# UEN (Unique Entity Number)

https://www.uniwebpay.com/glossary/uen/

*Last updated: 2026-08-03*

The single identifier every entity registered in Singapore has — companies, sole proprietorships, societies and government bodies alike. It is what identifies a business across government agencies and across most commercial onboarding, and it is the first field on almost every merchant application.

## Why it matters to a merchant

The single fastest thing you can do to shorten an application is have this correct and to hand, along with the ACRA profile it appears on. It is also worth checking that the entity behind your UEN is the entity whose name you trade under — where those differ, every downstream document will ask about it, and knowing the answer in advance turns a week into an afternoon.

## Related terms

*Licensing and regulation in Singapore*

- [MAS (Monetary Authority of Singapore)](https://www.uniwebpay.com/glossary/mas/)
- [Payment Services Act 2019](https://www.uniwebpay.com/glossary/psa-2019/)
- [MPI (Major Payment Institution)](https://www.uniwebpay.com/glossary/mpi/)
- [SPI (Standard Payment Institution)](https://www.uniwebpay.com/glossary/spi/)
- [MAS Financial Institutions Directory](https://www.uniwebpay.com/glossary/fid/)
- [KYC / KYB](https://www.uniwebpay.com/glossary/kyc-kyb/)
- [Beneficial owner](https://www.uniwebpay.com/glossary/beneficial-owner/)
- [PCI DSS](https://www.uniwebpay.com/glossary/pci-dss/)
- [Merchant Acquisition (licensed activity)](https://www.uniwebpay.com/glossary/merchant-acquisition/)
- [ACRA](https://www.uniwebpay.com/glossary/acra/)
- [PDPA (Personal Data Protection Act)](https://www.uniwebpay.com/glossary/pdpa/)
- [AML / CFT](https://www.uniwebpay.com/glossary/aml-cft/)

- [All 74 terms](https://www.uniwebpay.com/glossary/)

---

*This is the Markdown mirror of https://www.uniwebpay.com/glossary/uen/, generated from the same source as the page itself. The whole site in one file: https://www.uniwebpay.com/llms-full.txt · What this company is, for answer engines: https://www.uniwebpay.com/llms.txt*