# Platform Fee

## Fee Calculation Rules

* No listing or delisting fees for unmatched transactions.
* A fee is charged to the seller immediately after the Order is **filled**. The buyer will incur the fee after the settlement phase. The collected fees are transferred to the Unich Treasury.
* A **2% fee** on the total volume of the pool when both parties participate in the settlement. (Including both project tokens and collateral)
* A **0.5% fee** on the volume for the party executing the Cashout.
* A **4% fee** on the volume for the party that has settled when the other party does not settle.
* A refund **fee of 2.5%** on the total volume of the pool for orders that were matched but both parties withdrew from the pool during the settlement phase.

## Calculation Formulas

* For filled orders where both parties settle:

                                               ***Fee = 2% × Transaction Volume***
* For filled orders where only one party settles (calculated based on the collateral):

                                               ***Fee = 4% × Transaction Volume*** (Buyer + Seller)
* For transactions where both the buyer and seller fail to settle (calculated based on collateral assets):\
                                               ***Fee = 2.5% × Transaction Volume***
* For Cashout orders (calculated based on the collateral):

                                               ***Fee = 2.5% × Transaction Volume***