1 Introduction
Digital finance is the process of using digital devices and digital technology to acquire,
use and distribute financial resources to economic agents such as individuals, households,
firms and government (Siddik and Kabiraj, 2020; Ozili, 2018). The use of digital
technology in finance began in the early 2000s during the dot.com bubble. Digital finance
innovations became prominent after the 2007 to 2009 global financial crisis as financial
institutions began to use digital technology to process cross border payments, to manage
customers’ account, to save cost and to maximise profits.
Generally, digital technology in finance has aided the rapid development of the
financial sector of many developed countries by increasing the speed of the transmission
of financial market information to investors, shareholders and other market participants,
and by increasing the speed of financial transactions and payments (Bech et al., 2017;
Shabsigh et al., 2020). In developing countries, the use of digital technology in finance
has helped to increase the size of remittance inflows and has contributed to high levels of
financial inclusion (Podolski, 2020; Emara and Zhang, 2021).
Digital finance, while being important, has also become the subject of enormous
debate. The debate is centred on five main themes: debate about the net welfare benefits
of digital finance (Ozili, 2018), debate about the structure and size of transaction cost
when using digital finance applications (Nagle et al., 2020; Gille, 2005), debate about
which aspects of finance should be digitised and which should not be digitised (Ozili,
2021a), debate about the voluntary or involuntary use of digital financial services (Ozili,
2021a), and debate about how to handle and secure the large data or ‘big data’ that arises
from digital financial transactions (Beaumont, 2019; Schiff and McCaffrey, 2017). These
debates have led to calls for more regulation, that is, to regulate the digital finance
ecosystem and enact legislation to protect users’ digital data. While these developments
are important from a safety point of view, they show that digital finance comes with some
issues. Consequently, providers and users of digital financial products and services need
to understand these issues, so that providers of digital financial products and services can
conveniently provide access to finance to users, and users can use digital financial
services safely and in an environment of trust.
Another important area, which is central to this paper, is the global developments in
digital finance in several parts of the world. Understanding these developments can help
us understand the determinants of digital finance and whether digital finance enhances
globalisation. Such knowledge can also help us gain some insight into whether digital
finance is evolving too fast and can help us make predictions about the future of digital
finance. Such knowledge can also provide insights about the risks of international digital
finance. To explore this important area of digital finance, this paper survey the existing
research on digital finance and it draws insight from real-world experience in digital
finance developments. This paper is one of the first papers to review the most recent
global developments in digital finance.
This review paper contributes to the literature in the following ways. Firstly, the
paper contributes to the literature that examines the role of the internet and digital
technology in finance. It contributes to this literature by exploring the potential to
increase access to finance for all economic agents through digital technology enabled by
the internet. Secondly, this paper contributes to the financial innovation literature. Studies
in this literature include Tufano (2003), Laeven et al. (2015), Bernier and Plouffe (2019),
etc. This paper contributes to this literature by showing that many financial innovations
are built using digital technology and rely on digital technology to function. Thirdly, this
paper contributes to the digital finance literature. Studies in this literature include
Gomber et al. (2017), Ozili (2018), etc. This paper contributes to the digital finance
literature by providing a much needed review of the state of digital finance research and
development, and it makes predictions about the future of digital finance in 10 to
20 years’ time from now.
To begin, Section 2 highlights the importance of digital finance. Section 3 highlights
the modern application of digital finance. Section 4 presents the international determinant
of digital finance. Section 5 presents a concise review of post-2010 digital finance
research in the literature. Section 6 identifies some of the developments in digital finance
around the world. Section 7 offers a prediction about the future of digital finance.
Section 8 suggests some directions for future research. Section 9 concludes.
2 Importance of digital finance
Why is digital finance important? Digital finance is important to modern finance for
many reasons. One, digital finance is important because almost all forms of financial
instruments in global financial markets are traded using digital financial platforms,
technologies or infrastructure (Moșteanu, 2019; Feyen et al., 2021). Two, digital finance
is important is because most of the disruptive innovations in finance today such as private
digital currency, cryptocurrency, embedded finance, internet finance, blockchain finance,
decentralised finance, artificial intelligence (AI) finance and central bank digital currency
(CBDC) are all the outcome of advancement in digital finance (An et al., 2021;
Wullweber, 2020; Zetzsche et al., 2020a; Ozili, 2019). Three, digital finance is important
because digital finance offers convenience to users by saving the time and transportation
cost that users would incur to visit a financial institution to perform basic financial
transactions (Nagle et al., 2020; Ozili, 2018). Four, digital finance is important because it
allows financial institutions to focus on improving the efficiency of their financial service
offering rather than spending too much time in resolving soft issues, e.g., human-side
issues (Wang et al., 2020). Five, digital finance is important because it can increase
financial inclusion by bringing unbanked adults into the formal financial sector through
digital devices so that they can have access to basic financial services (Ozili, 2018; Durai
and Stella, 2019; Ozili, 2021b). Finally, digital finance is important because it increases
consumption spending and investment thereby contributing to economic growth (Li et al.,
2020; Guo et al., 2021; Sadigov et al., 2020).
3 Modern developments in digital finance
Over the years, digital finance has evolved in remarkable ways. Today, digital finance
manifests through internet finance, Fintech finance, embedded finance, AI finance,
blockchain finance, decentralised finance, etc. Internet finance is a financial services that
is offered over the internet using a network which may be an analogue network or a
digital network. Internet finance facilitates financing, payment, investment, and
information intermediary services by the internet (Hou et al., 2016). Fintech finance is
financial services that is offered by financial technology companies. Fintech companies
use technology to enhance or automate financial services and processes which are then