Fees
A position costs one payment, made when you open it, and nothing is charged on top.
Where the fee is
Your payment is the premium for the trade, and it goes to the pool that takes the other side. Isometric keeps up to 5% of the premium and the depositors backing your position keep the rest.
Two adjustments are inside the price rather than added to it:
- A 0.1% entry spread. The opening price is nudged 0.1% against you, as on any venue.
- A busy-pool adjustment. When much of a pool is locked against open positions, new ones are priced a little more conservatively, so your target sits further from today's price.
What you never pay
| On a perp | On Isometric |
| Funding every hour | Nothing |
| Opening fee | Nothing beyond the price |
| Closing fee | Nothing. There is no close |
| Liquidation penalty | Nothing. There is no liquidation |
| Withdrawal fee on a payout | Nothing |
Network fees
Every transaction on Base costs a small amount of ETH, typically a fraction of a cent. You pay it from your wallet for:
- approving USDC, the first time only;
- opening a position;
- claiming a payout, when a claim is needed.
Automatic payouts and settlement are paid for by the protocol's operating budget, not by you and not by depositors.
Conversion cost on a long
A winning long is converted from the market's asset to USDC at settlement. The conversion is only accepted if it fills within 0.5% of the expected value, so that is the most it can cost you. If it cannot, the payout stays in the market's asset for you to claim instead. See Payouts and claims.
Can the fee change
The fee and the entry spread are protocol parameters. Governance can adjust them within limits fixed in the contract code, and any change to a risk module takes effect only after a 48-hour delay. The values in force are readable on the chain at any time. Protocol parameters explains how a change happens.