BTC TX fee

[Simon8x]

They are used for Mining rewards for Miners

Right now the average tx fee in a block is just ~0.1 bitcoin, which is just 0.4% of the 25 bitcoin block reward. But as block reward halves again and again, tx fee will take a more and more important role as mining reward.

[sgk]

when we tx some btc to other addy we got some fee of 0.0001 (AVG) so my question is where are all the fee`s from world of btc gather? or just waxted?

Currently, Bitcoin block reward is 25BTC. That means when a pool finds a block, it receives 25BTC. All transaction fees included in the block is added to this reward.

For example, if a block contains 100 transactions and teh total fees of those 100 transactions is 1 BTC, then the block reward becomes 26 BTC.
These 26 BTC are distributes among the miners who mined at that pool.

So in a nutshell, the transaction fees go to the miners who mined the block to make your transaction possible.