Kalshi's taker fee is 0.07 × contracts × price × (1 − price), times the series multiplier (1 by default) and rounded up to the next cent, so it peaks at 1.75¢ per contract at a 50¢ price. Resting (maker) orders are free on standard series and pay a fee only on the series Kalshi lists with maker fees.
Country-by-country rules, regulator actions and sources for Polymarket and Kalshi.
This is not legal advice, and we don't say whether trading is legal for you in Thailand. We report what each platform's published rules say about Thailand and the public regulator, court and police actions we could source, each with a date. Those rules change fast, so check the platform's current terms and the law in Thailand before doing anything. ‘Not listed’ only means a platform's own list doesn't name Thailand; it doesn't mean trading there is permitted.
Status under each platform's own published rules, and the most recent public action we could source, as of 2026-09-24.
Last public action: 2025-01-14 · Cyber Crime Investigation Bureau (Royal Thai Police) · Public warning or intervention (Polymarket)
Source: Secondary report
Dated public actions on record: 1
This page keeps two things apart for Thailand: what each platform's own published rules say, and what regulators, courts and police in Thailand have publicly done. A platform's list is its own policy and a government order is the government's, so a country can be on one and not the other.
The status labels are the same as in the main table. Restricted means the platform's own list blocks trading from Thailand. Close-only means existing users there can close positions but can't open new ones. Some regions means only named regions are restricted. Separate product means residents use a different, separately regulated product, as US residents do with the Polymarket US app. Not listed means the platform's published list doesn't name Thailand; that is not the same as permitted, and a regulator may still block the site.
Polymarket publishes two official lists that don't fully match: its Help Center page (updated August 14, 2026) and its developer docs (undated). We follow the dated Help Center list and say where the developer docs differ. Kalshi statuses follow its Member Agreement as fetched on September 24, 2026; the agreement itself is undated.
Each action shows the authority as it names itself, what it did, the platform it concerns and the date: the date of the action where it was published, otherwise the date it was first reported. Every entry is marked Official, Platform document or Secondary report. Where only secondary reporting exists, we say ‘reported by’ and name the outlet; where official sources conflict, we report both.
‘No public action found’ means our searches found none, not that none exists. Nothing on this page says whether trading is legal for you: for that, check the platforms' current terms and the law in Thailand.
Polymarket's Help Center page on geographic restrictions, updated August 14, 2026, names Thailand twice: among the 39 countries it lists as blocked, and in its close-only group with Singapore, Poland and Taiwan, where ‘users may close their existing positions but cannot open new ones’. Its undated developer geoblock documentation puts Thailand in the tier that is close-only on both the website and the API. Because the close-only wording is the more specific rule and both documents agree on it, Thailand is Close-only for Polymarket under this site's labels. Polymarket has not published the date on which it applied that rule to Thailand, and we found no Polymarket blog post or notice naming Thailand.
In practice the restriction is Polymarket's own geoblock. We found no Thai ISP or DNS block of polymarket.com, no court or Ministry of Digital Economy and Society order, and no app-store removal. Polymarket still serves a Thai-language interface (polymarket.com/th, seen in search results on September 26, 2026). When Prachachat wrote on February 9, 2026 that Thai users ‘are blocked from access’ alongside 33 other countries, that matched Polymarket's own list, not a Thai order; likewise, when Indonesia's Komdigi listed Thailand on May 22, 2026 among countries that have applied access restrictions to Polymarket, that was a foreign government's characterisation, not evidence of a Thai order. ‘Blocked in Thailand’ headlines generally trace back to the January 2025 police proposal.
Thailand is on the list of 55 Restricted Jurisdictions in Section VI of Kalshi's Member Agreement (undated; fetched September 24, 2026), and it has been there since Kalshi's first international list in its Exchange Notice of October 23, 2025, repeated in the notice of November 4, 2025. Under this site's labels Thailand is Restricted for Kalshi: Kalshi's own agreement excludes people in Thailand, and it gives no country-specific reason. Kalshi's help center (updated March 20, 2026) says trading from outside the United States is subject to that agreement. We found no Kalshi blog post or notice naming Thailand, and no Thai regulator, court or police action naming Kalshi. Kalshi's rule for Thailand is therefore stricter than Polymarket's: Polymarket allows closing positions, Kalshi excludes the country outright.
