so how much should I pay for a fast transaction of 5 bitcoins? or even 2 bitcoins at a time because ill be splitting up all of them out of 28 bitcoins. What will my transaction fee be??The fee is per kB. 0.1 mBTC per kB should be fine for inclusion in the next block. Most tx that are waiting are <0.1mBTC, free, or have unconfirmed outputs. The amount of the tx is irrelivent. 2 BTC or 200,000 BTC what matters is the physical size of the transaction. Most tx are <= 1 kB.