In terms of business benefits, spiral development is faster than the traditional model, and so saves cost and effort.

As risk evaluation is well defined in proper method, larger projects are created and handled in a strategic way. Also, it adds control during all the phases of software development.

Spiral model produces the intermediate deliverables at end of each iteration. It gives a great opportunity for the end customers to share their feedback during the early stage. Apparently, this systematic approach means software change management can be implemented faster.