The 21-year-old died after being stabbed on Myrtle Avenue in Ovenden on Saturday morning.
The Courier understands he was well known in North Halifax.
The fundraiser, organised by Alisha Wilkinson, says: "We all know what tragedy happened. We lost a beautiful loving boy.
"It was such a shock to everyone. We all just need to put together to help Casey's family out."
The fundraiser has collected £365 so far.
To donate, visit https://uk.gofundme.com/f/help-for-casey-badhams-family