Fees & premiums
Two numbers decide what you pay: the maker's premium (their price for holding USDC where you want it) and the flat 3% service fee. Both are shown to the cent before you sign anything.
The formula
- Maker proceeds = amount you receive × (1 + premium). A 5% premium on 100 USDC means the maker is paid 105 USDC.
- Service fee = 3% of maker proceeds (the on-chain minimum; rounded up to the next unit), paid by the taker on top.
- You pay = maker proceeds + service fee.
Worked examples
| You receive | Premium | Maker proceeds | Fee (3%) | You pay |
|---|---|---|---|---|
| 100 USDC | 0% | 100.00 | 3.00 | 103.00 USDC |
| 100 USDC | 5% | 105.00 | 3.15 | 108.15 USDC |
| 1 USDC | 10,000% (the cap) | 101.00 | 3.03 | 104.03 USDC |
Premiums can be extreme — on purpose
The cap is 10,000% (a maker may ask 101× face value). When the destination chain is starved for USDC, that's the market speaking. The interface states the all-in rate in words on every fill, and anything at or above 2× face value requires you to type the multiplier before the button unlocks. At par, the premium is the price — read it.
Limits
- Minimum trade: maker proceeds must reach 1 USDC (dust guard, enforced on-chain).
- Maximum trade: whatever the offer has unreserved.
- Makers pay no fee — the taker pays the fee on top of proceeds.