Thailand has no regulator dedicated to prediction markets. The body that acted is the Cyber Crime Investigation Bureau (กองบัญชาการตำรวจสืบสวนสอบสวนอาชญากรรมทางเทคโนโลยี, บช.สอท., CCIB) of the Royal Thai Police, whose Commissioner, Pol. Lt. Gen. Trairong Phiwpan, together with Pol. Maj. Gen. Chusak Kanit and Pol. Col. Ratchatchoke Leewanitchkul, announced the Polymarket proposal. Website blocks are executed by the Ministry of Digital Economy and Society (MDES), normally on a court order under the Computer Crime Act B.E. 2550 (2007); its role in any Polymarket order is not documented. The Securities and Exchange Commission (ก.ล.ต.) regulates digital-asset businesses under the Emergency Decree on Digital Asset Businesses B.E. 2561 (2018) and had MDES block five unlicensed foreign crypto exchanges from June 28, 2025 (reported by CoinDesk, May 30, 2025), but we found no SEC statement on Polymarket or Kalshi. The general law is the Gambling Act B.E. 2478 (1935): players face a fine of THB 1,000–5,000 and/or up to one year's imprisonment under section 4, and operators three months to five years and THB 5,000–100,000 under section 4 bis, as summarised by the law firm Anglo-Siam Legal (page updated April 30, 2026; secondary). The police statement itself cited no statute.
January 14, 2025 (secondary reports): the CCIB announced that it was preparing to propose closing (เตรียมเสนอปิด) polymarket.com as an illegal online-gambling site that uses crypto-assets, ‘to protect citizens from online-gambling risks and stop crypto use in illegal activity’, and asked the public to avoid unlicensed websites, to be careful with improper use of crypto-assets and to report tips through the AOC 1441 hotline or thaipoliceonline.go.th. MGR Online and Siam Blockchain reported it on January 14, 2025, The Block on January 15, 2025 and the Bangkok Post in January 2025; every report describes a proposal, and none cites a court order, an MDES order or an effective date. That announcement is shown as Public warning or intervention in the timeline below. Our searches in Thai and English through September 26, 2026 found no blocking order that followed, no CCIB follow-up statement and no report of Thai ISPs blocking the site; that means we found none, not that none exists.
The proposal was aimed at the platform, not at users, and it has not been followed by any public order, fine, court ruling or court challenge, and there is nothing to lift. Thai press continues to describe Polymarket as ‘an online-gambling site that appears to fall foul of Thai law’ (Prachachat, February 9, 2026), which is the press's characterisation, not a ruling. The wider backdrop: in October 2024 the cabinet tasked MDES with a review of online-gambling law (Tilleke & Gibbins, October 8, 2024), and in 2025 the SEC extended its enforcement to foreign crypto platforms serving Thai users. We found no Thai action against Kalshi.
The entries below are rendered from the same dated data as the main country table, newest first. Each row shows the date, the authority as it names itself, the type of action, the platform it concerns and the source with its type.
| Date | Authority | Action | Platform | Source |
|---|---|---|---|---|
| 2025-01-14 | Cyber Crime Investigation Bureau (Royal Thai Police) | Public warning or intervention | Polymarket | Source Secondary report Checked 2026-09-26 Announcement of a proposal to close polymarket.com; no court, MDES or ISP blocking order found as of 2026-09-26. |
Public regulator, court and police actions concerning Polymarket and Kalshi in Thailand, as of 2026-09-24. Not legal advice.
This section reports what the law and the authorities in Thailand have said about people who take part in these markets, and any enforcement against users that has been made public. It describes; it doesn't advise.
We found no statement by a Thai authority about penalties for Polymarket or Kalshi users specifically. The CCIB's January 14, 2025 statement urged the public to avoid unlicensed websites but gave no penalty figures, and we found no prosecution of a Polymarket or Kalshi user in Thailand. Under the Gambling Act B.E. 2478 (1935), gambling by a player is itself an offence: section 4 provides a fine of THB 1,000–5,000 and/or up to one year's imprisonment, according to the law-firm summary cited above; the police did not say which provision they consider applicable. We found no Thai bank or licensed-exchange policy naming either platform, no Revenue Department statement on prediction-market winnings, and no statement from the Election Commission about Polymarket's Thai election markets.
