333 Thai Industry Codes With No Medium or Large Firms (2026)
In short
333 of Thailand's 1,228 five digit TSIC industry codes have never produced a single medium or large company, as of 17 July 2026. That is 27.1 percent of every industry code in the registry. Together those 333 codes hold 15,234 companies, just 0.77 percent of the 1,986,709 Thai firms with a recorded size band. Manufacturing contributes 60 of the codes, more than any other section. These codes survive at 44.8 percent, worse than the 50.0 percent national rate but far ahead of the 24.5 percent rate inside the fully micro-only codes.
How many industry codes never grow past small business?
333 of Thailand's 1,228 five digit TSIC industry codes have never produced a medium or large company (DBD, 2026). Every registered firm inside those codes tops out at small, and in many of them nothing has ever passed micro either. That is 27.1 percent of every industry code in the national registry, better than one in four. The scale of that group in company terms is small. Those 333 codes hold 15,234 companies combined, just 0.77 percent of the 1,986,709 Thai firms carrying a recorded size band as of 17 July 2026. Split that total and 13,165 are micro and 2,069 are small, with zero medium and zero large in either bucket. 120 of the 333 codes have no small firms either, so every company inside them sits at micro. Max Data has already mapped that fully micro tier on its own page. Strip those 120 out and 213 codes remain where small businesses genuinely exist, holding 14,728 companies between them, yet still nothing bigger than small has ever registered. That 213 code group is the real small business ceiling, a tier distinct from having no bigger firms simply because no firms exist yet. All 21 lettered industry sections contain at least one of these 333 codes. Manufacturing carries the most, 60 of the 333, yet those 60 codes together hold only 1,988 companies, an average of roughly 33 each. The single busiest code on the list, TSIC 63120 in the information and communication section, counts 1,392 companies and only 79 are still active.
Where the 333 no-medium, no-large codes sit by industry section
- Manufacturing60
- Agriculture57
- Wholesale and retail trade37
- Information and communication23
- Other services20
- Transportation and storage17
- Education13
- Administrative and support13
- Human health and social work13
- Public administration12
- Arts and entertainment12
- Accommodation and food service10
- Construction9
- Professional, scientific and technical8
- Financial and insurance7
- Mining and quarrying6
- Water and waste5
- Electricity and gas3
- Households3
- Real estate3
- Extraterritorial2
Figures in number of TSIC codes.
Manufacturing and agriculture between them account for 117 of the 333 codes, but those codes carry only a few dozen companies each on average.
The eight busiest codes with no medium or large firm
| TSIC code | Section | Companies | Active | Survival rate |
|---|---|---|---|---|
| 63120 | Information and communication | 1,392 | 79 | 5.7% |
| 74901 | Professional, scientific and technical | 1,162 | 561 | 48.3% |
| 87301 | Human health and social work | 807 | 806 | 99.9% |
| 96305 | Other services | 632 | 131 | 20.7% |
| 88901 | Human health and social work | 459 | 263 | 57.3% |
| 11022 | Manufacturing | 438 | 22 | 5.0% |
| 41000 | Construction | 437 | 97 | 22.2% |
| 01611 | Agriculture | 420 | 203 | 48.3% |
Ranked by company count among the 333 codes, as of 17 Jul 2026.
Why a size ceiling matters
A code with zero medium and zero large firms is not automatically a dying industry. TSIC 87301 in the human health section proves that. It carries 807 companies and 806 are still active, a 99.9 percent survival rate that beats nearly every other industry code in Thailand, yet none of those 807 has grown past small. That points to a business model built for small local practices rather than one blocked by failure. Other codes on the list tell a harsher story. TSIC 63120 and TSIC 11022 both survive under six percent, so their size ceiling and their mortality problem are the same problem. Investors and OSMEP program designers reading a single average size figure for an industry can miss both stories. A ceiling with high survival signals a market that rewards staying small, worth studying rather than fixing. A ceiling with low survival signals a market that Thai entrepreneurs keep entering and mostly leaving before they ever get the chance to grow.
