where will TX fees go once difficulty reaches 0?

[temporalcausality]

So, i've been mining for a couple years now and just had a thought.   Currently tx fees go to miners as an extra sort of bonus for each block mined.   

When difficulty reaches 0, and the blockchain has all 21 million blocks, who will the tx fees go to?

[Kruncha]

It goes up, not down. The reward will always go to the miners, they'll still be needed to create secure transactions. By then transaction fees will be substantially higher, creating a never ending resource for miners.

K.

[avabit]

The transaction fees wouldn't necessarily be higher, but likely more valuable as bitcoins become more adopted. The difficulty changes based on the hash rate of the network and adjusts to ensure that a block is mined roughly every 10 minutes.

[Akka]

So, i've been mining for a couple years now and just had a thought.   Currently tx fees go to miners as an extra sort of bonus for each block mined.   

When difficulty reaches 0, and the blockchain has all 21 million blocks, who will the tx fees go to?

Sure you know how Bitcoin works?

Hint: 21 Million Blocks?

[Foxpup]

I'm going to assume you mean when the block reward reaches 0 and all 21 million coins have been mined, in which case transaction fees continue to go to the miners just as they always have. Good thing too, since that's what motivates miners to continue mining past that point. Note that the purpose of mining is to secure the network, not to produce new coins; new coins are just a (temporary) side benefit to bootstrap the whole process. Once all coins have been mined, miners will be paid purely in transaction fees, ie, Bitcoin will be supported on a pure "user pays" basis.