Polymarket ran markets on Thailand's general election of February 8, 2026, including ‘Thailand Legislative Election Winner’ and ‘Next Prime Minister of Thailand’. Prachachat reported on February 9, 2026 about US$5.46 million in volume, with the People's Party at 72% on February 6; Siam Blockchain reported on January 4, 2026 that in early January the markets showed Pheu Thai at 73% to win and Anutin at 60% for prime minister (the difference is ordinary price movement, not a conflict between sources). We found no statement about these markets from the Election Commission (กกต.) or the police, and no sponsorship or partner product involving either platform in Thailand.
PolyKal is a read-only research site, and it does not restrict access by country, including from Thailand. Its public pages, including prices on both platforms, order-book depth, after-fee cost comparisons, the fee calculator, and large-trade and whale data, need no account. You don't need a VPN to use them.
Viewing public market data is not trading. PolyKal doesn't place orders, hold funds or give access to trading on either platform, and a restriction on Polymarket or Kalshi in Thailand still applies to trading there. Polymarket's help center says that using a VPN to get around its restrictions violates its Terms of Use, and Kalshi's Member Agreement excludes people in its restricted jurisdictions; getting around a block can also break local law. PolyKal doesn't help anyone get around them.
Start with the compare page, the fee calculator or large trades, or read how Polymarket works and how Kalshi works.
Thailand is one of 27 countries, plus the United States, that PolyKal tracks. The full availability table shows every country's status under each platform's rules and its regulator actions side by side, with the same dates and sources as this page, and its change log lists every edit we make.
Every entry is re-checked at least once a quarter, and sooner when a platform or regulator announces a change. The next scheduled full re-check is shown in the sidebar.
We found no Thai court or regulator ruling on it, and we don't decide it for you. What the record shows: the Cyber Crime Investigation Bureau said on January 14, 2025 that it would propose closing polymarket.com as illegal online gambling, without citing a statute; the Gambling Act B.E. 2478 (1935) makes gambling an offence for players as well as operators; and no order, ruling or prosecution has followed that we could find. Polymarket's own rules list Thailand as close-only and Kalshi's exclude Thailand. Check the current law and the platforms' current terms before doing anything.
Not by the Thai state, as far as we could find. Thai cyber police announced on January 14, 2025 that they would propose closing polymarket.com, but we found no court or MDES blocking order, no ISP block and no app-store removal through September 26, 2026. The restriction Thai users meet is Polymarket's own: its Help Center (updated August 14, 2026) lists Thailand as close-only, so existing positions can be closed but new ones can't be opened. Headlines saying Thailand ‘blocked’ Polymarket trace back to the police proposal or to Polymarket's own list.
Kalshi's own Member Agreement (Section VI, fetched September 24, 2026) lists Thailand as a restricted jurisdiction and has done so since its first international list of October 23, 2025, so Kalshi's contract excludes people in Thailand; Kalshi gives no reason. We found no Thai authority that has acted against Kalshi by name, but the Gambling Act described on this page doesn't distinguish between platforms.
Polymarket's Help Center (updated August 14, 2026) says that in Thailand ‘users may close their existing positions but cannot open new ones’, and its developer docs apply the same rule to both the website and the API. In other words, someone who already holds positions can close them, but no new position can be opened from Thailand under Polymarket's rules; the platform's help center also says that using a VPN to get around its restrictions violates its Terms of Use. See close-only, explained for the general definition.
Yes, on PolyKal. Its pages load from Thailand without an account and show prices, order-book depth and after-fee comparisons for both platforms, including Polymarket's Thai politics markets. Viewing data is not trading: PolyKal doesn't place orders or hold funds, and Polymarket's close-only rule, Kalshi's restriction and the legal positions described on this page still apply to trading.
No. Polymarket's help center says that using a VPN to get around its restrictions violates its Terms of Use, and Kalshi's Member Agreement excludes people in its restricted jurisdictions. Getting around a block can also break local law. You don't need a VPN to research these markets: PolyKal's prices, order books and fee calculator don't require one.
We re-check every country page at least once a quarter, and sooner when a platform or regulator announces a change; each rule and action on the page shows its own date and source. If you spot something out of date for Thailand, email [email protected] with a link to the new rule or order.
