Reserve Bank of India (RBI) Deputy Governor Shirish Chandra Murmu on 13 August flagged a striking paradox at the heart of India's payments landscape: even as digital transactions have surged over the past decade, the volume of cash in circulation has continued to climb, particularly among rural households, low-income groups, older populations, and small businesses.

The Cash-Digital Paradox

Speaking at an event organised by Bank Indonesia in Jakarta, Murmu noted that currency in circulation is growing at double-digit rates even as cash's share of individual transactions shrinks. 'That combination makes future demand harder to predict, which complicates our planning for production and distribution capacity,' he said. The observation underscores that digital adoption and cash demand are not a zero-sum equation — at least not yet in India's diverse economy.

The Scale of India's Cash Economy

The numbers illustrate the sheer magnitude of the RBI's cash management task. The central bank currently has 176 billion banknotes in circulation across the country. Between 28 and 30 billion banknotes are produced annually across six denominations, while roughly 21 billion pieces are disposed of each year. For context, approximately 56 billion US dollar bills and 30 billion euro banknotes were in global circulation at the end of last year. Murmu acknowledged that India's higher count is partly a function of its denomination mix, which is weighted toward lower-value notes. 'Even so, the volume gives you a sense of the scale of the logistics we manage every day,' he said.

Why Cash Still Matters

Murmu framed the continued relevance of cash not merely as an operational challenge but as a matter of monetary sovereignty. 'Cash remains a significant mode of payment in the Indian economy, and preserving trust in it — through clean notes, secure logistics, and a currency ecosystem people can rely on — is central to preserving monetary sovereignty itself,' he remarked. He added that this is a goal shared by all central banks, regardless of where their economies land on the cash-versus-digital spectrum. Notably, the persistence of cash demand in semi-urban and rural India reflects structural factors: limited smartphone penetration, connectivity gaps, and a preference for tangible currency among older demographics and informal traders.

Innovation in Currency Management

To address durability and sustainability concerns, the RBI is exploring surface coatings on banknote substrates and the introduction of polymer notes for lower denominations. The regulator is also working to reduce the carbon footprint of the cash cycle by optimising its distribution network and improving how it handles banknote briquettes at the disposal stage. These steps signal a longer-term rethink of how India's cash infrastructure is built and maintained, even as digital rails continue to expand in parallel.

What This Means Going Forward

The RBI's candid acknowledgement that cash demand is difficult to forecast has direct implications for monetary planning, logistics investment, and financial inclusion policy. As India's payments ecosystem grows more layered — with UPI, CBDC pilots, and legacy cash coexisting — the central bank's challenge is not choosing between cash and digital, but managing both at scale simultaneously. The next phase of currency policy will likely hinge on how well the RBI can model demand in a bifurcated economy.