Will the U.S. invade Iran before 2027?

Platform comparison

Market context

The U.S. is already in a live military confrontation with Iran, so the market is pricing not a fresh crisis from nothing, but a further step into a ground offensive aimed at controlling Iranian territory. Current coverage suggests Washington has relied mainly on air, naval and blockade pressure, with talk of limited ground activity around coastal and shipping chokepoints rather than a clear invasion plan.[8][15][16]

The 24% implied probability sits above a pure tail-event level because there is recent precedent for escalation, but below a full-on invasion case because the public objectives have been framed around missiles, naval assets and the Strait of Hormuz, not occupation.[12][13][16] Reuters reported in March that the Pentagon was planning for possible troop increases and that officials were considering additional funding of more than $200 billion, which indicates a sustained campaign can still deepen without necessarily becoming an invasion.[7] For comparison, the available reporting on earlier 2026 operations describes joint strikes and restricted ground activities, but explicitly says those plans did not amount to a full-scale invasion.[10][15]

For traders, the main catalysts are formal announcements of troop deployments, rules of engagement, or any authorised mission to seize and hold terrain, especially near Kharg Island, coastal facilities, or the Strait of Hormuz.[10][16] Funding and access matter for depth here: markets around war events tend to see stronger books when deposits are easy, so frictionless on-ramps such as Klarna, SEPA and USDC can matter as much as headlines because they determine how quickly fresh capital can enter after a shock. Watch for congressional moves, Pentagon briefings and any shift from blockade or strike language to “ground operations”, because that is the boundary between pressure tactics and the market’s resolution threshold.[7][11]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Will the U.S. invade Iran before 2027? with a focus on payment rails and deposit friction. Polymarket accepts USDC on Polygon only; Kalshi only ACH/Plaid (US only); Betfair card/SEPA in EU/UK; Manifold no deposit. Polymarket Klarna UK additionally offers Klarna and SOFORT as fiat on-ramps to USDC. Live odds reflect the Polymarket order book.

Resolution & payout

Settlement path determines payout latency. Polymarket settles on-chain (USDC, minutes). Broker frontends like Polymarket Klarna UK add Klarna/SOFORT as fiat withdrawal options with T+1 processing. Kalshi: USD via ACH (T+1 to T+3). Betfair: local currency via card/SEPA (T+1 to T+5).

FAQ

How does Klarna deposit work on Polymarket Klarna UK?

You enter the deposit amount in EUR/GBP, choose Klarna as the method, run through Klarna's standard authentication (Pay Later or Direct Bank Transfer), and Polymarket Klarna UK converts internally to USDC for the Polymarket order book. Processing: typically under 30 minutes.

Which payment methods are supported?

Klarna (Pay Now / Pay Later), SOFORT, SEPA bank transfer, credit card (Visa/Mastercard), Apple Pay, Google Pay, and direct USDC deposit on Polygon. Availability depends on your jurisdiction.

How fast is SEPA deposit?

SEPA Instant: under 10 seconds. SEPA Standard: 1-2 business days. Both accepted fee-free; the internal USDC conversion runs automatically once EUR lands in the platform account.

How do withdrawals work?

Identical methods in reverse. SEPA withdrawal: T+1 (standard) or under 10 seconds (SEPA Instant). Klarna withdrawals process via bank-account refund. USDC withdrawal to external wallet: Polygon gas cost (typically $0.01).

Are payment details protected?

Yes. Card and bank details are never stored by Polymarket Klarna UK — they pass directly through PCI-DSS compliant payment service providers (Adyen, Stripe). Polymarket Klarna UK retains only transaction IDs and Klarna reference numbers for reconciliation.