Every statement on this page rests on the sources below. Platform rules were checked against Polymarket's and Kalshi's own pages on September 24, 2026; regulator, court and police actions were checked against the sources listed on September 24–26, 2026. Each source is marked as official, a platform document or a secondary report. Where only secondary reporting was available, we cite it and say so; where official sources conflict, we report both. We re-verify this page quarterly.
MGR Online: cyber police prepare to propose closing Polymarket (ตำรวจไซเบอร์เตรียมเสนอปิด Polymarket), January 14, 2025. Secondary (Thai). Siam Blockchain: cyber police close to shutting down the Polymarket website, January 14, 2025. Secondary (Thai). The Block: Thailand proposes banning Polymarket amid online-gambling crackdown, January 15, 2025. Secondary. Bangkok Post: Singapore, Thailand move to block Polymarket, January 2025. Secondary.
Anglo-Siam Legal: gambling penalties in Thailand (Gambling Act B.E. 2478), updated April 30, 2026. Secondary (law-firm summary; not about either platform). Tilleke & Gibbins: Thailand amends online-gambling laws (cabinet review, October 2024), October 8, 2024. Secondary. CoinDesk: Thailand to block unlicensed foreign crypto exchanges from June 28, 2025, May 30, 2025. Secondary; not about prediction markets.
Prachachat: Polymarket and the Thai election markets (Thai users blocked alongside 33 other countries), February 9, 2026. Secondary (Thai). Siam Blockchain: Thai election odds on Polymarket, January 4, 2026. Secondary (Thai). Kalshi Exchange Notice: Updated Member Agreement (first restricted-jurisdiction list including Thailand), October 23, 2025. Platform document. ANTARA: Komdigi lists Thailand among countries restricting Polymarket, May 22, 2026. Secondary; a foreign government's characterisation.
Platform documents (all countries): Polymarket Help Center: Geographic restrictions (updated August 14, 2026), Polymarket developer docs: Geoblock (undated), Kalshi Member Agreement (undated; fetched September 24, 2026) and Kalshi Help Center: trading from outside the US (updated March 20, 2026).
PolyKal is an independent research tool. We are not affiliated with, endorsed by, or operated by Polymarket or Kalshi. We report each platform's published rules and public regulator, court and police actions in Thailand; we don't say whether trading is legal for you, and we don't help anyone get around a platform's restrictions. Last reviewed September 26, 2026. Not legal or financial advice.
Know of a newer rule, order or court decision for Thailand? Email [email protected] with a link to it.
Kalshi's taker fee is 0.07 × contracts × price × (1 − price), times the series multiplier (1 by default) and rounded up to the next cent, so it peaks at 1.75¢ per contract at a 50¢ price. Resting (maker) orders are free on standard series and pay a fee only on the series Kalshi lists with maker fees.
Country-by-country rules, regulator actions and sources for Polymarket and Kalshi.
This is not legal advice, and we don't say whether trading is legal for you in Thailand. We report what each platform's published rules say about Thailand and the public regulator, court and police actions we could source, each with a date. Those rules change fast, so check the platform's current terms and the law in Thailand before doing anything. ‘Not listed’ only means a platform's own list doesn't name Thailand; it doesn't mean trading there is permitted.
Status under each platform's own published rules, and the most recent public action we could source, as of 2026-09-24.
Last public action: 2025-01-14 · Cyber Crime Investigation Bureau (Royal Thai Police) · Public warning or intervention (Polymarket)
Source: Secondary report
Dated public actions on record: 1
This page keeps two things apart for Thailand: what each platform's own published rules say, and what regulators, courts and police in Thailand have publicly done. A platform's list is its own policy and a government order is the government's, so a country can be on one and not the other.
The status labels are the same as in the main table. Restricted means the platform's own list blocks trading from Thailand. Close-only means existing users there can close positions but can't open new ones. Some regions means only named regions are restricted. Separate product means residents use a different, separately regulated product, as US residents do with the Polymarket US app. Not listed means the platform's published list doesn't name Thailand; that is not the same as permitted, and a regulator may still block the site.
Polymarket publishes two official lists that don't fully match: its Help Center page (updated August 14, 2026) and its developer docs (undated). We follow the dated Help Center list and say where the developer docs differ. Kalshi statuses follow its Member Agreement as fetched on September 24, 2026; the agreement itself is undated.
