Thailand vs South Korea: Corporate Registry Size Compared 2026
In short
Thailand's company registry held 1,989,709 firms as of 17 July 2026. Only 50.0 percent of those companies carry an active classification. South Korea's National Tax Service counted 1,302,000 operating corporate registrants at the end of 2023, a smaller raw count but a much tighter fit to reality. Thailand's registry runs 1.53 times larger than Korea's in raw terms. Yet 79.2 percent of Korea's registered corporations actually filed a tax return that year. That sits far above Thailand's active share. Both countries keep registries in the low millions. What differs is how aggressively each one clears out companies that stopped operating.
How does Thailand's registry size compare to South Korea's?
Thailand's Department of Business Development held 1,989,709 registered companies as of 17 July 2026, according to DBD sourced aggregate data. Of those, 1,986,709 carry a recorded size band and form the true base for measuring activity. Only 993,373 of that base carry an active classification. That works out to exactly 50.0 percent. South Korea's National Tax Service counted 1,302,000 corporate business registrants still operating at the end of 2023. Individual proprietors bring Korea's combined business registrant count to 9,950,000. Corporations make up 13.1 percent of that combined total. Line up the two registries in raw terms and Thailand's count runs 1.53 times larger than Korea's. Look past the raw count and the story flips. Of Korea's 1,302,000 registered corporations, 1,031,000 actually filed a corporate tax return for 2023. That is a filing share of 79.2 percent, nearly 30 points above Thailand's active share. Two registries land in the same rough size class, low millions apiece. Yet one confirms barely half its companies as active, and the other confirms roughly four in five as filing.
Registered versus confirmed-active companies, Thailand and South Korea
- Thailand, total registered2
- Thailand, active1
- South Korea, operating registrants1
- South Korea, tax filers1
Figures in million companies.
Thailand's raw registry is larger, but a smaller share of it is confirmed active than in South Korea.
Thailand and South Korea, registry scale side by side
| Metric | Thailand | South Korea |
|---|---|---|
| Companies on the registry | 1,989,709 | 1,302,000 |
| What is being counted | Juristic persons on file with the DBD, active or dormant | Corporate registrants the NTS records as still operating |
| Companies confirmed active | 993,373 | 1,031,000 |
| Active or filing share | 50.0% | 79.2% |
| Corporations as a share of all business registrants | 100.0% | 13.1% |
Thailand figures as of 17 Jul 2026. South Korea figures for the 2023 tax year, the most recent published.
Why this matters
The gap is not a case of Thai companies failing more often than Korean ones. It is a case of two registries built on different rules for what gets removed. Thailand's DBD puts a company on file the moment it incorporates and leaves it there indefinitely unless someone files for formal deregistration, so a company that stopped operating a decade ago can still sit inside the 1,989,709 total. South Korea's Commercial Act takes a different approach under Article 520-2. Any company that files no registration change for five straight years gets a public notice from the court registry. It is dissolved by default two months later if nobody responds. Full deemed liquidation follows after three more years of silence. That single clause keeps pruning Korea's registry on a rolling basis, and it is a large part of why Korea's filing share sits so much closer to full participation than Thailand's active share does. A registry's raw size tells you how many companies were ever formed. Its active share tells you how many of them are still worth counting as a market. By that second measure, Thailand's headline number of nearly two million looks smaller than it first appears.
Definitions
- Active company
- In Thailand's registry, a company that carries a current size band classification in DBD data, distinct from a dormant company that remains on file but shows no such classification.
- Dormant company
- A company still on Thailand's DBD registry that has not been formally deregistered but carries no current size band classification, so it cannot be confirmed as operating.
- Size band
- DBD's classification of a company as micro, small, medium or large, assigned only to companies with data recent enough to classify.
- Corporate business registrant
- South Korea's National Tax Service term for an incorporated business recorded as operating, as opposed to an individual proprietor, in its business registration statistics.
- Deemed dissolution
- Under Article 520-2 of South Korea's Commercial Act, the automatic dissolution of a company by court registry notice after five years with no registration filing, followed by deemed liquidation after three further years of inactivity.
Assumptions
- South Korea's 2023 figures are the most recent full year published by the National Tax Service and are roughly a year older than Thailand's 17 July 2026 data, since Korea's corporate tax statistics are released with a lag.
- Korea's operating corporate registrant count already excludes formally closed businesses by NTS definition, so its filing share and Thailand's active share measure related but not strictly identical concepts.
- Thailand's registered total includes both active and dormant companies unless formally deregistered, while South Korea's total already reflects periodic removal of dormant companies under the Commercial Act.
