Introduction

The UPSC Civil Services Preliminary Examination 2026 will test not only factual knowledge but also conceptual clarity, analytical ability, and awareness of current developments. Over the past decade, the trend of the Prelims examination has shifted towards integrating static subjects with current affairs, requiring aspirants to prepare in a focused and strategic manner.

This blog post highlights the most important topics for UPSC 2026 Prelims based on previous year question analysis, emerging national and international developments, and core foundational areas that consistently carry weightage. Aspirants should use this structured outline to prioritize their revision, strengthen weak areas, and align preparation with evolving exam patterns.

1.Geographical Indication (GI) Tags

1. What is a GI Tag?

A Geographical Indication (GI) is a sign used on products that have a specific geographical origin and possess qualities, reputation, or characteristics that are essentially attributable to that place of origin.

• Legal Framework: Governed by the Geographical Indications of Goods (Registration and Protection) Act, 1999.
• Administration: Issued by the Geographical Indication Registry (under the DPIIT, Ministry of Commerce and Industry) located in Chennai.
• Validity: Valid for 10 years, renewable indefinitely every 10 years.
• International Alignment: Complies with the TRIPS (Trade-Related Aspects of Intellectual Property Rights) Agreement of the WTO.

2. Why in the News (2025–2026)?

• Bharat GI Initiative: Launched by the DPIIT to promote Indian GI products under a unified national brand with the tagline “A World Exclusive.”
• Massive Expansion: India crossed the milestone of 650+ GI tags in early 2026.
• State Leadership: A healthy competition between Uttar Pradesh and Tamil Nadu for the highest number of GI tags has kept the topic in headlines.
• New Target: The government has set an ambitious target to reach 10,000 GI tags by 2030.

3. Latest Data (Selected Notable Tags 2025-2026)

2. Tuberculosis (TB) Elimination in India

1. Why in the News? 

The WHO Global Tuberculosis Report 2025 (released late 2025) and subsequent updates in early 2026 have highlighted India’s progress as it approaches its ambitious “Elimination” timeline.

• Target vs. Reality: India aimed to eliminate TB by 2025, five years ahead of the global Sustainable Development Goal (SDG) of 2030. While significant strides were made, the absolute elimination (defined as $<1$ case per million) is still a work in progress.
• Record Decline: India recorded a 21% decline in TB incidence from 2015 to 2024—nearly double the global decline rate of 12%.

2. The Science of TB

• Pathogen: Caused by the bacterium Mycobacterium tuberculosis. It primarily affects the lungs (Pulmonary TB) but can affect any part of the body (Extrapulmonary TB).
• Transmission: Airborne (droplets from coughs/sneezes).
• Latent vs. Active: * Latent: The bacteria remain dormant; the person is not contagious and has no symptoms.
  • Active: The bacteria multiply, making the person ill and infectious.
• Drug Resistance: * MDR-TB: Resistant to at least Isoniazid and Rifampicin (the two most powerful first-line drugs).
  • XDR-TB: Resistant to Isoniazid and Rifampicin, plus any fluoroquinolone and at least one of three injectable second-line drugs.

3. Latest Data & Indices (2025-26)

4. Government Initiatives

1. Ni-kshay Portal: A unified ICT device for monitoring TB patients and their treatment adherence.
2. Ni-kshay Poshan Yojana: Provides ₹500/month DBT to patients for nutritional support.
3. Pradhan Mantri TB Mukt Bharat Abhiyan (2022): Focused on community participation; “Ni-kshay Mitras” (donors) provide additional diagnostic/nutritional support to patients.
4. BPaLM Regimen: A new, shorter 6-month treatment for drug-resistant TB (replacing the older 18–24 month regimens).
5. Indigenous TB Model: India developed its own mathematical model to estimate TB burden, shifting away from total reliance on WHO estimates.

3. GST Compensation Cess

1. What is GST Compensation Cess?

• Definition: It is a cess levied under the GST (Compensation to States) Act, 2017.
• Purpose: GST is a destination-based tax (consumption-based). This meant manufacturing-heavy states (like Maharashtra, Gujarat, and Tamil Nadu) feared a revenue loss because the tax would go to the state where the good was consumed, not where it was produced.
• The Guarantee: To bring states on board, the Centre guaranteed a 14% annual growth in their GST revenue for the first 5 years (July 2017 – June 2022). Any shortfall below this 14% target was to be compensated by the Centre using the proceeds of this Cess.
• Levy: It is applied over and above the GST rate on “Sin” and luxury goods (e.g., tobacco, aerated drinks, coal, and luxury cars).
• Fund: The proceeds are credited to a non-lapsable GST Compensation Fund in the Public Account of India.

