"Our nowcasting exercise reveals that CPI inflation is tracking around 7.4% yoy in September vs. 7.0% yoy in August," chief India economist Kaushik Das said in a note dated Sept. 20.

India's retail inflation has stayed above the Reserve Bank of India's upper tolerance range of 6% for eight straight months through August.

The foreign bank expects inflation to average at 7% in October-December and 6.4% in January-March, with a full-year average projection of 6.9%, higher than the RBI's 6.7% estimate.

The RBI's inflation target stands at 4%, with 200 basis points tolerance on either side.

Deutsche Bank expect core inflation to be 6.1% in September and to average 6% for the current financial year, with risks biased to the upside given that services-related inflation momentum could gain traction in the coming months.

(Reporting by Dharamraj Lalit Dhutia; Editing by Savio D'Souza)