The fee is 0.1%, with a 1000 sat minimum. I paid 1000 sat, ACINQ paid almost double that amount to open the channel.
There's
an update from Phoenix Wallet:
In the short term we are raising fees to 1% for channel creation. It better reflects current network conditions.
Longer term, we plan to make those fees dynamic to take advantage of low fees periods. In the meantime, we will be more conservative and focus on sustainability.
Mind
the minimum fee:
1% of the amount received, with a 3000 sat minimum fee. This covers the cost of opening a channel. The amount received must be at least 10 000 sat.
This makes sense, it's obvious they were paying more for opening channels than they earned from it.
Depositing 0.01
BTC into Phoenix Wallet will now get you 0.0099
BTC in a LN channel. That's about $5.60 fee on a $560 channel. If you make many payments, it's still a lot cheaper than on-chain transactions.