2. Why is it in the News? (The 2025-26 Context)

The GST Compensation Cess has undergone significant shifts in late 2025 and early 2026:

• Repayment of Pandemic Loans: During the COVID-19 pandemic, cess collections were insufficient. The Centre borrowed approximately ₹2.69 lakh crore to pay states. The levy was extended beyond June 2022 to March 31, 2026, specifically to repay this debt.
• GST 2.0 Reforms: In September 2025, the 56th GST Council meeting introduced a simplified tax structure. Most items previously under the 28% slab + Cess were moved to a new 40% demerit rate, effectively merging the cess into the GST rate for most goods (like luxury cars).
• Phasing Out: As of February 1, 2026, the government officially ended the GST Compensation Cess on tobacco and related products, replacing it with the Health Security and National Security Cess and increased excise duties. This marks the functional end of the “Compensation Cess” era as the loan obligations have been largely discharged.

3. Latest Data (as of early 2026)

4. GBU-57 Massive Ordnance Penetrator (MOP)

1. What is GBU-57?

The GBU-57 MOP is the world’s most powerful non-nuclear “bunker-buster” bomb.

• Design Purpose: It is a precision-guided, conventional weapon designed to neutralize Hard and Deeply Buried Targets (HDBTs), such as underground command centers, laboratories, and nuclear facilities that are protected by thick layers of rock or reinforced concrete.
• Key Specifications:
  • Weight: Approximately 30,000 pounds (13,600 kg), making it much heavier than the “Mother of All Bombs” (MOAB).
  • Penetration: It can penetrate up to 200 feet (60 meters) of earth or 60 feet (18 meters) of reinforced concrete before detonating.
  • Guidance: Uses a combination of GPS and Inertial Navigation Systems (INS) for high-precision strikes.
  • Platform: Due to its immense size, it can currently only be deployed by the Northrop B-2 Spirit stealth bomber (which can carry two). Integration with the newer B-21 Raider is expected.

2. Why is GBU-57 in the News? (2025–2026 Context)

The GBU-57 has dominated global defense headlines recently due to its first-ever operational use:

• Operation Midnight Hammer (June 2025): In June 2025, the U.S. Air Force utilized GBU-57 bombs in combat for the first time. Reports indicate that 14 MOPs were dropped by B-2 bombers on deeply buried nuclear facilities in Iran (specifically the Fordow and Natanz sites).
• 2026 Restocking Contract: In February 2026, the Pentagon awarded a $100 million+ contract to Boeing to replenish the inventory of GBU-57s expended during the 2025 operations.
• The “Next-Gen” Successor: The U.S. has announced that the current procurement will be the last for the GBU-57 as they transition to the Next-Generation Penetrator (NGP), which promises even deeper penetration and enhanced technology.

3. Latest Data 

5. Non-Communicable Diseases (NCDs)

1. What are NCDs?

NCDs, also known as chronic diseases, are medical conditions that are not transmissible from person to person. They are typically of long duration and result from a combination of genetic, physiological, environmental, and behavioral factors.

• Four Major Types:
  • Cardiovascular Diseases: Heart attacks and stroke (Leading cause of NCD deaths).
  • Cancers: Oral, Breast, and Cervical are the most prevalent in India.
  • Chronic Respiratory Diseases: COPD and Asthma (often linked to air pollution).
  • Diabetes: India is often called the “Diabetes Capital of the World.”
• The Risk Factors:
  • Behavioral: Tobacco use, unhealthy diet (high salt/sugar), physical inactivity, and harmful use of alcohol.
  • Metabolic: Raised blood pressure (Hypertension), obesity, and high blood glucose.
  • Environmental: Air pollution is now recognized as a major driver of NCDs.

2. Why is it in the News? (2025–2026 Context)

• The 2025 UN Political Declaration: In December 2025, the 80th UN General Assembly adopted a historic declaration integrating Mental Health with NCDs for the first time, recognizing them as joint priorities for the 2030 Sustainable Development Goals (SDG 3.4).
• India’s “75/25” Initiative Update (March 2025): The Ministry of Health reported that it has successfully put over 42 million people with hypertension and 25 million with diabetes on standardized care, aiming to reach 75 million by December 2025.
• World Obesity Atlas 2026: Released in early 2026, this report ranked India second globally in the number of children with obesity, warning of a future “NCD explosion.”
• Intensified Screening Drive: In 2025-26, India launched a nationwide campaign through Ayushman Arogya Mandirs to achieve 100% screening of all individuals aged 30+ for NCDs.

