Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Alternative) Pick polygram.ink (preferred broker) |
57% | 43% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
57% | 43% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| December 31 | 57% |
| October 31 | 42% |
| September 30 | 24% |
| August 31 | 11% |
| July 15 | 0% |
| July 31 | 0% |
Market context
Iran’s practical question is whether Tehran has **officially moved from ad hoc payments to a generalised, announced fee regime** for commercial transits through Hormuz. Recent reporting says some ships have already been asked to pay, with charges reportedly reaching about $2 million per voyage, but the mechanism has been described as informal or not yet systematic, and Iran has repeatedly framed the levy as “service fees” rather than a toll.[1][2][7][13] That distinction matters for settlement: the market requires an official announcement and commencement of collection from a defined class of vessels, so scattered payments or one-off demands are not enough.[1][13]
For historical comparison, the strongest read-through is that the crowd is pricing a legal and operational ambiguity, not a clean absence of action. Reuters reported in April that Iran was seeking a fee provision in any lasting settlement, while later Reuters reporting said the authority governing the strait would waive charges during a 60-day negotiation period.[12][13] Bloomberg and the *Financial Times* have described some vessels paying on an ad hoc basis, while Iranian officials have alternated between denying “tolls” and saying charges for navigational or environmental services will be collected.[1][7][8] On Polymarket, that ambiguity is reflected in probability; on Kalshi or Smarkets, traders would see the same event through decimal odds and exchange-style depth, while Betfair’s commission and KYC access can make the effective price and available liquidity differ materially.
The main catalysts are official notices from Iran’s Persian Gulf Strait Authority, any published tariff or permit schedule, and whether the current waiver or negotiation period is extended, lifted, or replaced by a standing fee. Reuters said transit requests had to be filed at least 48 hours ahead during the temporary arrangement, and later reports said no official tariff had been published even as fees were being collected in some form.[8][12] Traders should also watch shipping and maritime bodies, since the IMO has already been reported as opposing the fees, and any fresh Iranian statement about “service charges” versus “tolls” could matter for whether the market counts the policy as qualifying.[3][7]
Methodology
This page compares Iran charges Hormuz fees by 2026? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Alternative, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.
FAQ
- Polymarket vs Kalshi — which is better?
- Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.
- Which platform has the deepest liquidity?
- Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.
- Is Betfair a Polymarket alternative?
- Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.
- Which platform is accessible globally?
- Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Polymarket Alternative has a different geo footprint and routes to Polymarket's order book at 0% fees.
- Which platform supports Klarna/SOFORT?
- Directly: none. Polymarket accepts only USDC on Polygon. Polymarket Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.
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