Each action shows the authority as it names itself, what it did, the platform it concerns and the date: the date of the action where it was published, otherwise the date it was first reported. Every entry is marked Official, Platform document or Secondary report. Where only secondary reporting exists, we say ‘reported by’ and name the outlet; where official sources conflict, we report both.
‘No public action found’ means our searches found none, not that none exists. Nothing on this page says whether trading is legal for you: for that, check the platforms' current terms and the law in Thailand.
Polymarket's Help Center page on geographic restrictions, updated August 14, 2026, names Thailand twice: among the 39 countries it lists as blocked, and in its close-only group with Singapore, Poland and Taiwan, where ‘users may close their existing positions but cannot open new ones’. Its undated developer geoblock documentation puts Thailand in the tier that is close-only on both the website and the API. Because the close-only wording is the more specific rule and both documents agree on it, Thailand is Close-only for Polymarket under this site's labels. Polymarket has not published the date on which it applied that rule to Thailand, and we found no Polymarket blog post or notice naming Thailand.
In practice the restriction is Polymarket's own geoblock. We found no Thai ISP or DNS block of polymarket.com, no court or Ministry of Digital Economy and Society order, and no app-store removal. Polymarket still serves a Thai-language interface (polymarket.com/th, seen in search results on September 26, 2026). When Prachachat wrote on February 9, 2026 that Thai users ‘are blocked from access’ alongside 33 other countries, that matched Polymarket's own list, not a Thai order; likewise, when Indonesia's Komdigi listed Thailand on May 22, 2026 among countries that have applied access restrictions to Polymarket, that was a foreign government's characterisation, not evidence of a Thai order. ‘Blocked in Thailand’ headlines generally trace back to the January 2025 police proposal.
Thailand is on the list of 55 Restricted Jurisdictions in Section VI of Kalshi's Member Agreement (undated; fetched September 24, 2026), and it has been there since Kalshi's first international list in its Exchange Notice of October 23, 2025, repeated in the notice of November 4, 2025. Under this site's labels Thailand is Restricted for Kalshi: Kalshi's own agreement excludes people in Thailand, and it gives no country-specific reason. Kalshi's help center (updated March 20, 2026) says trading from outside the United States is subject to that agreement. We found no Kalshi blog post or notice naming Thailand, and no Thai regulator, court or police action naming Kalshi. Kalshi's rule for Thailand is therefore stricter than Polymarket's: Polymarket allows closing positions, Kalshi excludes the country outright.
Thailand has no regulator dedicated to prediction markets. The body that acted is the Cyber Crime Investigation Bureau (กองบัญชาการตำรวจสืบสวนสอบสวนอาชญากรรมทางเทคโนโลยี, บช.สอท., CCIB) of the Royal Thai Police, whose Commissioner, Pol. Lt. Gen. Trairong Phiwpan, together with Pol. Maj. Gen. Chusak Kanit and Pol. Col. Ratchatchoke Leewanitchkul, announced the Polymarket proposal. Website blocks are executed by the Ministry of Digital Economy and Society (MDES), normally on a court order under the Computer Crime Act B.E. 2550 (2007); its role in any Polymarket order is not documented. The Securities and Exchange Commission (ก.ล.ต.) regulates digital-asset businesses under the Emergency Decree on Digital Asset Businesses B.E. 2561 (2018) and had MDES block five unlicensed foreign crypto exchanges from June 28, 2025 (reported by CoinDesk, May 30, 2025), but we found no SEC statement on Polymarket or Kalshi. The general law is the Gambling Act B.E. 2478 (1935): players face a fine of THB 1,000–5,000 and/or up to one year's imprisonment under section 4, and operators three months to five years and THB 5,000–100,000 under section 4 bis, as summarised by the law firm Anglo-Siam Legal (page updated April 30, 2026; secondary). The police statement itself cited no statute.
January 14, 2025 (secondary reports): the CCIB announced that it was preparing to propose closing (เตรียมเสนอปิด) polymarket.com as an illegal online-gambling site that uses crypto-assets, ‘to protect citizens from online-gambling risks and stop crypto use in illegal activity’, and asked the public to avoid unlicensed websites, to be careful with improper use of crypto-assets and to report tips through the AOC 1441 hotline or thaipoliceonline.go.th. MGR Online and Siam Blockchain reported it on January 14, 2025, The Block on January 15, 2025 and the Bangkok Post in January 2025; every report describes a proposal, and none cites a court order, an MDES order or an effective date. That announcement is shown as Public warning or intervention in the timeline below. Our searches in Thai and English through September 26, 2026 found no blocking order that followed, no CCIB follow-up statement and no report of Thai ISPs blocking the site; that means we found none, not that none exists.
