Glossary/Settlement

Settlement

When a prediction market resolves and pays out. YES pays $1 if event occurs, $0 if not.

Settlement is when a prediction market officially resolves — the event either happened or didn't — and contracts are paid out. This is the most common way prediction market positions close.

How settlement works

  • The event occurs → YES shares pay $1.00, NO shares pay $0.00
  • The event doesn't occur → NO shares pay $1.00, YES shares pay $0.00
  • Payment is automatic — you don't need to take any action

Settlement = taxable event

The moment a market settles, you have a taxable disposition. Your gain or loss is locked in:

Gain/Loss = Settlement Payout − Cost Basis

Settlement timing

Different platforms settle at different speeds:

  • Kalshi: Usually settles within minutes to hours of the event
  • Polymarket: Settlement can take hours to days depending on the resolution source
  • DraftKings: Typically settles same day

Settlement date matters for tax year

If you buy shares in December 2024 but the market settles in January 2025, the gain/loss goes on your 2025 return. The settlement date — not the purchase date — determines the tax year.

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