A bulk bin has a perimeter wall and first and second floor panels hingedly joined to the perimeter wall. Each floor panel is selectively foldable from a stowed position to a deployed position. In some embodiments, the first floor panel has a first tab and a first hole and the second floor panel has a second tab and a second hole. The first tab is configured for being selectively received in the second hole for interlocking engagement with the second floor panel, and the second tab is configured for being selectively received in the first hole for interlocking engagement with the first floor panel to secure the first and second floor panels in the deployed position. In certain embodiments, the perimeter wall includes multiple wall portions foldably joined together. At least two of the wall portions are joined at a fold joint of at least three spaced apart vertical creases.