You have a good point with this question, but is hard to implement and will never be an exact estimation.

To estimate fees before the tx is sent, the wallet need to do a heavy probing.

And probing over LN is really bad, is fucking the whole routes.

Maybe when something like "valve system" Rene Pickhardt 

 (and also I was proposing this even before 

) we could not have a good estimation and also without damaging too much LN path finding and routes.

But yes, I agree with your point, user need to have at least a close estimation about how much will be the fees. Nowadays we have too many predators that only want "profits" from running a LN node...

bitcoin

Predictable fees for Lightning

You have a good point with this question, but is hard to implement and will never be an exact estimation.
To estimate fees before the tx is sent, the wallet need to do a heavy probing.
And probing over LN is really bad, is fucking the whole routes.

Maybe when something like "valve system" Rene Pickhardt [proposed in his latest study](https://blog.bitmex.com/the-power-of-htlc_maximum_msat-as-a-control-valve-for-better-flow-control-improved-reliability-and-lower-expected-payment-failure-rates-on-the-lightning-network/) (and also I was proposing this even before [in this experiement](https://darthcoin.substack.com/p/lightning-routing-fees-experiment)) we could not have a good estimation and also without damaging too much LN path finding and routes.

But yes, I agree with your point, user need to have at least a close estimation about how much will be the fees. Nowadays we have too many predators that only want "profits" from running a LN node...