If you see an Insufficient funds error message when you try to send a transaction from your Liquid wallet, it can mean one of two things: You are trying to send more funds than you have in your account. You don't have enough L-BTC in your account to cover the transaction fee. If the error occurs, double-check the payment amount you entered to make sure it doesn't exceed the available funds in your account. If you have enough funds in your account but still receive the error, you most likely don't have enough L-BTC to pay for the transaction. All Liquid Transactions Require L-BTC Transaction fees on Liquid are always paid in L-BTC, regardless of the asset transacted. That means whether you send L-BTC, USDt, or another Liquid asset, your transaction fee is always paid in L-BTC. To send transactions on Liquid, make sure to always have some L-BTC in your wallet to cover the fees. There are many easy ways to get hold of small amounts of L-BTC. The lowest possible transaction fee on Liquid is 0.1 satoshi/vbyte (one-tenth of the minimum fee on Bitcoin), which at the time of writing is typically sufficient to get a transaction into the next block. The fee for a typical Liquid transaction ranges anywhere between 0.00000150 and 0.00000300 L-BTC on average.