fills this gap by exploring the statistical properties of the T index. The T index generalises the H, C, I and various modifications of these indices and represents a unified framework for the measurement of the extent to which the accounts of companies are comparable. Formulae for the bias and standard error for any index under this framework are provided and proved. The bias is shown to equal zero or be negligible in most practical situations. Using historical data, the standard error is used to illustrate the accuracy with which comparability is estimated and to perform formal statistical inference using confidence intervals and p‐values. Furthermore, the sampling distribution of the T index is assessed for normality. Implications for research design and sample size determination are also discussed.     

Auditors' Affirmations of Compliance with IFRS around the World: An Exploratory Study*

It is widely believed that international financial reporting standards (IFRS) have been adopted in many countries, at least for the consolidated reporting of listed companies. However, in nearly all cases, what the rules require is some national or supranational version of IFRS. This might create problems for investor confidence and comparability. We examine what companies and auditors report concerning compliance with IFRS, focusing on the first full year of IFRS reporting by companies in the stock market indices of four major European countries and Australia. We find that, even when companies were complying with IFRS, they were generally not saying so, which seems to miss part of the point of the 35‐year project on international harmonization. In a small number of cases, auditors provided dual reports: on full IFRS in addition to the mandated reference to national GAAP where the latter corresponds with full IFRS. These cases were found only in Germany and the United Kingdom, and mainly related to companies that filed with the Securities and Exchange Commission as foreign private issuers. We propose explanations for the general lack of dual reports and for the exceptions. We call for widespread adoption of dual reporting where a plain report on IFRS is not yet possible.     

The Measurement of Comparability in Accounting Research

Indices of harmony such as the H, C, I and T indices have been developed and used in the accounting literature to quantify the level of comparability of company accounts. This has led to advances in definitions of comparability as well as empirically quantifying the extent of comparability between actual company accounts. These are important because the general concept of comparability is considered desirable, as highlighted by its inclusion as one of four qualitative characteristics in the framework of the International Accounting Standard Board (IASB). This paper rebuts criticisms of harmony indices in the accounting literature by arguing these criticisms either: (a) apply to old indices but not to newer ones, (b) apply to most empirical accounting research, (c) are based on incorrect or irrelevant assertions, or (d) relate to alternative definitions of harmony. This assists the use and interpretation of harmony indices and advances our understanding of what comparability means. New indices within the T index framework are also proposed by directly comparing company accounts and therefore avoiding the previous requirement to define ‘accounting methods’. A new index R is also proposed to capture international harmony between countries when within‐country uniformity is absent.     

Measuring the Degree of International Harmony in Selected Accounting Measurement Practices

This research assesses empirically the extent to which selected accounting measurement practices of companies from France, Germany, Japan, the UK and the US are harmonised in the context of major international efforts to enhance the comparability of company financial statements. The findings suggest that significant differences continue in accounting measurement practices between companies originating in each of these countries. The results of the study have important implications for international standard-setters, investors, creditors and those interested in international accounting.     

The Impact of Adopting International Accounting Standards on the Harmonization of Accounting Practices

Over the past few decades numerous organizations have been actively participating in the efforts to improve the comparability of financial reporting. Many studies have discussed the benefits and drawbacks of comparability. This study investigated the affect on the harmonization, or comparability, of accounting practices when a sample of companies choose to use international accounting standards (IASs) when preparing financial reports.This study analyzed trends in the I index, a measure of concentration for the use of a particular accounting practice introduced by van der Tas, to determine if the choice of accounting methods by a sample of Swiss companies became more aligned with a sample of companies from three other countries. The study included a control sample of Swiss companies that did not switch from reporting using local Swiss standards during the same time period, 1988 through 1995. Four accounting practices were included; depreciation, inventory, financial statement cost basis, and consolidation practices. The practices used were compared with a sample of companies from three countries; Japan, the UK, and the US.The results indicated that across the 8-year period, the majority of the I indices comparisons were positive and statistically significant. However, the results did not support that these increases were due primarily to the adoption of IASs.     

