Despite the moderation, the services PMI was in the expansion territory for the 10th straight month. In PMI parlance, a print above 50 means expansion, while a score below that denotes contraction.
"Indian service sector growth weakened at the end of the fourth quarter of FY18, with activity expanding at the slowest rate since last September," said Pollyanna De Lima, Principal Economist at IHS Markit, author of the report.
Separate PMI data for manufacturing, issued a couple of days back, showed that factory activities also grew at a six-month low in March. As such, the composite PMI output index, that maps the private sector activities, dipped from 53.8 in February to a six-month low of 52.7 in March.
This pointed to a slower upturn in private sector output and rounded off a weaker quarterly performance in Q4 than registered in Q3 FY'19. PMI survey is based on the responses from the private sector.
Meanwhile, optimism regarding the year-ahead outlook for business activity strengthened for the second month in a row.
"Business expectations strengthened in March, indicating that services companies
are hopeful that conditions will advance in the months to come. However, an anemic pace of job creation hints that service providers are not fully convinced about a shift into a higher growth gear," Lima said.
"Digging deeper into the anecdotal evidence provided by surveyed firms, there are concerns about delayed payment from clients and a challenging economic situation," Lima said.
Firms commented that successful marketing efforts and greater demand underpinned the rise in sales, but some noted that an increasingly competitive environment acted as a brake on growth.
On the prices front, input cost inflation eased, while an acceleration was seen for services charges.