3. Latest Data (2026)

6. Research Development and Innovation (RDI) Scheme

1. What is the RDI Scheme?

The RDI Scheme is a flagship financial initiative designed to catalyze private sector investment in research and development.

• Financial Corpus: A dedicated fund of ₹1 lakh crore ($12 billion approx.) to be deployed over 7 years.
• Target: Specifically aimed at “Sunrise Sectors” (emerging technologies with high growth potential) and Deep-Tech startups.
• Funding Mechanism: It uses a Two-Tier Model:
  • Tier 1: A Special Purpose Fund (SPF) under the Anusandhan National Research Foundation (ANRF) acts as the custodian.
  • Tier 2: Funds are channeled through Second-Level Fund Managers (SLFMs) like NBFCs, Banks, or agencies like BIRAC and TDB, who then provide low-interest loans or equity to companies.
• TRL Focus: Unlike traditional grants that fund basic research, the RDI scheme focuses on High Technology Readiness Levels (TRL 4 and above)—moving technologies from the lab prototype to market-ready products.

2. Why is it in the News? (2025–2026 Context)

The scheme has been a major headline in the 2025-26 fiscal year for several reasons:

• Operationalization (Feb 2026): In February 2026, the first tranche of ₹3,000 crore was released for disbursement before the fiscal year-end.
• Deep-Tech Fund of Funds: A significant portion of the corpus was officially earmarked for the “Deep-Tech Fund of Funds” to support startups in quantum computing and space tech.
• ESTC 2025: The scheme was formally launched by the Prime Minister at the Emerging Science, Technology, and Innovation Conclave (ESTIC) in November 2025.
• Budget 2026-27: The February 2026 Union Budget reaffirmed an allocation of ₹20,000 crore for the upcoming year, signaling long-term fiscal commitment.

3. Latest Data (March 2026)

7. Exercise Shakti

1. What is Exercise Shakti?

Exercise Shakti is a biennial (held once every two years) joint military exercise conducted between the Armies of India and France.

• Genesis: The exercise began in 2011 to strengthen the strategic partnership between the two nations, which was established in 1998.
• Hosting: It is hosted alternately by India and France.
• Primary Objective: To enhance interoperability and operational coordination between the two armies, specifically focusing on Counter-Terrorism (CT) operations in semi-urban and mountainous terrain.
• Legal Framework: The drills often simulate scenarios under Chapter VII of the United Nations Charter, which relates to “Action with Respect to Threats to the Peace, Breaches of the Peace, and Acts of Aggression.”

2. Why was it in the News? 

The exercise has been prominent in recent news cycles (2025–2026) due to the completion of its 8th edition:

• Exercise Shakti-VIII (June 2025): The 8th edition was conducted at Camp Larzac, La Cavalerie, France, from June 18 to July 1, 2025.
• Participants: The Indian Army was represented by a 90-member contingent, primarily from the Jammu and Kashmir Rifles. The French side was represented by the 13th Foreign Legion Half-Brigade (13 DBLE).
• Significance: This edition stood out for its focus on Multi-Domain Operations in a sub-conventional scenario and the use of modern military technology, including niche equipment like drones and electronic warfare tools.
• Vayu Shakti 2026 Connection: In late February 2026, India also conducted Exercise Vayu Shakti-26 (an IAF firepower demonstration). Aspirants should not confuse the two; Shakti is bilateral/army, while Vayu Shakti is domestic/air force.

3. Latest Data 

8. INS Tamal

1. What is INS Tamal?

INS Tamal is the second ship of the Nilgiri-class (Project 17A) Stealth Frigates. These are advanced guided-missile frigates being built for the Indian Navy.

• Design Philosophy: They are follow-on ships to the Shivalik-class (Project 17) but feature significantly improved stealth features, advanced weapons, and sensors.
• Key Specifications:
  • Stealth: Low radar cross-section (RCS) design achieved through shifted hull lines and integrated antennae.
  • Armament: Equipped with BrahMos supersonic cruise missiles and Barak-8 (LRSAM) surface-to-air missiles.
  • Indigenization: Over 75% of the components are sourced from Indian industries, including MSMEs.
  • Builder: Garden Reach Shipbuilders & Engineers (GRSE), Kolkata.

