Why it is time for the rupee to become fully convertible…

(image by freepik)

India is no longer a tentative emerging market on the periphery of global finance. It’s the world’s fastest-growing large economy, a top-five destination for capital, and increasingly a rule-setter in payments and digital public infrastructure. Yet one piece of the monetary architecture still belongs to an earlier era: the rupee remains only partly convertible. That choice made sense when balance-of-payments crises were a real risk. Today, however, the cost of holding back may exceed the protection it offers.

This post explains—plainly and in depth—what “convertibility” actually means; how the dollar became the world’s organizing currency and what that has done for U.S. borrowing and spending; where India stands now; what a move to full convertibility would unlock (and what it would demand in return); and a practical, phased roadmap to get there.

Convertibility, demystified

Current-account convertibility means residents and firms can freely convert domestic currency into foreign currency (and back) for trade in goods and services, remittances, interest/dividends, travel, education, etc. India made this leap in 1994 when it accepted IMF Article VIII, committing to remove restrictions on current-account payments.

Capital-account convertibility is broader: it allows cross-border purchases of assets (equities, bonds, real estate, businesses) and the free movement of capital in and out. India is partly convertible on the capital account: many flows are allowed but under rules, limits and reporting. For example, individuals face an annual outward limit under the Liberalised Remittance Scheme (LRS) (USD 250,000 per resident per financial year), and capital account transactions continue to be governed by FEMA regulations and RBI directions.

India’s regime today is thus a hybrid: fully convertible on the current account; managed on the capital account with calibrated channels for foreign portfolio investment, external commercial borrowings (ECBs), outward direct investment (ODI), masala bonds, and more. That balance has served India well. But as India moves from capital-scarce to capital-attractive, the question flips: how much friction is now costing growth, market depth and the rupee’s international role?

The global currency hierarchy—why one currency tends to dominate

The world doesn’t use dozens of currencies equally. Network effects—liquidity begets liquidity—create a “winner-takes-most” pattern. The U.S. dollar sits at the core across four pillars:

1. Reserves: About 58% of disclosed global official reserves are held in dollars (2024). The dollar’s share remains far above the euro (~20%), yen (~6%), and pound (~5%); the renminbi is low single digits.
2. Trade invoicing: A large share of world trade—often even between third countries with no U.S. party—is priced in dollars. This “dominant currency paradigm” is now a core idea in international macroeconomics: prices and quantities in global trade co-move far more with the dollar than with bilateral exchange rates.
3. Payments: SWIFT data consistently shows the dollar as the top or co-top payments currency by value. In late 2024, the dollar’s global payments share hit multi-year highs near ~49%.
4. Finance: Deep, transparent U.S. markets, abundant Treasury collateral, and the ubiquity of dollar funding keep the dollar at the center of global banking and capital markets.

This dominance is sticky. The more firms invoice and hedge in dollars, the more banks and asset managers hold dollar assets; the more they hold, the more liquid and cheap dollar funding becomes. The loop reinforces itself.

Economists have long argued that the dollar’s special status confers two big advantages to the United States:

1) Cheaper and more stable financing for the government

Global investors are willing to accept a “convenience yield”—a safety/liquidity discount—on U.S. Treasuries. Multiple studies measure this as a persistent gap between Treasury yields and comparable currency-hedged foreign bonds; estimates put the convenience yield for foreign holders at around 2 percentage points on average over long samples. That willingness to pay for safety lowers the U.S. government’s effective cost of capital.

2) A structural return advantage on external balance sheets

Classic work by Gourinchas & Rey shows the U.S. consistently earns higher returns on its foreign assets than foreigners earn on U.S. liabilities—a phenomenon they dubbed the exorbitant privilege. This helps the U.S. run larger current-account deficits with fewer sustainability concerns because valuation gains and return premia partly offset the arithmetic of borrowing. Recent Fed research confirms this excess-return pattern endures, albeit with cyclical variation.

Why this matters for fiscal policy

If investors the world over must hold dollar safe assets to transact, collateralize, and hedge, the marginal buyer of Treasuries is often price-insensitive, especially in stress. That reduces term premia and cushions shocks, indirectly granting Washington more room to borrow and spend at lower rates than peers—an advantage that compounds over time. The Fed’s own overview of the dollar’s international role underscores these mechanics across reserves, invoicing, funding markets and policy transmission.

Where India stands now

India has quietly laid important groundwork:

• Current-account convertibility is done (1994 Article VIII acceptance).

