UPDATE 4-Singapore digital bank race heats up with 21 licence bidders

* Singapore receives 21 applications for bank licences

* Most bidders apply in consortiums

* Firms combine banking, tech expertise and capital

* Up to 5 successful applicants to be announced in June (Adds name of Xiaomi, number of companies involved, paragraphs 3,4)

By Anshuman Daga

SINGAPORE, Jan 7 (Reuters) - Singapore has drawn huge interest from technology firms looking to shake up the city-state's banking landscape, attracting 21 applications for five digital bank licences on offer.

Among firms bidding are Alibaba Group affiliate Ant Financial, a venture between Singapore Telecommunications and Southeast Asian ride-hailer Grab, and a consortium led by gaming firm Razer.

Singapore-based internet firm Sea Ltd, a group led by Singapore tycoon Ron Sim's firm V3 Group, and Hong Kong financial services group AMTD's consortium, which includes an affiliate of Xiaomi, has also applied.

Roughly 50 companies are involved in the bidding, sources told Reuters.

Singapore's banking liberalisation is its biggest in two decades and follows similar moves in Hong Kong, which issued eight online banking licences last year.

The Monetary Authority of Singapore (MAS) said it received strong interest from a diverse group of applicants but did not name them. Seven bidders are for retail banks and the rest are for wholesale banks.

"These include e-commerce firms, technology and telecommunications companies, FinTechs (such as crowd-funding platforms and payment services providers) and financial institutions," the MAS said on Tuesday.

The online-only banks are expected to operate at lower costs and offer services that differ from local incumbents such as DBS Group and OCBC.

Firms have joined forces to combine banking and technology expertise and meet local licensing requirements, which are generally stricter than other markets such as Hong Kong. Retail bank licence holders, for example, will need S$1.5 billion ($1.1 billion) in paid-up capital.

Some contenders hope deep customer data combined with new technology will help them win customers in Singapore, which has over 150 deposit-taking institutions and about $2 trillion in total assets under management.

"One of the key motivations for seeking a Singapore digital bank license is that it is easier to demonstrate a proven track record and regional connectivity to other regulators in ASEAN where digital banks are going to be available in coming time," said Varun Mittal, who heads the emerging markets fintech business at consultancy EY.

Singapore is issuing up to two retail and three wholesale bank licences.

Accredited retail digital banks will be able to accept deposits from and offer services to both retail and non-retail customers, although they must be headquartered in Singapore and controlled by Singaporeans.

Wholesale banks will mostly serve small and medium enterprises (SMEs) and will not be subject to local control restrictions.

Singapore will announce the winners in June and digital banks are set to start operations in a phased manner from mid-2021. ($1 = 1.3487 Singapore dollars) (Reporting by Anshuman Daga, additional reporting by Aradhana Aravindan; Editing by Tom Hogue, Sam Holmes and Himani Sarkar)