The proposal was aimed at the platform, not at users, and it has not been followed by any public order, fine, court ruling or court challenge, and there is nothing to lift. Thai press continues to describe Polymarket as ‘an online-gambling site that appears to fall foul of Thai law’ (Prachachat, February 9, 2026), which is the press's characterisation, not a ruling. The wider backdrop: in October 2024 the cabinet tasked MDES with a review of online-gambling law (Tilleke & Gibbins, October 8, 2024), and in 2025 the SEC extended its enforcement to foreign crypto platforms serving Thai users. We found no Thai action against Kalshi.
The entries below are rendered from the same dated data as the main country table, newest first. Each row shows the date, the authority as it names itself, the type of action, the platform it concerns and the source with its type.
Public regulator, court and police actions concerning Polymarket and Kalshi in Thailand, as of 2026-09-24. Not legal advice.
This section reports what the law and the authorities in Thailand have said about people who take part in these markets, and any enforcement against users that has been made public. It describes; it doesn't advise.
We found no statement by a Thai authority about penalties for Polymarket or Kalshi users specifically. The CCIB's January 14, 2025 statement urged the public to avoid unlicensed websites but gave no penalty figures, and we found no prosecution of a Polymarket or Kalshi user in Thailand. Under the Gambling Act B.E. 2478 (1935), gambling by a player is itself an offence: section 4 provides a fine of THB 1,000–5,000 and/or up to one year's imprisonment, according to the law-firm summary cited above; the police did not say which provision they consider applicable. We found no Thai bank or licensed-exchange policy naming either platform, no Revenue Department statement on prediction-market winnings, and no statement from the Election Commission about Polymarket's Thai election markets.
Polymarket ran markets on Thailand's general election of February 8, 2026, including ‘Thailand Legislative Election Winner’ and ‘Next Prime Minister of Thailand’. Prachachat reported on February 9, 2026 about US$5.46 million in volume, with the People's Party at 72% on February 6; Siam Blockchain reported on January 4, 2026 that in early January the markets showed Pheu Thai at 73% to win and Anutin at 60% for prime minister (the difference is ordinary price movement, not a conflict between sources). We found no statement about these markets from the Election Commission (กกต.) or the police, and no sponsorship or partner product involving either platform in Thailand.
PolyKal is a read-only research site, and it does not restrict access by country, including from Thailand. Its public pages, including prices on both platforms, order-book depth, after-fee cost comparisons, the fee calculator, and large-trade and whale data, need no account. You don't need a VPN to use them.
Viewing public market data is not trading. PolyKal doesn't place orders, hold funds or give access to trading on either platform, and a restriction on Polymarket or Kalshi in Thailand still applies to trading there. Polymarket's help center says that using a VPN to get around its restrictions violates its Terms of Use, and Kalshi's Member Agreement excludes people in its restricted jurisdictions; getting around a block can also break local law. PolyKal doesn't help anyone get around them.
Start with the compare page, the fee calculator or large trades, or read how Polymarket works and how Kalshi works.
Thailand is one of 27 countries, plus the United States, that PolyKal tracks. The full availability table shows every country's status under each platform's rules and its regulator actions side by side, with the same dates and sources as this page, and its change log lists every edit we make.
Every entry is re-checked at least once a quarter, and sooner when a platform or regulator announces a change. The next scheduled full re-check is shown in the sidebar.
We found no Thai court or regulator ruling on it, and we don't decide it for you. What the record shows: the Cyber Crime Investigation Bureau said on January 14, 2025 that it would propose closing polymarket.com as illegal online gambling, without citing a statute; the Gambling Act B.E. 2478 (1935) makes gambling an offence for players as well as operators; and no order, ruling or prosecution has followed that we could find. Polymarket's own rules list Thailand as close-only and Kalshi's exclude Thailand. Check the current law and the platforms' current terms before doing anything.
