How to Find Out Unstake Fee

Query unstake fee information directly from Lombard’s smart contracts.

LBTC Contract

Address: 0x8236a87084f8b84306f72007f36f2618a5634494

Fee calculation varies by destination:

Destination	Formula
BTC	Redeem fee + to native commission
BTC.b	Redeem fee only

Function	Selector	Description
`getRedeemFee()`	`0xc6d98f1a`	Amount of LBTC taken as redeem fee
`toNativeCommission()`	`0xb743ab4f`	Amount of LBTC taken as “to native commission”
`getRedeemForBtcMinAmount()`	`0x1beda7e3`	Minimum redeemable amount (after fees)

Address: 0xB0F70C0bD6FD87dbEb7C10dC692a2a6106817072

Fee calculation: Redeem fee + to native commission

Function	Selector	Description
`getRedeemFee()`	`0xc6d98f1a`	Amount taken as redeem fee
`toNativeCommission()`	`0xb743ab4f`	Amount taken as native commission
`getRedeemForBtcMinAmount()`	`0x1beda7e3`	Minimum redeemable amount

Address: 0x9ece5fb1ab62d9075c4ec814b321e24d8ea021ac

Alternative data source for fee information:

Function	Selector	Description
`toNativeCommission()`	`0x5698732f`	Native commission calculation
`tokenConfig()`	`0xfe136c4e`	Basic config for selected token (redeem fee, min redeemForBTC amount, redeem enabled flag)