Fees and Supported Chains

deBridge charges a small fee when an order is created through DlnSource smart contracts. The fee is what users pay for confidence and decentralization. It consists of two parts:

• A flat fee is paid in the native gas token of the chain where the order is created

• A variable fee of 4bps is paid in the input token

Chain (Chain id)	Chain Id	Internal Chain Id	Flat Fee
Arbitrum	42161	42161	0.001 ETH
Avalanche	43114	43114	0.05 AVAX
BNB Chain	56	56	0.005 BNB
Ethereum	1	1	0.001 ETH
Polygon	137	137	0.5 MATIC
Solana	7565164	7565164	0.015 SOL
Linea	59144	59144	0.001 ETH
Base	8453	8453	0.001 ETH
Optimism	10	10	0.001 ETH
Neon	245022934	100000001	0.75 NEON
Gnosis	100	100000002	1 xDAI
Lightlink (suspended)	1890	100000003	0.0005 ETH
Metis	1088	100000004	0.02 METIS
Bitrock	7171	100000005	20 BROCK

The fee is fully refunded in case the limit order is canceled.

Protocol fees can be changed. Hence, for any on-chain interactions with deBridge, fees must not be hardcoded but queried dynamically from the state of the DLN smart contract. Please refer to Estimating the order to learn how to query the actual flat fee from the smart contract.