2. Why in the News? 

INS Tamal has been a highlight of maritime defense news recently due to its commissioning status:

• Commissioning (February 2026): INS Tamal was officially commissioned into the Indian Navy in February 2026 at the Eastern Naval Command in Visakhapatnam.
• Sea Trials Success: Throughout late 2025, the vessel completed a series of grueling sea trials, proving its “Integrated Platform Management System” and its ability to operate in high-threat environments.
• Strategic Indo-Pacific Role: Its commissioning is seen as a direct response to the increasing presence of extra-regional navies in the Indian Ocean Region (IOR).

3. Project 17A

Project 17A involves the construction of seven stealth frigates (4 by Mazagon Dock and 3 by GRSE).

9.Employment Linked Incentive (ELI) Scheme

1. What is the ELI Scheme?

The ELI is a Central Sector Scheme designed to boost formal job creation by providing financial incentives to both employees and employers. It is part of the “Prime Minister’s Package for Employment and Skilling.”

The scheme is structured into three primary components:

• Scheme A (First-time Employees): Direct benefit to youth entering the formal workforce.
  • Incentive: One month’s wage (up to ₹15,000) in two installments.
  • Condition: Must be registered with EPFO and earn < ₹1 lakh/month.
• Scheme B (Manufacturing Sector): Focuses on labor-intensive growth in manufacturing.
  • Incentive: Incentives for both employee and employer regarding EPFO contributions for the first 4 years.
• Scheme C (Support to Employers): General support for additional hiring across all sectors.
  • Incentive: Reimbursement of up to ₹3,000/month to employers for 2 years for each additional employee hired.

2. Why is it in the News? 

• Implementation Phase: The scheme officially came into effect on August 1, 2025, and is active for jobs created until July 31, 2027.
• Viksit Bharat Goals: It is a key pillar for the “Viksit Bharat @ 2047” vision, aiming to formalize 19.2 million first-time workers and create a total of 3.5 crore jobs in two years.
• Financial Literacy Mandate: A unique feature in the news is the requirement for employees to complete a Financial Literacy Course on the EPFO portal to unlock their second incentive installment.

3. Latest Data 

10. INS Udaygiri

1. What is INS Udaygiri?

INS Udaygiri (F35) is the second of seven stealth frigates being built under Project 17A (Nilgiri-class).

• Project 17A: A follow-on to the Project 17 (Shivalik-class), these ships are designed with much more advanced stealth features, weapons, and sensors.
• Indigenization: The ship features approximately 75% indigenous content, involving over 200 MSMEs.
• Design: It was designed in-house by the Indian Navy’s Warship Design Bureau (WDB). Notably, INS Udaygiri is the 100th ship designed by the WDB.
• Builder: Mazagon Dock Shipbuilders Limited (MDL), Mumbai.
• Naming Tradition: It is named after the Udaygiri mountain range in Andhra Pradesh and carries forward the legacy of the erstwhile Leander-class frigate INS Udaygiri (1976–2007).

2. Why was it in the news? 

The vessel has been a focal point of India’s maritime strategy due to several recent milestones:

• Commissioning (August 26, 2025): In a historic first for the Indian Navy, two frontline warships—INS Udaygiri and INS Himgiri—were commissioned simultaneously during a ceremony in Visakhapatnam. This marked the first time two ships from different yards (MDL and GRSE) were inducted on the same day.
• Record Construction: It was delivered to the Navy in July 2025 in a record time of just 37 months from its launch, showcasing the efficiency of “Integrated Construction” methodology.
• Operational Role: As of early 2026, INS Udaygiri is active in the Eastern Fleet, playing a critical role in the Indo-Pacific region as part of India’s “First Responder” and “Preferred Security Partner” vision.

3. Key Technical Specifications

Conclusion

As the UPSC Prelims 2026 approaches, the integration of traditional core subjects with rapidly evolving current developments remains the primary challenge. The topics discussed in this segment—ranging from the legal nuances of Geographical Indication tags and fiscal federalism in GST to high-end defense indigenization and public health strategies—reflect the multi-disciplinary nature of the examination.

Success in the Preliminary stage requires more than just memorization; it demands an understanding of the “Why” and “How” behind every news headline. Whether it is the strategic significance of a stealth frigate like INS Udaygiri or the socioeconomic impact of the Employment Linked Incentive (ELI) scheme, aspirants must focus on the interconnectedness of these events with India’s broader national goals, such as Atmanirbhar Bharat and Viksit Bharat 2047.

Use this guide as a template to refine your revision. Prioritize areas with high technicality—such as the BPaLM regimen in TB treatment or the TRL levels in the RDI scheme—as these are the details where the UPSC often frames tricky statements. Stay consistent, keep your resources limited, and continuously test your knowledge through high-quality MCQs to bridge the gap between information and application.