Ledn does not charge a fee for withdrawing BTC to an external BTC address; however, there are fees for external miners which confirm the transactions on the BTC blockchain. In the case of USDC, there is a flat fee of 15 USDC for withdrawing to an external USDC wallet address.
Ledn strives to minimize these miner fees for our clients as much as possible, while also ensuring swift confirmation of any withdrawals.