CSR act as a substitute for each other in reducing 
equity capital costs. 
Several studies have endeavored to determine the 
effect of CSR reporting practices on CSR disclosure, 
while other studies have examined the influence of 
CSR disclosure on the cost of equity. The aim of this 
study is to combine the two approaches, i.e. to 
determine the effect of CSR reporting practices on 
CSR disclosure as well as the effect of CSR 
disclosures on the cost of equity capital.  
WarpPls 5.0 was used to analyze the data in this 
paper, with a study sample of 118 manufacturing 
companies in the period 2013–2015. The results 
show that companies using a standalone report and 
Global Reporting Initiative adoption as their CSR 
reporting practices disclose broader CSR 
information, and companies that use CSR assurance 
are not extensive enough in disclosing CSR 
information. Further, CSR disclosure affects the cost 
of equity capital in the sense that there is a negative 
influence between CSR disclosure and the cost of 
equity capital. It is expected that this research can 
contribute to the literature by providing empirical 
evidence on the use of three CSR reporting 
practices, i.e. CSR disclosure in relation to a 
standalone report and GRI adoption and CSR 
assurance, and their effect on the cost of equity 
capital. 
The remainder of this paper is organized as 
follows. The next section will present the literature 
review and hypotheses. This is followed by the 
research method in Section 3 and then the analysis, 
results, and discussion in Section 4. Finally, the 
paper will present conclusions, limitations, and 
suggestions for future research. 
2 LITERATURE REVIEW AND 
HYPOTHESIS 
2.1 Legitimacy Theory 
Legitimacy theory states that, since a company is 
part of society, it must pay attention to social norms. 
Ghozali and Chariri (2007) state that underlying the 
theory of legitimacy is the corporate social contract 
with the community, where the company operates 
and uses economic resources. From the perspective 
of legitimacy theory, firms will voluntarily report on 
their activities if management considers this to 
match the results expected in the broader society 
(Craig, 2000). With regard to legitimacy theory, all 
three practices of CSR are used to demonstrate an 
effective commitment to CSR and are therefore 
associated with improved disclosure quality or 
merely representing efforts to build an image of 
commitment to positively influence stakeholder 
perceptions (Michelon et al., 2015). Based on the 
above, the underlying theory for CSR disclosure is 
legitimacy theory, since the purpose of CSR 
disclosure is to obtain positive values and legitimacy 
from the community. 
2.2 Hypotheses 
2.2.1  Standalone Reporting and CSR 
Disclosure  
Trends in CSR disclosure and reporting practices 
show an increasing number of standalone reports 
(Cho et al., 2011). Companies that publish 
standalone CSR reports separate from annual reports 
seem to signal the company’s commitment to CSR 
issues (Mahoney et al., 2013). In addition, a 
standalone CSR report is considered capable of 
improving the quality of CSR disclosure (Dhaliwal 
et al., 2014). Therefore, the first hypothesis is as 
follows: 
H1: Standalone reporting is associated with 
corporate social responsibility disclosures. 
2.2.2  GRI Framework Adoption and CSR 
Disclosure 
The GRI reporting framework is a standard report 
within the framework of sustainability reporting 
(Michelon et al., 2015). Following the GRI reporting 
framework to compile CSR reports, CSR disclosures 
may increase (Mahoney et al., 2013). The majority 
of companies who communicate CSR disclosures 
have adopted this reporting framework. The GRI 
reporting template was created to guide companies 
in delivering information about the company and its 
quantitative or qualitative financial, environmental, 
and social performance indicators. Therefore, the 
second hypothesis is as follows: 
H2: GRI adoption is associated with corporate 
social responsibility disclosures. 
2.2.3  Assurance of CSR Information and 
CSR Disclosure 
The key element used to ensure the credibility of a 
sustainability report is external assurance, although 
external assurance is insufficient for avoiding 
criticisms relating to credibility (Adams & Evans, 
2004). Assurance is only limited to the perception of 
the company’s social and environmental image (Cho