Are IFRS and U.S. GAAP converging? : Some evidence from People's Republic of China companies listed on the New York Stock Exchange

This research investigates the comparability and convergence of two sets of accounting standards from 1996 to 2002: United States’ Generally Accepted Accounting Principles (U.S. GAAP) and International Financial Reporting Standards (IFRS). The investigation involves a sample of companies from the People's Republic of China (PRC) that are listed on the New York Stock Exchange (NYSE). PRC companies traded on the NYSE generally prepare IFRS financial statements and provide a limited reconciliation to U.S. GAAP, creating a unique quasi-experimental opportunity to examine differences between two sets of accounting numbers produced by two different sets of accounting standards while holding the company constant. Comparability is measured by using Gray's index of comparability, and a set of measures are introduced to capture several dimensions of convergence over time in reported net income, net assets, return on net assets, and earnings per share. The evidence shows lack of comparability, caused largely by the revaluations of property, plant and equipment permitted under IFRS, but not permitted under U.S. GAAP. There is, however, substantial evidence of convergence over time.     

The impact of national GAAP and accounting traditions on IFRS policy selection: Evidence from Germany and the UK

The adoption of IFRS in the European Union in 2005 aimed to increase the comparability of publicly traded companies’ consolidated accounts. However, previous literature questions whether IFRS are applied consistently across countries with differing institutional environments, and therefore, whether de facto harmony has been achieved. We further examine this question by investigating IFRS accounting policy choices of listed companies in Germany and the UK between 2005 and 2009. We find that most firms, when choosing IFRS options, tend to retain accounting policies required by national rules. We also investigate national accounting traditions in the case of options under national GAAP and find that most companies continue these after adopting IFRS. Moreover, there appears to be little significant change in accounting choices over time from 2005 to 2009. Given the differences in accounting rules and practices that exist across countries, our results suggest that international differences in financial reporting are likely to continue under IFRS.     

Accounting comparability and relative performance evaluation by capital markets

This paper examines how accounting comparability affects the monitoring role and the risk allocation role of capital markets. We develop the statistical and informational properties of accounting reports under varying degrees of comparability. A perfectly comparable accounting information system enables investors to perfectly infer the difference between any two firms' future cash flows although investors remain uncertain about either firm's cash flow. Comparability alleviates entrepreneurs' moral hazard problem by strengthening the price response to the relative accounting performance, but can induce excessive price risk as well as residual systematic cash flow risk. Unlike the investors (users) who earn their surplus by bearing the residual systematic risk, the entrepreneurs (preparers) do not find perfect comparability desirable. Hence, a standard setter would mandate higher comparability than preferred by preparers, but not perfect comparability.     

The Influence of U.S. GAAP on the Harmony of Accounting Measurement Policies of Large Companies in the U.K. and Australia

U.S. GAAP has increasingly become an influence on accounting practices in other countries, even aside from those traditionally considered under direct U.S. influence. The change arises from the large number of U.S. accounting standards, non-U.S. companies listing on U.S. stock exchanges, and the amount of U.S. direct investment abroad. As the impact of U.S. GAAP varies across countries, it may affect international accounting harmony. This idea is tested by examining the level of international harmony for eleven accounting measurement policies in matched pairs of large companies from Australia and the U.K., two countries with historically strong cultural and economic links. It is argued that, in recent decades, accounting practice in Australia, more so than in the U.K., has become increasingly U.S.-oriented. The concepts of harmony of Tay and Parker (1990) and Archer et al . (1996) are employed. International harmony is measured by the between-country C index and chi-square test; national harmony by van der Tas's (1988) H index. While considerable national harmony is found in the U.K. for seven and in Australia for five accounting policies, there is considerable or complete international harmony for only three policies. Evidence is presented of the influence of U.S. GAAP as one factor explaining the poor degree of U.K./Australia international harmony. Australian companies appear to follow U.S. GAAP to a greater extent than do U.K. companies. The state of partial harmony thus existing restricts international comparability of accounting reports and may cause problems for regulators.     

IFRS fair value measurement and accounting policy choice in the United Kingdom and Australia

This study investigates the use of fair value measurement by 228 listed companies in the UK and Australia around the time of adoption of IFRS from 1 January 2005. We test whether within and between country comparability in policy choices (as measured by T indices) has changed in relation to (a) mandatory and (b) optional use of fair value measurement. Mandatory requirements related to financial instruments (IAS 39) and share-based payments (IFRS 2) have increased comparability, with a weaker effect for biological assets (IAS 41). In relation to the optional use of fair value, comparability increased in relation to property (IAS 16) because some companies discontinued fair value measurement. Under IAS 39, the fair value option for other financial assets and other financial liabilities decreased comparability. Options to use fair value in other areas (intangible assets, plant and equipment and investment properties) are not generally taken up, either for on-going measurement or on IFRS adoption (under the ‘deemed cost’ option). The results suggest a conservative approach and/or lack of incentives to use fair value measurement for most companies. Exceptions include some banks and insurance companies (for other financial assets and liabilities) and companies holding investment properties.     

