The rate at which new bitcoins are mined follows a predefined schedule, with a new block appearing roughly every 10 minutes. The amount of bitcoins in a newly mined block started as 50 and gets halved every 210,000 blocks. Bitcoin miners will likely continue charging mining fees when it reaches its limit. Mining is the process of verifying transactions and opening new blocks, which will still need to be done. So, because mining fees will be the only reward, they may increase to compensate miners https://tontoken.co/