Loading
Exactly what you pay, where it goes, and how a position pays out — with worked examples. Every number here is enforced on-chain.
The trading fee
Predictifi charges a single trading fee, taken from the trade amount on each buy and sell. There are no opening, holding, or hidden fees — the whole cut splits two ways.
Total per trade
2%
Applied to the trade amount on both sides of the book — nothing on top.
The 0.5%creator fee goes to the market's creator; the 1.5% liquidity fee goes to liquidity providers and the protocol recipient.
Full schedule
Worked example
A market asks “Will it rain on launch day?” Yes is trading at 40¢, and you spend $100 on Yes. Each winning share redeems for $1.00; losing shares redeem for $0.
At ~40¢, $98 buys roughly 245 Yes shares. The exact count comes from the LMSR cost curve and is shown before you confirm.
Your $100 outlay already includes the $2 fee — nothing extra on top. If Yes resolves false, the shares redeem for $0. If the market is voided, you are refunded in full with no fee.
Why the price moves as you buy
Prices are set by an on-chain Logarithmic Market Scoring Rule (LMSR), with cost function C(q) = b · ln( Σ exp(qᵢ / b) ). Buying a side pushes its price up and the opposite side down; the depth b controls how far. Larger orders move the price more.
Leverage
On eligible markets you can open a leveraged long by posting margin — your share of the cost. The Leverage Vault lends the rest. Margin is bounded to $50–$2,000, and higher multipliers unlock as your traded volume grows.
You post the margin plus the 2% trading fee; the vault funds the remaining $200.
At the liquidation price the loss equals your posted margin. Two safeguards apply: a 1-hour cooldown before any liquidation, and a lifetime TWAP gate so a single-block spike can never trigger one. A liquidator earns 5% of the margin, funded from seized surplus first, then the Insurance Reserve.
Leverage magnifies losses
Resolution
Markets resolve optimistically. Anyone can propose the winning outcome by posting a 100 USDC bond, opening a 48-hour dispute window. Bonds make dishonesty expensive.
No dispute
If the window passes unchallenged, the proposal finalizes, the proposer's 100 USDC bond is refunded, and winning positions can redeem.
Disputed
A challenger posts a matching bond, escalating to the resolver owner to settle. The honest party takes both bonds — a frivolous proposal or dispute simply loses money.
Void
A market that can't be resolved unambiguously is voided and refunds in full, with no fee deducted.
The bond amount and the dispute window are owner-configurable protocol parameters.
Exactly what you pay, where it goes, and how a position pays out — with worked examples. Every number here is enforced on-chain.
The trading fee
Predictifi charges a single trading fee, taken from the trade amount on each buy and sell. There are no opening, holding, or hidden fees — the whole cut splits two ways.
Total per trade
2%
Applied to the trade amount on both sides of the book — nothing on top.
The 0.5%creator fee goes to the market's creator; the 1.5% liquidity fee goes to liquidity providers and the protocol recipient.
Full schedule
Worked example
A market asks “Will it rain on launch day?” Yes is trading at 40¢, and you spend $100 on Yes. Each winning share redeems for $1.00; losing shares redeem for $0.
At ~40¢, $98 buys roughly 245 Yes shares. The exact count comes from the LMSR cost curve and is shown before you confirm.
Your $100 outlay already includes the $2 fee — nothing extra on top. If Yes resolves false, the shares redeem for $0. If the market is voided, you are refunded in full with no fee.
Why the price moves as you buy
Prices are set by an on-chain Logarithmic Market Scoring Rule (LMSR), with cost function C(q) = b · ln( Σ exp(qᵢ / b) ). Buying a side pushes its price up and the opposite side down; the depth b controls how far. Larger orders move the price more.
Leverage
On eligible markets you can open a leveraged long by posting margin — your share of the cost. The Leverage Vault lends the rest. Margin is bounded to $50–$2,000, and higher multipliers unlock as your traded volume grows.
You post the margin plus the 2% trading fee; the vault funds the remaining $200.
At the liquidation price the loss equals your posted margin. Two safeguards apply: a 1-hour cooldown before any liquidation, and a lifetime TWAP gate so a single-block spike can never trigger one. A liquidator earns 5% of the margin, funded from seized surplus first, then the Insurance Reserve.
Leverage magnifies losses
Resolution
Markets resolve optimistically. Anyone can propose the winning outcome by posting a 100 USDC bond, opening a 48-hour dispute window. Bonds make dishonesty expensive.
No dispute
If the window passes unchallenged, the proposal finalizes, the proposer's 100 USDC bond is refunded, and winning positions can redeem.
Disputed
A challenger posts a matching bond, escalating to the resolver owner to settle. The honest party takes both bonds — a frivolous proposal or dispute simply loses money.
Void
A market that can't be resolved unambiguously is voided and refunds in full, with no fee deducted.
The bond amount and the dispute window are owner-configurable protocol parameters.