- Korea's business registrant totals cover individual proprietors and corporations together, while Thailand's DBD registry counts only juristic persons, so the corporate share comparison in the table describes different national systems rather than one shared category.
Methodology
Thailand figures are drawn from the DBD sourced market_national_insight and market_tsic_insight aggregate tables as of 17 July 2026. Registered means every juristic person on file with the Department of Business Development, active or dormant, unless formally deregistered. Active means the company carries a current size band classification in DBD data. South Korea figures are drawn from National Tax Service business registrant and corporate tax filing statistics for the 2023 tax year, the most recent full year published as of this writing, reported through Korea Development Institute economic education material that summarizes the NTS releases. Korea's operating corporate registrant count already excludes formally closed businesses by NTS definition, so its filing share measures a related but not identical gap to Thailand's active share, and the two percentages should be read as directional evidence of registry design rather than a single unified metric.
How we verified this
- Active share: 993,373 divided by 1,986,709 equals 0.5000, confirming Thailand's active share of exactly 50.0 percent.
- Sum check: 993,373 plus 993,336 equals 1,986,709, matching the total companies with a size band.
- Raw size ratio: 1,989,709 divided by 1,302,000 equals 1.528, confirming Thailand's registry runs about 1.53 times the size of Korea's operating corporate registrant count.
- Korea filing share: 1,031,000 divided by 1,302,000 equals 0.7918, confirming a 79.2 percent filing share among Korea's operating corporate registrants.
- Korea corporate share of all registrants: 1,302,000 divided by 9,950,000 equals 0.1308, confirming corporations make up 13.1 percent of Korea's total business registrant population.
- Korea filer sum check: 652,000 profit filers plus 379,000 loss filers equals 1,031,000, matching the total 2023 corporate tax filer count, with profit filers at 63.2 percent.
- Gap check: 79.2 minus 50.0 equals 29.2 percentage points, the size of the active-share divergence between the two registries.
References
- Department of Business Development. (2026). Registered juristic persons and financial statement aggregates. Ministry of Commerce, Thailand. https://www.dbd.go.th/
- National Tax Service, Korea. (2024, June 24). 2023 corporate tax filers reach 1.031 million for the first time [Korean]. Korea Development Institute Economic Information and Education Center. https://eiec.kdi.re.kr/policy/materialView.do?num=253183
- National Tax Service, Korea. (2024, June 12). Active business registrants approach 10 million, up 23.7 percent from 2019 [Korean]. Korea Development Institute Economic Information and Education Center. https://eiec.kdi.re.kr/policy/materialView.do?num=252596
- Korea Ministry of Government Legislation. (n.d.). Commercial Act, Article 520-2, dissolution of dormant companies. Korea Statutes Information Center. https://www.law.go.kr/LSW/lsLinkProc.do?lsClsCd=L&lsNm=%EC%83%81%EB%B2%95&efYd=19910430&mode=11&joNo=052002&lnkJoNo=undefined&lsId=prec19910430
Frequently asked questions
Does Thailand or South Korea have more registered companies?
Thailand does in raw count. Its DBD registry held 1,989,709 companies as of 17 July 2026 against South Korea's 1,302,000 operating corporate registrants at the end of 2023, a gap of 1.53 times.
Which country has a higher share of active companies?
South Korea. About 79.2 percent of its registered corporations filed a tax return in 2023, versus 50.0 percent of Thailand's registry carrying an active classification.
Why is Thailand's active share so much lower?
Thailand's DBD keeps a company on file indefinitely once it incorporates unless someone files for formal deregistration. South Korea's Commercial Act instead lets courts dissolve a company by default after five years with no registration filing, which keeps more of its registry current.
Cite this page
Chatpong L. (2026). Thailand vs South Korea: Corporate Registry Size Compared 2026. Max Data Insights. https://maxdatathailand.com/insights/thailand-vs-south-korea-corporate-registry-size-2026
Data & corrections
Download the data (CSV)Spot something off, or want to ask about the data? Email insights@maxsolutions.co.th. We publish corrections.
Written by
Chatpong L.Founder, Max Data, Max Solutions Co., Ltd.
Chatpong L. leads Max Data, a company-intelligence platform built on Thailand's official business registry. He writes about the structure of the Thai economy using primary registry data. His work covers company formation, industry concentration, and regional business activity.
Related insights
This page reports company-level and aggregate statistics only. It names no individuals and makes no claims about any person. Figures are provided for information and may be revised as source data updates.