How do indices such as NITI Aayog's Investment Friendliness Index strengthen competitive federalism? What are their limitations?

Competitive federalism means States competing with each other for investment and growth through reform. NITI Aayog's first Investment Friendliness Index (IFI), released in July 2026, ranks States and UTs on investment readiness. It places Gujarat, Maharashtra and Tamil Nadu at the top [1]. Indices like this push States to reform, but only as far as their indicators reach.

How such indices strengthen competitive federalism

• Benchmarking and peer pressure: Public rankings turn reform into a contest of reputation. Lower-ranked States face pressure from investors and voters to catch up [1].
• Diagnosis of each State's gaps: The IFI flagged inadequate industrial water supply in Tamil Nadu's landlocked and rain-shadow districts, even though the State ranks 3rd [1].
• Focus on delivery: It rewards results, such as MoU conversion into real projects, and not only investment summit announcements [1].
• Investor signalling: Domestic and foreign investors get one comparable reference for choosing a location. Capital then flows to States that perform.
• Spread of best practice: Lagging States can copy leaders' policies. NITI Aayog acts as a facilitator, not a fund allocator like the old Planning Commission.

Limitations

• Blind spot on sustainability: The index asks whether investors can get water, not who loses it. A CGWB profile records about 77% groundwater development and 374 over-exploited blocks in Tamil Nadu [2]. A better rank built on water-intensive projects could deepen this stress.
• Averages hide districts: Groundwater stress varies at block level, as the CGWB 2024 dynamic assessment shows [3]. A single State score can hide distressed interior districts.
• Race to the bottom: States may compete through tax holidays or weaker environmental and labour rules instead of genuine capacity.
• Unequal starting points: Coastal, already-industrialised States have a built-in advantage. Landlocked, hilly and North-Eastern States may stay behind, which works against balanced regional development.
• Method concerns: Perception surveys are subjective and indicator weights can be disputed. A one-time snapshot cannot capture long-term trends.

Indices like the IFI have made investment readiness measurable and comparable, which is a real gain for competitive federalism. They should now add sustainability indicators, such as those in NITI's Composite Water Management Index. They should also use district-level data and come with hand-holding support for lagging States. That would combine competition with cooperative federalism and support SDG 6 (water) and SDG 9 (industry) together.