The Measurement of Harmonisation and the Comparability of Financial Statement Items: Within-Country and Between-Country Effects

This paper reports on an analysis of accounting policy choices made by European companies with an international shareholding. The accounting policies analysed in depth in this paper comprise the treatment of goodwill and accounting for deferred taxation. In the paper, the van der Tas comparability index is developed by separating the index into two components relating to the within-country (intra-national) effects of domestic standardisation and the between-country (inter-national) effects of harmonisation. It is shown in this paper that the value of the index may be interpreted as the probability that two companies selected at random will report financial information that is comparable, and that the lowest level of comparability exists when the accounting methods are assumed to be distributed equiprobably over the companies, the outcome of a random selection of accounting policies. The paper also considers the problems of non-disclosure, and a comprehensive ‘disclosure-adjusted’ comparability index is proposed.     

Concurrent independent directors in the same industry and accounting information comparability

Using a sample of Chinese A-share listed companies during the 2008–2019 period, we explore the impact of concurrent independent directors in the same industry (hereafter CIDSI) on accounting information comparability. We find that CIDSI can effectively promote accounting information comparability and that this effect is realized mainly through inhibiting earnings management. We also find that CIDSI can provide broader industry perception of the company’s board reports. Variations in concurrent companies and internal and external environments have significant moderating effects on the relationship between CIDSI and accounting information comparability. This relationship contributes to reducing audit fees and the possibility of receiving non-standard unqualified audit opinions. Our findings have implications for companies by demonstrating the importance of recruiting independent directors.     

International harmonization of reporting required by stock markets

The 1980s witnessed a significant expansion of financial markets and, more specifically, of stock markets, at a world level. The differences which exist in the economic-accounting environment in which companies operate (legal structure, market development, national policy objectives, cultural factors) result in different procedures when shares are offered to the market, different reporting requirements required by the stock markets, etc. These differences reduce the efficiency of stock markets within an international environment. The importance of this fact has motivated the preparation of this paper, the aim of which is to analyze and quantify, where appropriate, the divergences which exist between the reporting requirements demanded by the stock markets of different countries and the home companies which wish to be quoted on them.     

解读国际会计协调化

国际会计协调化是一个富有弹性的动态概念。本文结合历史发展进程和国际环境因素的变化,阐明国际会计协调化这一概念是随同“会计国际化”与“会计国家化”之争而在国际论坛上亮相的。在“会计协调化”的各家定义中,最基本的共同点是:协调是指限制、缩小和减少会计差异的过程。在20世纪80年代,会计协调化被认为是与“标准化”“统一性”和“可比性”不同但相关的概念。作者援用IASC开发国际会计准则的历史,说明在不同的历史阶段协调化的不同内涵,在世纪之交IASC完成全面重组后,已经创立了可行的机制.使协调化体现为准则化(标准化),表现为高度可比甚至趋向统一的趋同化。当前,国际财务报告的趋同化已成为国际资本市场和货币市场的现实需求,是正在实现的近期目标;国家准则与国际准则的趋同化尚在启动阶段.可以说还只是远期目标,我们对IASB和各国准则机构的协作行动和成果寄予厚望。     

A Statistical Model of International Accounting Harmonization

This article shows how the difference between the observed frequencies of accounting policy choice and the outcome of a random policy choice, where each available method has an equal chance of being selected, may be fully explained with a statistical model. The process of harmonization is described in a way that identifies departures from equiprobable accounting policy choice as either: (a) the systematic effects of harmonization, or (b) the effects of systematic divergence from international harmony where the frequency of adoption of differing accounting methods varies across countries, or (c) the effects of company-specific accounting policy choices. The understanding of harmony that underlies previous attempts to measure harmonization is such that, with respect to a particular financial statement item, a situation of maximum harmony is reached when all companies in all countries use the same accounting method. From the standpoint of modelling the harmonization process. however, a different concept of harmony may be more useful. In this article, therefore, we posit a state of distributional harnzony in which, other things being equal, the expected distribution of accounting policy choices is the same in each country. In this theoretical state. the odds of selecting a given accounting method from those available for a particular financial statement item are identical for each country. A major advantage of this benchmark is that it provides a basis for distinguishing between two possibly conflicting components of the international harmonization process: between-country harmonization and within-country standardization. A hierarchy of nested statistical models is then used to describe accounting policy choices made by companies with an international shareholding and registered in Europe, where the European Union has been involved in a program of accounting harmonization. The accounting policies analysed in depth in this article comprise the treatment of goodwill and accounting for deferred taxation. The results are compared with the comparability index method used previously in harmonization research studies.     

