Thailand's Top vs Bottom Revenue Quartile Provinces 2026
In short
Thailand's top revenue quartile, 19 provinces led by Bangkok, Samut Prakan and Chon Buri, holds 93.6 percent of the 80.06 trillion baht in provincial company revenue as of 17 July 2026. The bottom quartile, another 19 provinces led by Yala, holds just 0.8 percent, worth 618.2 billion baht combined. That is a 121 times gap between the two groups. Company count concentrates far less sharply, at 82.0 percent for the same top group. Bangkok alone out earns the other 76 provinces put together.
What separates the top quartile from the bottom quartile?
Rank Thailand's 77 provincial jurisdictions by total company revenue and cut the list into four equal groups, and the split turns out to be extreme. The top quartile, 19 provinces led by Bangkok, Samut Prakan and Chon Buri, holds 93.6 percent of the 80.06 trillion baht in provincial revenue as of 17 Jul 2026 (DBD, 2026). The bottom quartile, another 19 provinces led by Yala, holds just 0.8 percent, worth 618.2 billion baht in total. Divide one figure by the other and the gap runs 121.3 times over. Even the weakest earner inside the top group clears the strongest earner in the bottom group by a wide margin. Khon Kaen, the smallest revenue producer among the top 19, still books 7.6 times the revenue of Yala, the largest producer among the bottom 19. Company headcount tells a gentler story. The same top quartile holds 82.0 percent of registered companies, a large share but nowhere near as extreme as its revenue share. Money concentrates harder than headcount does.
Provincial revenue by quartile
- Top quartile, ranks 1 to 1993.6%94
- Upper middle, ranks 20 to 394.0%4
- Lower middle, ranks 40 to 581.5%2
- Bottom quartile, ranks 59 to 770.8%1
Almost every baht sits in the first slice. The bottom half of provinces barely shows up on the chart.
Top and bottom quartile provinces by revenue
| Rank | Province | Quartile | Revenue, billion baht | Companies |
|---|---|---|---|---|
| 1 | Bangkok | Top | 50,545 | 812,799 |
| 2 | Samut Prakan | Top | 4,822 | 97,609 |
| 3 | Chon Buri | Top | 3,811 | 127,023 |
| 4 | Rayong | Top | 3,201 | 33,083 |
| 5 | Pathum Thani | Top | 2,099 | 81,256 |
| 6 | Nonthaburi | Top | 1,619 | 102,370 |
| 7 | Phra Nakhon Si Ayutthaya | Top | 1,494 | 20,425 |
| 8 | Samut Sakhon | Top | 1,341 | 31,030 |
| 9 | Chachoengsao | Top | 849 | 13,799 |
| 10 | Nakhon Pathom | Top | 736 | 27,359 |
| 68 | Sukhothai | Bottom | 36 | 3,758 |
| 69 | Yasothon | Bottom | 35 | 3,633 |
| 70 | Nan | Bottom | 30 | 3,928 |
| 71 | Uthai Thani | Bottom | 29 | 2,099 |
| 72 | Phayao | Bottom | 28 | 4,408 |
| 73 | Trat | Bottom | 26 | 3,331 |
| 74 | Satun | Bottom | 25 | 2,110 |
| 75 | Amnat Charoen | Bottom | 21 | 2,288 |
| 76 | Bueng Kan | Bottom | 18 | 2,326 |
| 77 | Mae Hong Son | Bottom | 6 | 1,569 |
The ten highest and ten lowest ranked provinces out of 77, by total company revenue, as of 17 Jul 2026.
Why this matters
A single national revenue figure hides that four out of five provinces add almost nothing to the total, and a median or a concentration score does not show how top heavy the distribution really is. A quartile split does. Add up every province except Bangkok and the sum still falls short of Bangkok alone, 29.51 trillion baht against 50.55 trillion baht, a ratio of 1.71 times. Investment, credit and skilled labor tend to follow revenue that already exists, so this pattern is more likely to harden than to fade on its own. Thailand's National Economic and Social Development Council has tracked a related widening in output per person across provinces, where the gap between the richest and poorest province grew from 14.5 times in 2021 to 16.5 times in 2024 (NESDC, 2024). Registered company revenue and gross provincial product are different measures, but they point the same direction. Anyone planning market entry, credit allocation or regional policy in Thailand is really working with two economies, a top quartile that runs in the trillions and a bottom quartile still counting in the billions.
