Iran charges Hormuz fees by 2026?

Platform comparison

Market context

Iran and Oman have formally proposed a joint administrative fee plan for commercial vessels navigating the Strait of Hormuz, a move that directly challenges existing international law prohibiting tolls on international waterways[1]. This proposal emerged following a memorandum of understanding with the United States that granted a 60-day toll-free transit period, after which Iran and Oman intend to define the waterway's administration[1]. While US officials, including Secretary of State Marco Rubio, have firmly opposed any monetisation of the strait, insisting on a return to pre-war conditions, Iranian representatives insist the payments will be mandatory rather than voluntary[2].

Historically, the Strait of Hormuz has operated without mandatory passage fees, unlike the Strait of Malacca where service charges for environmental risk and rescue are standard[1]. The current 2% crowd-implied probability reflects the significant legal and diplomatic hurdles, particularly the US stance that such fees violate international maritime law[1]. However, the transformative impact of the recent US-Israeli conflict on Iran has reshaped Middle Eastern dynamics, creating a precedent where Iran and its ally Oman could enforce a substantial departure from pre-war norms[2]. On platforms like Polymarket, this divergence is often priced as implied probability, whereas Kalshi or Betfair might express it as decimal odds, with fee structures and KYC requirements varying significantly between these books.

Traders must monitor the upcoming joint discussions between Iran and Oman scheduled to begin next week, which will determine the specifics of the fee collection and route modifications[2]. Key catalysts include whether the US negotiators raise formal concerns with Omani representatives regarding the proposal's mandatory nature, as current reports suggest a disconnect between Omani claims of voluntary fees and Iranian insistence on obligatory payments[2]. The market will resolve based on an official announcement of a generally applicable policy, so isolated demands will not trigger a "Yes" outcome[2]. Recent reporting from NBC News and the New York Times confirms the proposal is active, making the next diplomatic week critical for assessing the likelihood of implementation[1][2].

Sources: 1 · 2 · 3 · 4 · 5

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.