Typus generates fees from the following primary sources:

The trading fee for opening or closing a position consists of a Base Fee and an Impact Fee. Fees may vary depending on the market and collateral type.

Trading Fee = Position Size * (Base Fee % + Impact Fee %)

Coin Collateral

Option Collateral

A fixed % of the position size is charged as a base fee when opening, closing, or partially closing a position.

On Typus Perps, large orders don’t move token prices because pricing is oracle-based. Instead, we apply an impact fee to reflect the true cost of trading - based on order size, collateral liquidity, and market volatility.

This fee structure ensures fairness for both traders and liquidity providers:

Impact fee parameters may be adjusted over time to reflect evolving market conditions, ensuring sustainable liquidity and a balanced trading environment.

Let’s walk through how the Trading Fee is calculated under this market conditions for SUI/USD:

Step-by-step fee calculation

Case 1：A trader opens a 2,500 SUI long position using USDC as collateral.

Case 2：A trader opens a 1,000 SUI long position using USDC as collateral.

Case 3：A trader opens a 1,000 SUI short position using USDC as collateral.

In the scenario above, the impact fee mechanism incentivizes traders to open short positions, which help restore balance to open interest. Conversely, long positions incur a higher impact fee as they further increase the existing imbalance.

Funding fees can be positive or negative while a position is open. The funding rate fluctuates over time based on the long-to-short balance. It is applied when an order is executed, or collateral is modified.

Funding Index = Basic Funding Rate * ( Net Position in USD / Total Tokens in the TLP )

Funding Fee = Difference between your entry index and the current funding index * Position Size

The Basic Funding Rate is at 0.068% for all perpetual markets.

When long open interest exceeds short open interest, the funding rate paid by longs to shorts will gradually increase until the gap between long and short positions falls below a set threshold.

Conversely, if short open interest surpasses long open interest, the funding rate will adjust in the opposite direction, with shorts paying longs at a gradually increasing rate until the imbalance is reduced below the threshold.

The Borrow Fee accrues hourly on open positions and is deducted when an order is executed, or collateral is modified. This fee is paid to the counterparty of your trade, with the hourly rate fluctuating based on utilization and the amount borrowed.

Hourly Borrow Fee = Hourly Borrow Rate * Position Size

Net Rate = Funding Rate + Borrow Rate

Upon liquidation, any remaining collateral after deducting losses and fees is distributed as follows:

The swap fee is 0.1% to 0.2% of the swap amount. The exact fee depends on whether the trade improves or reduces the target balance of the Typus Liquidity Pool.

The mint or burn fee is 0.1% to 0.2% of the collateral amount. The exact fee depends on whether the trade improves or reduces the target balance of the Typus Liquidity Pool.

The claim fee 0.1% has been waived at Typys V2.

The fee is charged by Typus to the Option Seller (who is also the Vault Depositor), because the option seller is the net premium (reward) receiver.

The trading fee is charged by Typus to the Option Buyer (who is also the Vault Bidder). 

Trading fee is 10-15% of the options price. For example, if a SUI option is traded at the price of 0.0001 SUI, the trading fee will be 10% of 0.0001 SUI = 0.00001 SUI. 

*Fees take effect on Jan 20, 2025.

The fee for staking & switching Tails By Typus is 0.05 SUI per time.

The fee for feeding Tails By Typus is 0.5 SUI, regardless of the number of Tails staked. Feed once per day.

The fee for transfering Tails By Typus to another wallet address is 0.01 SUI per Tail.

The fee for extracting EXP from Tails By Typus is 100 SUI per time.