All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu 'alyhi wa sallam, is His slave and Messenger.
Scholars have held different opinions regarding the difference between Fate and Divine Decree as follows:
The first group is of the opinion that there is no difference in meaning between them, as each of them points to the meaning of the other and whenever one of them is used, it includes the other.
This is the preponderant opinion for many reasons including the following:
The second group of scholars differentiated between Fate and Divine Decree and have had great differences regarding the identification of the difference. The most acceptable difference that they mentioned is that Divine Decree refers to what has already happened, while Fate refers to what has not yet happened.
Allaah Knows best.