"We expect muted revenue growth for Tier I players due to the usual end-of-the-year furloughs and continued softness in banking financial services (BFS) and North America," Kotak Institutional Equities said in a research note.
Meanwhile, mid-tier companies are expected to report higher growth powered by a ramp-up in deals.
"We see enough reasons to be optimistic on demand and revenue acceleration, though implications of US tax reform and potential changes to visa rules in US remain an overhang," it added.
Revenue growth for Indian IT companies decelerated in year 2017 on account of lacklustre growth in BFS, regulatory issues in US healthcare and challenges in the retail vertical.
Changes in sourcing strategy of clients and slow progress on digital and sub-optimal participation of Indian IT also affected revenue growth of domestic IT companies.
Going forward, investor focus will be on calendar year 2018 IT budgets and demand outlook, especially in case of drag verticals of calendar year 2017, pick-up in digital spends, and industrialisation of digital services, the report said.
It further said that the other areas of investor focus should be implications of US tax reforms and H-1B dependency.
"The imposition of Base Erosion and Anti-abuse Tax (BEAT) on payments made by US companies to its foreign affiliates will impact select Indian IT companies," it said, adding, "Investors may also focus on H-1B dependency as one cannot rule out some change in US visa regulations in 2018."