Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Legal UK) Pick polygram.ink (preferred broker) |
83% | 17% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
83% | 17% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Game 1 Winner | 83% |
| Match Winner | 80% |
| Game 2 Winner | 69% |
| Total Kills Over/Under 50.5 in Game 2? | 63% |
| Total Kills Over/Under 50.5 in Game 1? | 63% |
| O/U 2.5 Games | 56% |
| Ends in Daytime | 50% |
| Both Teams Beat Roshan | 50% |
| Both Teams Destroy Barracks | 50% |
| Any Player Ultra Kill | 50% |
| Any Player Rampage | 50% |
| Ends in Daytime | 50% |
| Both Teams Beat Roshan | 50% |
| Both Teams Destroy Barracks | 50% |
| Any Player Ultra Kill | 50% |
| Any Player Rampage | 50% |
| Ends in Daytime | 50% |
| Both Teams Beat Roshan | 50% |
| Both Teams Destroy Barracks | 50% |
| Any Player Ultra Kill | 50% |
| Any Player Rampage | 50% |
| First Blood in Game 2? | 50% |
| First Blood in Game 1? | 50% |
| Total Kills Over/Under 45.5 in Game 1? | 50% |
| Total Kills Over/Under 40.5 in Game 1? | 50% |
| Total Kills Over/Under 35.5 in Game 1? | 50% |
| Total Kills Over/Under 55.5 in Game 1? | 38% |
| Game Handicap: BoomBoys (-1.5) vs OG (+1.5) | 30% |
Market context
The International 2024 Group Stage will feature a best-of-three match between BoomBoys and OG on 12 August at 10:00 PM ET. OG, the two-time International champions (2018, 2019), enter as the stronger historical favourite, though BoomBoys represent a rising Southeast Asian roster with recent LAN performances. The 70% crowd-implied probability favours OG, reflecting their pedigree and consistent top-eight finishes at majors over the past two years.
Historical precedent suggests caution with such probabilities in Dota 2 group stages. OG's dominance has eroded since their championship runs; they finished outside top four at three consecutive Internationals (2021–2023). BoomBoys, conversely, qualified directly to the group stage and have demonstrated meta-adaptation in regional qualifiers. Comparable upsets—such as PSG.LGD's struggles in 2022 or Tundra's unexpected 2023 run—illustrate that seeding and historical ranking diverge sharply from current form in Dota's volatile patch cycles.
Traders should monitor patch notes released before 12 August, as Valve typically implements balance changes within two weeks of the event. Team roster confirmations and scrim results, often discussed on esports platforms like Liquipedia and team social channels, provide real-time form indicators. The settlement window closes 13 August at 08:00 UTC; any technical delays beyond seven days trigger a 50-50 resolution. Under German GlüStV regulations, this market remains accessible in most EU jurisdictions; US CFTC reach applies to derivative positions only, not prediction contracts. No-KYC access up to $1,500 USD per account means retail traders can participate without identity verification on compliant platforms, though aggregate exposure across multiple accounts may trigger reporting thresholds.
Methodology
This overview of Dota 2: BoomBoys vs OG (BO3) - The International Group Stage reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
UK Frequently Asked Questions
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Legal UK has a different geo footprint.
- Is Polymarket regulated by the UKGC?
- No. Polymarket is not licensed by the UK Gambling Commission (UKGC). It is a decentralised prediction market operated under US regulation. UK traders can use it but do not benefit from UKGC dispute resolution or player protection requirements.
- What are the HMRC tax rules on Polymarket profits for UK traders?
- Polymarket profits are treated as cryptocurrency disposal events by HMRC. Each USDC settlement is a taxable event subject to Capital Gains Tax (CGT). For 2026/27, the CGT rate is 18% (basic rate) or 24% (higher rate). The annual CGT exemption is £3,000. Report via HMRC Self Assessment if your total crypto gains exceed £3,000 or proceeds exceed £50,000.
- Does Polymarket KYC apply to UK users?
- Yes. Polymarket requires KYC (Know Your Customer) verification for all users, including UK residents. You must provide a government-issued photo ID and a selfie. The process typically takes 5–10 minutes via their ID verification provider.
- What is the legal difference between Polymarket and Betfair Exchange for UK traders?
- Betfair Exchange is UKGC-licensed, meaning UK consumer protections apply and winnings are typically tax-free. Polymarket is not UKGC-licensed — it operates under decentralised blockchain rules. Profits from Polymarket are subject to HMRC CGT as crypto disposals. Choose based on your regulatory preference and tax situation.
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