Not by the Thai state, as far as we could find. Thai cyber police announced on January 14, 2025 that they would propose closing polymarket.com, but we found no court or MDES blocking order, no ISP block and no app-store removal through September 26, 2026. The restriction Thai users meet is Polymarket's own: its Help Center (updated August 14, 2026) lists Thailand as close-only, so existing positions can be closed but new ones can't be opened. Headlines saying Thailand ‘blocked’ Polymarket trace back to the police proposal or to Polymarket's own list.
Kalshi's own Member Agreement (Section VI, fetched September 24, 2026) lists Thailand as a restricted jurisdiction and has done so since its first international list of October 23, 2025, so Kalshi's contract excludes people in Thailand; Kalshi gives no reason. We found no Thai authority that has acted against Kalshi by name, but the Gambling Act described on this page doesn't distinguish between platforms.
Polymarket's Help Center (updated August 14, 2026) says that in Thailand ‘users may close their existing positions but cannot open new ones’, and its developer docs apply the same rule to both the website and the API. In other words, someone who already holds positions can close them, but no new position can be opened from Thailand under Polymarket's rules; the platform's help center also says that using a VPN to get around its restrictions violates its Terms of Use. See close-only, explained for the general definition.
Yes, on PolyKal. Its pages load from Thailand without an account and show prices, order-book depth and after-fee comparisons for both platforms, including Polymarket's Thai politics markets. Viewing data is not trading: PolyKal doesn't place orders or hold funds, and Polymarket's close-only rule, Kalshi's restriction and the legal positions described on this page still apply to trading.
No. Polymarket's help center says that using a VPN to get around its restrictions violates its Terms of Use, and Kalshi's Member Agreement excludes people in its restricted jurisdictions. Getting around a block can also break local law. You don't need a VPN to research these markets: PolyKal's prices, order books and fee calculator don't require one.
We re-check every country page at least once a quarter, and sooner when a platform or regulator announces a change; each rule and action on the page shows its own date and source. If you spot something out of date for Thailand, email [email protected] with a link to the new rule or order.
Every statement on this page rests on the sources below. Platform rules were checked against Polymarket's and Kalshi's own pages on September 24, 2026; regulator, court and police actions were checked against the sources listed on September 24–26, 2026. Each source is marked as official, a platform document or a secondary report. Where only secondary reporting was available, we cite it and say so; where official sources conflict, we report both. We re-verify this page quarterly.
MGR Online: cyber police prepare to propose closing Polymarket (ตำรวจไซเบอร์เตรียมเสนอปิด Polymarket), January 14, 2025. Secondary (Thai). Siam Blockchain: cyber police close to shutting down the Polymarket website, January 14, 2025. Secondary (Thai). The Block: Thailand proposes banning Polymarket amid online-gambling crackdown, January 15, 2025. Secondary. Bangkok Post: Singapore, Thailand move to block Polymarket, January 2025. Secondary.
Anglo-Siam Legal: gambling penalties in Thailand (Gambling Act B.E. 2478), updated April 30, 2026. Secondary (law-firm summary; not about either platform). Tilleke & Gibbins: Thailand amends online-gambling laws (cabinet review, October 2024), October 8, 2024. Secondary. CoinDesk: Thailand to block unlicensed foreign crypto exchanges from June 28, 2025, May 30, 2025. Secondary; not about prediction markets.
Prachachat: Polymarket and the Thai election markets (Thai users blocked alongside 33 other countries), February 9, 2026. Secondary (Thai). Siam Blockchain: Thai election odds on Polymarket, January 4, 2026. Secondary (Thai). Kalshi Exchange Notice: Updated Member Agreement (first restricted-jurisdiction list including Thailand), October 23, 2025. Platform document. ANTARA: Komdigi lists Thailand among countries restricting Polymarket, May 22, 2026. Secondary; a foreign government's characterisation.
Platform documents (all countries): Polymarket Help Center: Geographic restrictions (updated August 14, 2026), Polymarket developer docs: Geoblock (undated), Kalshi Member Agreement (undated; fetched September 24, 2026) and Kalshi Help Center: trading from outside the US (updated March 20, 2026).
PolyKal is an independent research tool. We are not affiliated with, endorsed by, or operated by Polymarket or Kalshi. We report each platform's published rules and public regulator, court and police actions in Thailand; we don't say whether trading is legal for you, and we don't help anyone get around a platform's restrictions. Last reviewed September 26, 2026. Not legal or financial advice.
Know of a newer rule, order or court decision for Thailand? Email [email protected] with a link to it.