For 2025-26 as a whole, accommodation and food services remained the fastest-growing segment with annual average growth of 35.6 per cent, followed by retail trade at 30.5 per cent, administrative and support services at 13.3 per cent, repair services at 25.1 per cent and wholesale trade at 23.6 per cent. Air transport was one of the weakest-performing sub-sectors with an annual average contraction of 4.4 per cent, while railway transport recorded average growth of 2.5 per cent.
The index is compiled using GST data for most services sub-sectors, administrative data for sectors such as transport, banking and insurance, and Annual Survey of Incorporated Services Sector Enterprises (ASISSE) data for assigning weights to the sectoral indices. The ministry attributed the spikes in the indices at the end of quarters and the fiscal year to the tendency of businesses to file their GST returns towards these reporting deadlines.