Korea abolished its old government-accredited certificate regime in 2020. It did not abolish the Korean Corporate Digital Certificate. That distinction explains why a foreign director can be told that the old 공인인증서 is gone and, days later, be asked to obtain a certificate for corporate banking, an electronic contract, tax administration or another Korean business system. The apparent contradiction is real, but the explanation is straightforward: the law changed faster than the corporate infrastructure built around certificates.
For foreign-invested companies, this is more than a terminology problem. A Korean corporation may now encounter Joint Certificates, Financial Certificates, OTP devices and newer simple-authentication services, sometimes within the same operating environment. In 2026, the National Tax Service made an important move away from paid certificates by introducing business simple authentication for Hometax. But that does not mean the corporate certificate has disappeared. It means Korea is now operating several generations of authentication at the same time.
1. Korea Abolished the Old Certificate Regime, Not Digital Certificates
The revised Electronic Signature Act took effect on December 10, 2020. The reform abolished the former accredited certificate system, known in Korean as Korean Corporate Digital Certificate (공인인증서), and removed the special legal status that had distinguished government-accredited certificates from other electronic-signature methods.
What disappeared was the privileged framework—not certificate-based authentication itself.
After the reform, certificate services continued in the form of Joint Certificates, alongside Financial Certificates and other private electronic-signature methods. Korean banks, government platforms and business systems therefore continued to use digital certificates even after the old accredited system had formally ended.
This is where much of the confusion comes from.
Saying that Korea “abolished digital certificates” is inaccurate. A better way to understand the 2020 reform is:
Korea abolished the special legal status of the old accredited certificate system. It did not abolish digital certificates.
That distinction still matters in 2026 because Korean companies continue to encounter certificate-based authentication across banking, tax, contracting and other business systems.
2. A Corporate Bank Account Does Not Mean Your Digital Setup Is Finished
Foreign directors often assume that once a Korean corporate bank account is open, the difficult part is over.
Operationally, that is not always the case.
A Korean corporate banking setup may involve several separate elements:
**Corporate bank account
- Corporate internet banking
- OTP or another security device
- Joint or Financial Certificate
- Separate credentials for tax or government systems**
These are not interchangeable.
A bank account holds the company’s funds. An OTP is generally an additional authentication mechanism used for certain transactions. A Digital Certificate can serve as an electronic identity and signing credential.
The simplest analogy is:
Bank account = the vault
Digital Certificate = the identity and key
OTP = the second lock
Not every bank or transaction uses exactly the same combination. That is precisely why foreign directors should avoid treating “the certificate” and “the OTP” as two names for the same thing.
3. Why Are There Different Corporate Certificates?
The practical confusion starts when a company sees several certificates with dramatically different prices.
For businesses, certificates may be limited to a particular purpose or issued for broader use. The National Tax Service currently cites annual fees of KRW 4,400 for electronic-tax Joint or Financial Certificates and KRW 110,000 for a universal Joint Certificate.
A practical comparison looks like this:
| Certificate | Typical Use | Typical Annual Cost |
|---|---|---|
| Banking-purpose certificate | Corporate banking and specified financial services | Approx. KRW 4,400 |
| Electronic-tax certificate | Electronic tax invoice functions | KRW 4,400 |
| Universal business Joint Certificate | Broader corporate electronic transactions | KRW 110,000 |
The difference is not that the KRW 110,000 certificate is technically “better.”
It is broader.
Korea Information Certificate Authority currently lists its universal business certificate at KRW 110,000 including VAT, with stated uses including electronic contracts, electronic bidding and electronic tax invoices.
4. Does a Korean Company Really Need the KRW 110,000 Certificate?
There is no general legal rule requiring every Korean corporation to purchase a KRW 110,000 universal certificate.
In practice, however, the universal business certificate is often the more sensible setup for an operating company.
A new subsidiary may initially expect to use only corporate internet banking and Hometax. Six months later, it may need to execute an electronic contract, use a procurement platform, participate in an electronic bidding process or access another business service with different authentication requirements.
A purpose-limited certificate may work perfectly for the task it was designed for. The problem appears when the company moves outside that scope.