Definitions
- TSIC code
- A five digit Thailand Standard Industrial Classification code, the most detailed level at which the DBD registry classifies what a company does.
- Size band
- The DBD classification of a company as micro, small, medium, or large, based on registered capital and reported revenue.
- Small ceiling code
- A code used on this page for the 213 industry codes that contain both micro and small companies but have never recorded a medium or large one.
- Pooled survival rate
- Active companies divided by total companies across a group, weighted by company count rather than averaged code by code.
- Industry section
- One of the 21 lettered top-level categories of the TSIC system, such as manufacturing or agriculture, that groups related five digit codes together.
Assumptions
- Size band and active status reflect the DBD registry as of 17 July 2026 and can shift as companies file updated statements or change status.
- Five digit code names are not published in this dataset, so codes are described only by number and by their parent industry section letter.
- A code with very few companies can show an extreme survival rate from a handful of firms, so single code figures carry less statistical weight than the pooled totals.
Methodology
Figures are drawn from the Department of Business Development registry of Thai juristic persons as of 17 July 2026, aggregated by five digit TSIC industry code. A code counts here if its recorded count of medium companies and its recorded count of large companies are both zero, regardless of how many micro or small companies it holds. Size band, active and inactive status are DBD classifications at the time of query. Because five digit code names are not published in this dataset, codes are identified by number and by their one letter parent industry section only.
How we verified this
- Codes with count_medium = 0 and count_large = 0 in market_tsic_insight total 333 out of 1,228 five digit codes, 333 divided by 1228 equals 27.1 percent.
- Summing count_micro (13,165) and count_small (2,069) across those 333 codes gives 15,234, matching the summed entity_count for the same codes exactly.
- 15,234 divided by the national sized company total of 1,986,709 equals 0.77 percent.
- Summed active_count (6,832) divided by summed entity_count (15,234) gives a pooled survival rate of 44.8 percent, compared with the 50.0 percent national active share and the 24.5 percent rate reported for the 120 fully micro-only codes.
- Of the 333 codes, 120 have count_small = 0, matching the fully micro-only code count published on the sibling page, and the remaining 213 codes hold 15,234 minus 506 equals 14,728 companies.
- Section code counts across all 21 letters sum to 60+57+37+23+20+17+13+13+13+12+12+10+9+8+7+6+5+3+3+3+2 = 333.
References
- Department of Business Development. (2026). Registered juristic persons by industry classification and size band. Ministry of Commerce, Thailand. https://www.dbd.go.th/
- Office of Small and Medium Enterprises Promotion. (2020). Notification on the definition of micro, small, and medium enterprises. Office of the Prime Minister, Thailand. https://en.sme.go.th/en/page.php?modulekey=363
Frequently asked questions
How many Thai industry codes have no medium or large companies at all?
333 of Thailand's 1,228 five digit TSIC industry codes, 27.1 percent, have never recorded a single medium or large company, as of 17 July 2026.
Is this the same as the industries that are entirely micro businesses?
No. 120 of the 333 codes are entirely micro with no small firms either, and that group is covered on a separate page. The other 213 codes do contain small companies, 14,728 of them, but still nothing bigger than small.
Which industry section has the most codes stuck below medium size?
Manufacturing, with 60 of the 333 codes, followed by agriculture with 57. Both sections average only a few dozen companies per affected code.
Do these codes survive better or worse than average?
Worse on average. A pooled 44.8 percent of companies in these codes are active, below the 50.0 percent national rate, though individual codes vary widely, from 5.0 percent to 99.9 percent.
Cite this page
Chatpong L. (2026). 333 Thai Industry Codes With No Medium or Large Firms (2026). Max Data Insights. https://maxdatathailand.com/insights/thai-industry-codes-with-no-medium-or-large-companies-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.
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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.