National influence on the application of IFRS: Interpretations and accounting estimates by German and British accountants

International comparability of financial statements under IFRS can only be achieved if standards are interpreted and applied consistently across countries. However, the different institutional and cultural environments of various countries in which companies operate and in which individuals make accounting decisions suggest that application of IFRS may differ. Building on previous studies that found evidence for this in the area of explicit options under IFRS, we examine the use of discretion in interpretations and accounting estimates by surveying German and British accountants, asking them to account for identical cases under IFRS. The results of this test provide only some evidence for international differences in accountants' judgments. This suggests that the national environment might be less relevant in those fields of room for maneuver in the application of IFRS. However, we find considerable variability of responses within jurisdictions and therefore further conclude that differences in personal characteristics might be more important than cultural factors.     

An Investigation of the Relationship between Use of International Accounting Standards and Source of Company Finance in Germany

This study examines the relationship between use of international accounting standards and companies’ source of finance. We investigate the proposition contained in Nobes’ (1998) model that postulates outsider companies (those with a higher level of public finance) in weak equity–outsider markets (capital markets where public equity finance is not the dominant source of finance) are more likely to change their type of accounting system from one focused on information for creditors and tax authorities to one that meets the needs of external financiers. We found strong support for Nobes’ model. Using 408 German listed companies at 1999, we observed that companies with more outsider finance (the proportion of shares held by outsiders and the presence of public debt) were more likely to use international standards (U.S. GAAP or IAS). The results indicate the importance of controlling for source of finance at the company rather than country level in cross‐country studies investigating the benefits of adoption of international standards.     

Comparability: An analytic examination

Comparability is often invoked as an evaluative criterion in regulatory and financial reporting controversies. This article explores the issue by first developing a formal model of comparability that is consistent with the prior information economics literature regarding normative criteria. This model is then used in a restricted setting to explore how such criteria might eventually be used to establish preference relationships.     

Discussion of “Financial statement comparability and credit risk”

Comparability of financial statements has been a subject that is often referred to by academics and practitioners alike. In recent years, researchers have attempted to develop a quantifiable framework to study the benefits of comparability from the perspective of equity markets. Kim et al. (2013) approach this issue from the perspective of credit markets. This discussion of their paper has three objectives. First, it critiques their proxy for comparability and offers suggestions on how to validate their assumptions. Second, it recommends improvements to their research design, keeping in mind nuances of credit as an asset class. Finally, to help the authors with their future research, it offers proxies for comparability and information asymmetry that can be developed through some new datasets that have become available to researchers.     

Adoption of IFRS in Spain: Effect on the comparability and relevance of financial reporting

EU Regulation 1606/2002 requires application of International Financial Reporting Standards (IFRS) by groups listed on European stock markets. In Spain, listed groups are now obliged to prepare consolidated financial information under IFRS, and legislative changes to bring local rules into line with international standards have been tabled.In this context, the potential impact of IFRS is fraught with uncertainty. Our study of IBEX-35 companies focuses on the effects of the new standards on comparability and the relevance of financial reporting in Spain. We address these objectives by seeking significant differences between accounting figures and financial ratios under the two sets of standards (i.e. Spanish accounting standards and IFRS).The results obtained show that local comparability has worsened. The study reveals that local comparability is adversely affected if both IFRS and local accounting standards are applied in the same country at the same time. Reforms to bring local rules into line with international standards are therefore urgent. We also find that there has been no improvement in the relevance of financial reporting to local stock market operators because the gap between book and market values is wider when IFRS are applied. While there has been no gain in terms of the usefulness of financial reporting in the short-term, improved usefulness may be achieved in the medium to long-term.