• Karnataka's Congress government approved a fresh internal reservation (sub-classification) matrix within the state's 15% SC quota, splitting it among three categories — 5.25% (Cat 1), 5.25% (Cat 2), 4.5% (Cat 3) [S1].
• This followed the 2024 Supreme Court verdict in State of Punjab v. Davinder Singh permitting states to sub-classify SCs for more equitable distribution of reservation benefits — a live constitutional-law + social-justice issue for Prelims/Mains [S1][S2].
• Relevant for GS-II (federalism, social justice, SC judgments) and GS-I (society, caste dynamics).
• Karnataka is the second State after Telangana to operationalise SC sub-classification post the 2024 verdict — a template other states may follow.

2. Why in the News

• On Friday, 25 April 2026, the Karnataka Cabinet, in a special meeting, unanimously approved a matrix giving 5.25% each to Category 1 (Madigas and allied/Dalit-left) and Category 2 (Holeyas and allied/Dalit-right), and 4.5% to Category 3 (Bhovi, Lambani, Korama, Koracha and 59 nomadic communities) within the 15% SC reservation [S1].
• CM Siddaramaiah called it a "historic" and unanimous Cabinet decision, tracing the commitment to the 2023 Chitradurga convention and Congress election manifesto [S1].
• Note: this April 2026 matrix appears to be a revision/second attempt, distinct from the earlier August 2025 Cabinet decision (6%-6%-5% matrix, based on the Justice Nagmohan Das Commission report, within the then-17% SC quota) [S3][S4].

3. Background & Evolution

• Justice A.J. Sadashiva Commission: earlier panel that first examined internal reservation among Karnataka's SCs [S4].
• First sub-classification attempt: apportioned 6% each to Dalit-left and Dalit-right, and 5% to "touchable" communities and Alemaris, within the then 17% SC reservation [S1].
• 2023: Congress party's Chitradurga convention and election manifesto committed to internal reservation for SCs [S1].
• August 4, 2025: Justice H.N. Nagamohan Das Commission submitted a 1,766-page report after a two-month survey, recommending sub-categorisation of 101 SC communities, proposing a 1:6:5:4:1 matrix (five groups) [S3].
• August 19, 2025: Karnataka Cabinet rejected the Das Commission's five-group formula and instead approved a three-group 6:6:5 matrix within 17% SC quota; an ordinance was planned post the Monsoon Session [S3].
• April 25, 2026: Cabinet approves a further revised matrix — 5.25:5.25:4.5 within a reduced 15% SC quota — this is described as the "second sub-classification attempted" by the State [S1].

4. Core Static Facts

Item	Detail
Total SC communities covered	101 Scheduled Castes in Karnataka [S1][S3]
Current SC quota (2026 matrix)	15% (down from earlier 17%) [S1]
Category 1	Madigas and allied castes / "Dalit-left" — 5.25% [S1]
Category 2	Holeyas and allied castes / "Dalit-right" — 5.25% [S1]
Category 3	Bhovi, Lambani, Korama, Koracha + 59 nomadic communities ("touchable"/Alemaris) — 4.5% [S1]
Implementing authority	Karnataka Cabinet (Congress government under CM Siddaramaiah) [S1]
Key commissions	Justice A.J. Sadashiva Commission; Justice H.N. Nagamohan Das Commission (2025 report, 1,766 pages) [S3][S4]
Enabling SC judgment	State of Punjab v. Davinder Singh (2024) — 7-judge Constitution Bench allowed sub-classification of SCs [S2]
Political trigger	2023 Chitradurga convention + Congress manifesto commitment [S1]
Legislative mechanism used earlier	Ordinance route contemplated post August 2025 Cabinet decision [S3]

5. Multi-Dimensional Analysis

Social

• Addresses intra-SC inequity — dominant sub-castes (Madiga, Holeya) historically cornering most reservation benefits over smaller/nomadic SC groups [S1][S3].
• Sharpens intra-Dalit political fault lines: "Dalit-left" vs "Dalit-right" vs nomadic/"touchable" SC groups, each lobbying for a larger share [S1].

Legal/Constitutional

• Directly operationalises the 2024 SC ruling permitting sub-classification under Articles 341/342 read with reservation provisions, provided states use "quantifiable and defensible" data [S2][S3].
• Reliance on empirical commission data (Sadashiva, Nagamohan Das) reflects the SC's requirement that sub-classification be backed by evidence, not just political consensus [S3][S4].

Ethical/Governance

• Cabinet's claim of "unanimous" and "historic" decision-making contrasted with continuing opposition from Category 1 (Dalit-left) and "touchable" Category 3 communities, who fear restricted access to education/employment opportunities [S1].
• Raises transparency question: shift from 17% to 15% overall SC quota and change from 6:6:5 (Aug 2025) to 5.25:5.25:4.5 (April 2026) needs public justification.

Administrative

• Implementation route (ordinance vs Act) and enforcement in public education/employment recruitment remain to be operationalised [S3].
• Persistent renegotiation (two sub-classification attempts within under a year) signals administrative and political instability in execution.

Historical

• Builds on decades-long Dalit-left vs Dalit-right rivalry in Karnataka predating the Sadashiva Commission.

