Critically evaluate the challenge of capturing the informal economy in India's evolving statistical indicators.

India's informal economy — unincorporated, unregistered enterprises and own-account workers — remains its employment backbone, with self-employment near 56% and casual labour about a fifth of all workers [3]. New high-frequency indicators improve measurement of the formal economy, but capture this larger segment only indirectly.

Advances in the statistical architecture

• Administrative-data turn: the upcoming Index of Services Production (ISP), base year 2024-25, uses a "tri-source" model — GST turnover data, administrative records for banking and insurance, and the new survey ASISSE [2].
• Filling a real gap: services contribute over half of GDP but had no short-term output index comparable to the IIP; ISP supplies a monthly signal [2].
• Lower cost and burden: tax records replace sporadic surveys, giving faster, near-census coverage of registered firms [2].
• Consultative rollout: an approach paper, FAQs and a phased trial release allow methodology to be tested publicly [1].

Why the informal economy still escapes capture

• Threshold exclusion: GST registration is not mandatory below ₹20 lakh all-India turnover (₹10 lakh in Manipur, Mizoram, Nagaland, Tripura), so most small service units never enter the frame [1].
• Definitional limit: ISP covers only enterprises registered under the GST Act / Companies Act — the informal sector is excluded by design, not accident [1].
• Formalisation bias: migration of existing activity into the tax net can appear as fresh growth, overstating momentum.
• Frequency mismatch: informal activity is visible only through periodic surveys such as PLFS and unincorporated-enterprise surveys, leaving policy with a monthly signal for the formal half alone [3].
• Acknowledged partiality: the approach paper itself targets around 70% of services GVA, conceding residual gaps [2].

Administrative data is a genuine advance, but it measures the recorded economy, not the whole economy. The way forward is complementarity — pair GST-based indices with strengthened periodic informal-sector surveys, publish explicit coverage caveats with every release, and exploit digital-payment and GSTN sampling frames to build indicators for unregistered units. Measured honestly, such statistical capacity-building advances SDG 17.19 and makes growth data genuinely inclusive.