What is the Index of Services Production (ISP)?
The Index of Services Production (ISP) is a monthly high-frequency macroeconomic indicator developed by the Ministry of Statistics and Programme Implementation (MoSPI) to measure short-term changes in the real output of India's formal services sector. It serves as a counterpart to the existing Index of Industrial Production (IIP) for the industrial sector.
Why was ISP Introduced?
- Significance of Services Sector: Services contribute over 50% of India's Gross Value Added (GVA) since 2013-14
- Data Gap: Despite this dominance, no monthly, high-frequency indicator existed to track real growth in the services sector
- Policy Need: The ISP strengthens economic monitoring, supports policy formulation, and improves economic forecasting
- Complementary Role: It complements the IIP in tracking overall economic activity
Key Features of ISP
Scope and Limitations
- Restricted to formal sector only
- Excludes: Non-market government activities, personal services, informal sector, public administration & defence, gambling, and government-run health/education
Methodological Framework
- Base Year: 2024-25 (aligned with rebased CPI series)
- Index Type: Fixed-weight Laspeyres volume index
- Weighting: GVA-based weights reflecting relative economic importance of each services sector
- Output Measurement: Tracks volume of output, transforming nominal turnover into real growth using deflators
Data Sources
| Source | Sectors Covered |
|---|---|
| Administrative/Secondary Data | Air Transport, Railways, Banking, Insurance |
| GST Data | Trade, Transport, Telecommunications, Accommodation, Real Estate, Professional Services, Arts & Recreation |
| ASISSE Data | Health and Education (excluding government) |
Measurement Approach
- Quantity-based indicators: Air Transport and Railways (e.g., passenger-kilometres)
- Value-based indicators: Most other services use turnover, sales, or GST outward supplies
- Preferred method: Turnover adjusted (deflated) by appropriate price index
Deflators Used
- WPI: For wholesale trade
- Sector-specific CPI: Where available
- CPI General: For banking and insurance
- CPI Non-Food: For other services
Important Note on Deflators
Since comprehensive Service Producer Price Indices (SPPI) are unavailable, MoSPI uses CPI (Non-Food) as a proxy deflator. This is justified because over 80% of non-food inflation is directly linked to services or their cost-push factors such as energy, transport, and housing.
Implementation Timeline
- Trial Phase: Experimental/trial indices for 2025-26 and April 2026 to be released from July 2026
- Regular Dissemination: Monthly release with 60-day lag after stability is ensured
Institutional Framework
- Technical Advisory Committee (TAC): Chaired by Debjani Ghosh
- Developing Ministry: Ministry of Statistics and Programme Implementation (MoSPI)
- Improved Data Ecosystem: Made possible by high-frequency GST data and launch of Annual Survey of Incorporated Services Sector Enterprises (ASISSE)
Relevance for UPSC Preparation
For Prelims
- Memorize key facts: base year (2024-25), launch date (July 2026), 50% GVA contribution threshold
- Remember the deflator choices for different sectors
- Understand sectors excluded from ISP coverage
For Mains
- Analyze the significance of ISP for economic monitoring and policy formulation
- Understand the methodological framework (Laspeyres volume index)
- Connect with broader topics: GDP measurement, economic reforms, formalization of economy
Related Concepts
Comparison: ISP vs IIP
| Aspect | ISP | IIP |
|---|---|---|
| Sector | Services | Industry |
| Coverage | Formal services | Manufacturing, Mining, Electricity |
| Launch | July 2026 | Already existing |
Connection with GST Data
The availability of high-frequency GST data on outward supplies of service enterprises has been crucial for ISP compilation. Service Accounting Codes (SACs) are mapped to National Industrial Classification (NIC) codes for data categorization.