The growing importance of Information System (IS) to support business operation demands for
adequate IS planning. Good IS planning enables organizations to closely align the IS and
strategic business objectives. Such alignment ultimately ensures organizations to gain
competitive advantages from IS-related investment. Despite extensive works to understand
SISP practices in large organizations, works are still limited in the context of Small and Medium
Enterprise (SMEs). This issue is worth further investigation in view of the increasing
importance of IS to support many facets of the SMEs operation. More importantly, due to
inherent resource constraints among SMEs to invest in IS, top management commitment as
well as user participation in IS planning activities are getting more crucial. This study, therefore
proposes a framework to assess the effect of top management commitment and user
participation on SISP success. The findings are of relevance for firm’s top management in
ensuring SISP success.