6. Recent Developments (last 12-18 months)

• August 4, 2025: Justice Nagamohan Das Commission submits 1,766-page report recommending 101-caste sub-categorisation [S3].
• August 19, 2025: Cabinet approves first revised matrix — 6% (Dalit-left), 6% (Dalit-right), 5% (touchable/nomadic) within 17% SC quota, rejecting the Commission's 5-tier formula [S3].
• April 25, 2026: Cabinet approves a second, revised matrix — 5.25%/5.25%/4.5% within a 15% SC quota, termed "historic" by CM Siddaramaiah [S1].

7. Prelims Hooks

• Karnataka's SC sub-classification covers 101 Scheduled Caste communities [S1][S3].
• April 2026 matrix: Category 1 & 2 get 5.25% each; Category 3 gets 4.5%, within a 15% SC quota [S1].
• Earlier (first) matrix: 6% Dalit-left, 6% Dalit-right, 5% "touchable"/Alemaris, within 17% SC quota [S1].
• Category 1 = Madigas and allied castes ("Dalit-left") [S1].
• Category 2 = Holeyas and allied castes ("Dalit-right") [S1].
• Category 3 = Bhovi, Lambani, Korama, Koracha and 59 nomadic communities [S1].
• CM at the time of the decision: Siddaramaiah (Congress) [S1].
• Political commitment traced to the 2023 Chitradurga convention and Congress election manifesto [S1].
• Justice Nagamohan Das Commission report (2025) ran to 1,766 pages, based on a two-month survey [S3].
• Earlier commission on the subject: Justice A.J. Sadashiva Commission [S4].
• Enabling Supreme Court precedent: State of Punjab v. Davinder Singh (2024), a 7-judge bench ruling allowing SC sub-classification [S2].
• Karnataka is described as the second State to attempt SC sub-classification after the 2024 verdict (Telangana notified earlier) [S2].
• Implementation route contemplated: an ordinance, post the Monsoon Session of the Assembly [S3].

8. Mains Relevance

• GS-I: Society — caste, social empowerment, vulnerable sections.
• GS-II: Polity/Governance — federalism, reservation policy, Supreme Court judgments and their state-level implementation, issues of social justice.
• Possible question stems:
• "Discuss the implications of the Supreme Court's verdict permitting sub-classification of Scheduled Castes, with reference to Karnataka's experience in implementing internal reservation." (GS-II)
• "Sub-classification within reserved categories seeks to address intra-group inequality but risks creating fresh fault lines. Discuss with examples." (GS-I/II)
• "Examine the constitutional and administrative challenges in operationalising SC/ST sub-classification following the 2024 Supreme Court ruling." (GS-II)

9. Related Topics to Study Next

• State of Punjab v. Davinder Singh (2024) SC verdict — the constitutional basis enabling this sub-classification [S2].
• Indra Sawhney judgment & creamy layer concept — parallel debate on excluding advanced sections from OBC/SC benefits.
• Telangana's SC sub-classification move — comparative case study of another state implementing the same verdict.
• Justice Nagamohan Das & Sadashiva Commission reports — data/methodology basis for such classifications.
• Articles 341 and 342 of the Constitution — constitutional basis for SC/ST notification and amendment.
• 102nd Constitutional Amendment Act — relevant to backward classes list-making powers (comparative constitutional mechanism).
• Reservation policy debates — 50% ceiling (Indra Sawhney) — juxtapose with intra-quota sub-classification.

10. Common Errors / Trap Areas

• Confusing the August 2025 matrix (6:6:5 within 17%) with the April 2026 matrix (5.25:5.25:4.5 within 15%) — these are two distinct Cabinet decisions, not the same event.
• Mixing up Justice Sadashiva Commission (earlier) with Justice Nagamohan Das Commission (2025, 101-caste survey) — different commissions, different reports.
• Assuming sub-classification changes the overall SC reservation ceiling — it only redistributes the existing SC quota internally; do not confuse with the overall 50%-reservation-ceiling debate.
• Mislabelling Category 3 — it includes nomadic/semi-nomadic groups (Bhovi, Lambani, Korama, Koracha, etc.), not a single caste.
• Assuming this is India's first sub-classification attempt — Punjab and Tamil Nadu had prior sub-quota mechanisms predating the 2024 verdict; Karnataka/Telangana are post-verdict implementers.

11. Sources

• [S1] Karnataka Cabinet approves sub-classification for SC quota — The Hindu — https://www.thehindu.com/todays-paper/2026-04-25/th_international/articleG65FT8D8L-14363067.ece — (tier: 4)
• [S2] SC Quota Sub-classification: Karnataka Approves Internal Reservation – Supreme Court View Explained — UnderStand UPSC — https://www.understandupsc.com/sc-quota-sub-classification/ — (tier: 4)
• [S3] Karnataka Cabinet Approves Internal Quota, Slicing SC Reservation Into 3 Categories — Ground News (aggregating original reporting) — https://ground.news/article/ktaka-cabinet-decides-to-provide-internal-reservation-among-scs-cm-to-announce-in-assembly-today — (tier: 4)
• [S4] Karnataka: What the Revision of Internal Reservation for Scheduled Castes Means for the Community — The Wire — https://m.thewire.in/article/politics/karnataka-what-the-revision-of-internal-reservation-for-scheduled-castes-means-for-the-community — (tier: 4)