NPS vs OPS: The Great Indian Pension Debate

Every month, the Government of India pays pensions to roughly 69 lakh central civil pensioners and their families. Add state government pensioners, and you cross the 2.5 crore mark. The annual pension bill for the central government alone crossed Rs 2.4 lakh crore in 2024-25 -- and that is for employees who retired under OPS, before 2004. This number will keep climbing for the next 15-20 years as pre-2004 retirees continue to draw inflation-indexed pensions.

Simultaneously, about 50 lakh central government employees recruited after January 1, 2004, are enrolled under NPS. They watched as their predecessors retired with guaranteed half-salary pensions while their own retirement corpus fluctuated with equity and bond markets. The resentment is real, and it has turned into a powerful political movement. Between 2022 and 2024, five state governments announced a return to OPS, driven almost entirely by electoral calculations.

The fiscal stakes are enormous. If every state and the centre were to revert to OPS, the combined pension liability could exceed Rs 10 lakh crore annually within 15 years. That is roughly equal to what India spends on its entire defence establishment, health sector, and education system combined. This is not a hypothetical number -- it is the trajectory that the Reserve Bank of India has flagged in its State Finances reports.

The central government's current NPS contribution stands at approximately Rs 76,000 crore per year. This is a known, budgeted, predictable expense. The government knows exactly what it will pay next year because the formula is fixed: 14% of the basic pay and DA of all NPS-enrolled employees. This predictability is NPS's greatest fiscal advantage.

Restoring OPS would blow this equation apart. The 6th and 7th Pay Commissions have dramatically increased basic pay scales. An employee retiring at the level of Section Officer today draws a basic pay of roughly Rs 1.1-1.3 lakh per month. Under OPS, their pension would be Rs 55,000-65,000 per month, indexed to future DA hikes. Multiply this across lakhs of retiring employees over the next 20 years, and the numbers become staggering.

Conservative estimates put the annual OPS bill at Rs 4.5-5 lakh crore by 2030 if fully restored at the central level. For context, India's total defence budget in 2026-27 is about Rs 6.8 lakh crore. Pension payments would approach defence spending in scale -- except that pensions cannot be deferred, restructured, or cut without political and legal consequences.

The pension problem at the state level is, if anything, more acute than at the centre. Most Indian states already spend between 25% and 40% of their revenue receipts on salaries and pensions. In Himachal Pradesh, this ratio has at times exceeded 60%. When a state with limited tax revenue and heavy dependence on central transfers commits to an open-ended pension liability, the arithmetic simply does not work.

The RBI's report on state finances has repeatedly warned that OPS restoration poses a serious risk to fiscal sustainability. The reason is structural: under OPS, pension obligations grow exponentially. Each Pay Commission revision increases the last drawn salary, which raises pension payouts. DA indexation compounds this further. And because life expectancy has increased from about 55 years at independence to 72 years today, the average pension payout period has nearly doubled.

Consider Rajasthan, one of the first states to announce OPS restoration. The state's own pension bill (for pre-2004 retirees) consumed Rs 22,400 crore in 2023-24 -- about 15% of total revenue expenditure. Adding post-2004 employees under OPS would effectively double this within a decade. For a state already running a fiscal deficit of 3.3% of GSDP, this is a ticking fiscal bomb.

The crowding-out effect deserves attention. Every rupee locked into pension payments is a rupee unavailable for roads, schools, hospitals, and irrigation. States with heavy pension burdens consistently underperform on capital expenditure. A 2024 NIPFP study found that the five states with the highest pension-to-revenue ratios also had the lowest capital expenditure as a share of GSDP. The correlation is not accidental.

The pension landscape in India is unlikely to settle into a single model any time soon. The central government has signalled clearly through UPS that it will not restore OPS. But individual states retain the authority to design their own pension policies for state employees, and political pressure will keep the issue alive through every election cycle.

For employees currently under NPS, UPS offers a meaningful improvement -- an assured pension floor, inflation indexation, and a higher government contribution. However, some employee unions have dismissed UPS as insufficient, arguing that anything short of full OPS restoration is unacceptable. The legal dimension also matters: several cases challenging the constitutional validity of NPS (and its replacement of OPS) are pending before various High Courts.

From a budget-watcher's perspective, the most important number to track is each state's pension-to-GSDP ratio. States where this ratio exceeds 2.5% are already in difficult territory. If it crosses 4%, capital expenditure will inevitably be compressed, and the state's long-term growth trajectory will suffer. The 16th Finance Commission, expected to submit its report in 2025-26, will likely weigh in on this issue with recommendations that could reshape the pension framework for the next five years.