• Bond market access is widening: J.P. Morgan began including Indian government bonds in its flagship GBI-EM index in June 2024, with an eventual weight of up to ~10%—a structural inflow channel that deepens the rupee curve and broadens the investor base.
• Rupee settlement for trade: The RBI created a mechanism (Special Vostro Accounts) in 2022 for international trade in rupees, reducing dollar intermediation for willing counterparties.
• Onshore-offshore integration: Since 2020, Indian banks have been permitted to participate in the offshore NDF market in INR, helping align offshore pricing with onshore markets and reducing volatility.
• Macro buffers: India’s FX reserves are among the world’s largest, typically covering many months of imports and substantial external debt service—important insurance during any liberalization. (Recent RBI data places reserves around the high-$600 bn mark, fluctuating week to week.)

These steps are not full convertibility—but they nudge India’s ecosystem toward a more open, deeper, and more international rupee.

What full rupee convertibility would actually change

Think of full capital-account convertibility as removing the remaining frictions for prices, products and participants in Indian and rupee markets. The key channels:

1) Cheaper capital for the sovereign and better transmission

• A fully open capital account plus index inclusion and a well-functioning derivatives complex can compress India’s sovereign risk premium over time. As global investors treat rupee bonds more like a true reserve-eligible asset class, the demand curve steepens and term premia can fall. In the U.S. case, the convenience yield is large because Treasuries anchor the global system; while the rupee is unlikely to replicate that, directionally more convertibility tends to lower borrowing costs and smooth the curve—especially if accompanied by credible fiscal anchors. (This is the logic underpinning the U.S. convenience yield literature.)

2) Deeper, more liquid markets

• Full convertibility widens the buyer/seller set across bonds, equities, credit, and derivatives. Tighter bid-ask spreads and richer hedging instruments reduce the economy-wide cost of capital and improve risk-sharing. The onshore-offshore wedge in FX and rates narrows structurally (beyond the 2020 NDF step).

3) A true INR funding and invoicing ecosystem

• With open capital flows and simple documentation, Indian firms could issue more long-tenor INR debt to global investors, including natural buyers (pension funds/insurers) that prefer local-currency EM debt. Trade partners would find it easier to invoice and settle in rupees, supported by deep INR-hedging markets and offshore custody infrastructure. The RBI’s rupee-settlement framework is an early scaffold; full convertibility would make it mainstream.

4) A wider “privilege”—in miniature

• No currency will displace the dollar soon, but a more international rupee can still capture a mini convenience yield: heightened demand for safe, liquid G-sec collateral in Asia time zones; a larger foreign-official and reserve-manager bid as index weights rise; and thinner crisis-time fire-sale discounts. Over years, that mix can trim the government’s interest bill, freeing space for productive public investment.

5) Household and SME benefits

• Cheaper hedging and more stable long-term rates matter for mortgages, SME credit, and infrastructure finance. Reduced cross-border friction lets Indian savers diversify abroad more easily (and bring gains back) while lowering the cost for innovators to raise from global pools.

What could go wrong—and how to design it out

Sudden stops and surges. The risk in opening the capital account is that flows can swing violently. The answer is not to stay closed, but to design the margins:

• Phased opening of the most flight-prone channels last (e.g., speculative short-term debt) and the most stability-enhancing channels first (long-only funds, official sector, long-tenor bonds).
• Hedging depth before freedom: expand onshore FX and rates derivatives accessibility so everyone—banks, corporates, PFs—can lay off risk cheaply.
• Guardrails, not gates: rules-based macroprudential tools (loan-to-value limits, FX mismatches caps, systemic risk surcharges) and temporary, pre-announced CFMs for disorderly conditions.

Exchange-rate volatility. Opening can mean a freer rupee. The antidote is not a peg; it is two-way liquidity. India’s 2020 step allowing banks into the offshore NDF market already helped align offshore and onshore pricing and reduce gaps that speculators can exploit. Going further—deeper onshore derivatives, broader participant access—will make the rupee less fragile, not more.

A final word.

Full convertibility is sometimes presented as a leap of faith or a binary switch. It is neither. It is a design problem—of sequencing reforms, finishing market plumbing, and hard-wiring restraint so that freedom does not become fragility. The U.S. example shows what a dominant currency can do for a sovereign’s borrowing power; India does not need America’s hegemony to harvest its own version of that dividend. It needs credibility, depth, and a currency others can hold, hedge, and pledge without friction.

Make G-secs irresistibly safe and useful. Keep inflation believable. Codify fiscal math. Deepen derivatives and repo. Standardize rupee settlement. Then, open the gates—confidently, with transparent safeguards.

If India does that, the rupee’s convertibility will feel less like an audacious bet and more like common sense: the natural monetary language of a 21st-century economy that finally lets its currency do, abroad, what it already does at home.

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