BG Prasad Scale Calculator
Last updated: September 09, 2026 · Default CPI-IW: 153.2 (July 2026, Labour Bureau)
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Edit CPI-IW:
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↳ Type any value above to recalculate instantly |
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| Social Class | Per Capita Monthly Income (₹) |
| Class I (Upper) | – |
| Class II (Upper Middle) | – |
| Class III (Middle) | – |
| Class IV (Lower Middle) | – |
| Class V (Lower) | – |
Correction factor: – · Class boundaries use continuous ranges (no gaps). Edit CPI-IW above to recalculate live.
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How the Calculation Works
Class Income = 1961 Base Income × Correction Factor
4.93, 4.63, and 2.88 are the Labour Bureau's linking factors connecting the 1960→1982→2001→2016 CPI-IW series, so the 1961 base incomes stay comparable to today's rupee values.
How to find the latest CPI-IW?
The latest CPI-IW values are published regularly on the Labour Bureau website (Ministry of Labour and Employment, GoI).
Click Here to Go to Labour Bureau WebsiteFAQs
What CPI-IW value does this calculator use by default?
The latest figure published by the Labour Bureau. You can overwrite it above to recalculate instantly.
What are linking factors and why 4.93, 4.63, and 2.88?
They connect the four CPI-IW base-year series (1960, 1982, 2001, 2016) back to the original base of 100, keeping old and current values comparable.
How is the correction factor calculated?
Correction factor = Current CPI-IW × 4.93 × 4.63 × 2.88 ÷ 100. Each 1961 base income is multiplied by this factor.
Why are there no gaps between classes here?
Boundaries are calculated as continuous ranges instead of rounding each end separately, so every income value falls into exactly one class.
About the BG Prasad Scale
The BG Prasad Scale, introduced by Dr. B.G. Prasad in 1961, classifies families into five socioeconomic classes based on per capita monthly income. Since it was built on a 1960 CPI base of 100, it is periodically updated using the CPI-IW published monthly by the Labour Bureau, Ministry of Labour & Employment, Government of India.
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