Definitions
- Quartile
- One of four equal sized groups formed by ranking a list from highest to lowest. The top quartile is the highest ranked fourth of provinces, the bottom quartile is the lowest ranked fourth.
- Total revenue
- The sum of reported revenue from the most recent filed financial statement of every registered company assigned to a province.
- Aggregate share
- A group's combined value divided by the combined value of all groups, rather than an average of each member's individual share.
- Median province
- The province that sits at the exact midpoint of the ranked list, with as many provinces scoring higher as scoring lower.
Assumptions
- Revenue is attributed to the province where a company is registered, not necessarily where all of its operations take place, so a province hosting a large single site headquarters can look more concentrated than a plant level view would show.
- Quartile groups are not perfectly equal in size because 77 provinces do not divide evenly by four, so the top and bottom groups each hold 19 provinces while the two middle groups hold 20 and 19.
- Only companies with a filed financial statement contribute to total revenue, so provinces with lower filing rates could be undercounted relative to their true economic size.
Methodology
Provinces are ranked by total reported company revenue drawn from the DBD registry as of 17 July 2026, then split into four groups of roughly 19 provinces each, the top and bottom groups being the quartiles this page compares. Revenue is the sum of company level figures from each entity's most recent filed financial statement, attributed to the province where the company is registered. Two small non province categories covering unassigned or overseas registrations, together under 600 entities, are excluded from the 77 province base. The four groups are not perfectly even in size because 77 does not divide evenly by four, so the two middle groups hold 20 and 19 provinces while the top and bottom groups hold 19 each.
How we verified this
- Summed total_revenue for the 19 top ranked provinces, 74,964,626,894,886 baht, divided by the 77 province total of 80,057,095,437,018 baht, for a 93.64 percent share.
- Summed total_revenue for the 19 bottom ranked provinces, 618,165,983,227 baht, a 0.77 percent share of the same total.
- Divided the top quartile total by the bottom quartile total, 74,964,626,894,886 over 618,165,983,227, for a 121.3 times gap.
- Summed entity_count for the top 19 provinces, 1,628,545 of 1,986,137 total companies, an 82.00 percent share, confirming revenue concentrates harder than company count.
- Subtracted Bangkok's 50,545,042,342,775 baht from the 77 province total to get 29,512,053,094,243 baht for the other 76 provinces combined, so Bangkok alone exceeds every other province put together by 1.71 times.
- Compared rank 19, Khon Kaen at 352,018,152,705 baht, against rank 59, Yala at 46,162,119,014 baht, for a 7.6 times gap between the two quartile boundary provinces.
- Confirmed the four quartile revenue shares sum to 100 percent, 93.64 plus 4.04 plus 1.54 plus 0.77.
References
- Department of Business Development. (2026). Registered juristic persons and financial statement aggregates. Ministry of Commerce, Thailand. https://www.dbd.go.th/
- National Economic and Social Development Council. (2024). Gross regional and provincial product report. Office of the National Economic and Social Development Council, Thailand. https://www.nesdc.go.th/en/info/national-accounts/
Frequently asked questions
Which provinces are in Thailand's top revenue quartile?
The top 19 of 77 provinces by total company revenue, led by Bangkok, Samut Prakan, Chon Buri, Rayong and Pathum Thani, together holding 93.6 percent of provincial revenue as of 17 July 2026.
How much revenue does the bottom quartile of provinces earn?
The bottom 19 provinces, led by Yala, Phang Nga and Nong Khai, earn 618.2 billion baht combined, just 0.8 percent of the provincial total.
Is the gap between quartiles the same for company count as for revenue?
No. The top quartile holds 82.0 percent of registered companies but 93.6 percent of revenue, so revenue concentrates more tightly than company count.
Does Bangkok alone outweigh the rest of Thailand?
Yes. Bangkok's 50.55 trillion baht in company revenue exceeds the combined 29.51 trillion baht of all other 76 provinces, a ratio of 1.71 times.
Cite this page
Chatpong L. (2026). Thailand's Top vs Bottom Revenue Quartile Provinces 2026. Max Data Insights. https://maxdatathailand.com/insights/thailands-provinces-by-revenue-quartile-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.