For a business dealing with several Korean systems, the relevant comparison is therefore not simply KRW 4,400 versus KRW 110,000.
It is the annual certificate cost versus the inconvenience of discovering, during a time-sensitive transaction, that the credential currently held by the company is not accepted.
This is not a statutory requirement. It is an operational decision.
For companies expecting to use multiple banking, contracting, procurement or administrative systems, the broader compatibility of a universal business certificate often justifies the additional cost.
5. Foreign Directors Face an Extra Layer of Friction
This is where the issue becomes distinctly different for foreign-invested companies.
Korea Electronic Certification Authority currently offers a non-face-to-face application route for universal business certificates. However, its eligibility notice expressly states that foreigners cannot use that particular non-face-to-face application process. The restriction also applies to proxies and businesses with two or more representatives.
That does not mean a foreign representative cannot obtain a business certificate.
The same certification authority separately states that a foreign national can complete identity verification using an Alien Registration Card.
The distinction is important.
A process that may be completed entirely online by an eligible Korean representative may require a different route for a foreign director. If the representative is based overseas or travels to Korea infrequently, what appears to be a minor administrative step can become a scheduling issue.
This is one reason certificate planning should be addressed when setting up the company’s banking and administrative infrastructure, rather than after an urgent transaction appears.
6. The Terminology Is Often Harder Than the Technology
A foreign director may encounter all of the following within a short period:
Joint Certificate. Universal Business Certificate. Electronic-Tax Certificate. Financial Certificate. OTP. Simple Authentication.
The terms sound as though they belong to one neat hierarchy. They do not.
One useful way to understand the landscape is that a universal business certificate and an electronic-tax certificate are types of certificates with different scopes, while Financial Certificates, OTPs and simple authentication belong to related but distinct authentication mechanisms.
Even Korean institutions sometimes use terminology inherited from the pre-2020 system in everyday communication.
For a foreign executive, memorizing every Korean authentication term is rarely productive.
The better question is:
What transaction is the company trying to complete, and which credential does that particular system accept?
That question usually resolves the issue much faster.
7. Is Korea Finally Moving Beyond Corporate Certificates?
In tax administration, the answer is increasingly yes.
In April 2026, the National Tax Service introduced business simple authentication based on a business registration number. Corporate businesses can now use the service for Hometax and for issuing electronic tax invoices. The service is currently available through participating banking apps identified by the NTS, including KakaoBank, IBK and KB Kookmin Bank.
The change is significant because certificate use was still dominant immediately before the reform.
According to the NTS, 83% of Hometax businesses used Joint Certificates and another 1% used Financial Certificates when issuing electronic tax invoices. Combined, that meant 84% were still relying on those certificate-based methods.
Hometax is therefore beginning to move beyond paid certificates.
Korean corporate operations as a whole have not yet done so.
FAQ
Did Korea abolish the public certificate in 2020?
Yes, if by “public certificate” you mean the former accredited certificate regime. Certificate-based authentication itself was not abolished.
Is an OTP the same as a corporate Digital Certificate?
No. They serve different authentication functions and may be required separately depending on the bank or transaction.
Does every Korean company need a KRW 110,000 universal certificate?
No. It is not a statutory requirement. However, companies using several Korean business systems may find its broader scope more practical than maintaining narrowly limited certificates.
Can a corporation use simple authentication on Hometax in 2026?
Yes. Since April 2026, corporate businesses have been able to use business simple authentication for Hometax and electronic tax invoice issuance.
Conclusion
The Korean Corporate Digital Certificate did not disappear in 2020. What disappeared was the privileged legal framework surrounding its predecessor. Six years later, Korea has a much broader authentication market, but certificate-based credentials remain part of day-to-day corporate operations. The new Hometax simple-authentication system is a meaningful shift, yet it should not be mistaken for the end of the corporate certificate.
For a foreign director, the sensible approach is not to ask whether Korea still “has” certificates. The better question is which credentials the Korean entity will need across banking, tax, contracting and other business systems—and whether those credentials can be obtained before they become urgent. Behalf Korea helps foreign-invested companies build the banking, tax and back-office infrastructure required to make a Korean entity genuinely operational, not simply incorporated on paper.
