The Free-Floating Rupee Myth, Why Market Forces Alone Cannot Determine India’s Exchange Rate

The Free-Floating Rupee Myth, Why Market Forces Alone Cannot Determine India’s Exchange Rate

The Indian rupee fell sharply from 88.49 per dollar on November 19, 2025, to 95.21 in late March 2026, before recovering to 94.3 in April. The sharp slide has sparked the usual debate, with some arguing that the Reserve Bank of India (RBI) should leave the rupee entirely to market forces. In theory, a free float is appealing, but it does not work in practice. The textbook case for a free float rests on three premises: price adjusts to clear the market through a self-correcting mechanism (a cheaper rupee should promote exports and discourage imports); resources get allocated efficiently; and it prevents moral hazard (the belief among traders and importers that the central bank will always step in). These do not work when capital flows dominate trade. For a country with India’s capital flow profile—high dependence on imported oil, shallow onshore forex markets, and volatile portfolio flows—a free float is not merely risky; it is dangerous. The recent West Asia war and the resulting rupee volatility have demonstrated why the RBI must continue to manage the exchange rate, even as it works to deepen markets and internationalise the currency.

The Theoretical Case for a Free Float: Why It Fails in Practice

In many countries, leaving exchange rates entirely to market forces has caused too much instability. Some prominent cases where a free float proved costly include Brazil in 1999 following its crawling peg collapse, Argentina in 2001–02 after abandoning its currency board-like arrangement, and Russia in 2014–15, when sanctions and the oil-price crash drove a sharp rouble depreciation. These episodes share a common pattern: capital flows overwhelmed trade flows, markets overshot fundamentals, and expectations became self-fulfilling.

That is why most central banks, even in advanced economies, do not leave the exchange rate free. The gap between theory and practice is reflected in the International Monetary Fund’s classification: Only 16 per cent of its member countries were “free floating” as of 2023. Most use managed floats, pegs, or bands. The theoretical case for a free float assumes that exchange rates are determined by trade flows—exports and imports. In reality, for most countries, capital flows (foreign investment, portfolio flows, banking flows) are much larger and more volatile than trade flows. When capital flows dominate, the exchange rate can deviate from its fundamental value for extended periods, causing economic damage.

Why India Cannot Afford a Free Float

India’s current account deficit (CAD) is modest, but portfolio flows and oil price volatility mean the rupee is driven more by sentiment and positioning than by exports and imports. Leaving the exchange rate to market forces would be too risky for India for several reasons.

First, high dependence on imported oil and commodities. India imports nearly 90 per cent of its crude oil requirements. A sharp rupee depreciation passes through quickly to inflation: a 10 per cent depreciation adds about 70 basis points (0.7 percentage points) to inflation. In a country with a large poor population, high inflation is not just an economic problem; it is a political and social one. The government cannot afford to let the rupee slide unchecked.

Second, onshore forex markets lack depth and liquidity. The daily turnover in onshore USD/INR markets is a fraction of the offshore non-deliverable forward (NDF) market, which has a daily turnover of $100-150billion.Withforeigninstitutionalinvestorsabletopullbillionsinaweek—$3.4 billion a week on average over the last eight weeks—the rate cannot be left entirely to the market. The rupee can overshoot fundamentals. When foreign investors panic, they sell, the rupee falls, which triggers more selling, and a virtuous cycle becomes a vicious one.

Third, the biggest risk is self-fulfilling expectations. Amid rising commodity prices and large capital outflows, importers rush to cover (buy dollars to pay for future imports), exporters delay repatriation (hold on to dollars hoping for a better rate), and speculators short the rupee expecting a further fall. The expectation of weakness creates further weakness. This is not speculative fiction; it is what happened in March 2026, when the rupee weakened past 95 against the dollar.

The Recent Episode: How War Triggered Rupee Volatility

After West Asia tensions flared in late February 2026, the dollar index rose on safe-haven demand. Global investors fled emerging markets and rushed into US dollars. Speculation and short-positioning exerted pressure on the rupee through March, with the currency weakening past 95 against the dollar by March 30. Volatility increased, with price moves disconnected from underlying trade and investment flows. A falling rupee was not a signal that Indian exports had become more competitive; it was a signal that global investors were panicking. In such conditions, a free float would not discover a fair price. It would discover a panic price.

In late March, the RBI took action. It tightened banks’ net open position limits (restricting how much currency risk banks can take) and barred them from offering rupee non-deliverable forward (NDF) contracts to clients to curb speculation and restore orderly market conditions. These were temporary measures, designed to calm the market. They worked: the rupee recovered to 94.3 in April. But the underlying vulnerabilities remain.

Structural Issues: The Offshore NDF Market and Onshore Shallowness

While the exchange rate needs to be managed, it is equally important to address some structural issues. The onshore hedging market needs to be deepened. The daily turnover in USD/INR NDF of about $100-150 billion is much larger than that in the onshore forward market. The NDF market exists because India restricts full capital account convertibility, but global investors still need to hedge rupee exposure. When onshore access is limited or expensive, risk is then hedged offshore. A deeper onshore rupee derivatives market with easy non-resident access will help narrow the pricing gap between the two markets.

The NDF market is not illegal; it is a natural response to capital controls. Indian regulations restrict non-residents from accessing onshore derivatives markets freely. So they go offshore, where they can trade rupee derivatives without restriction. The problem is that the offshore market is larger, more liquid, and less regulated. It can drive the onshore market, rather than the other way around. When the offshore NDF price falls, onshore traders adjust their positions, amplifying the move.

The RBI needs to explore how to simplify genuine hedge verification while keeping speculation in check. This is a delicate balance. Too much regulation drives activity offshore; too little regulation invites speculation. The solution is not to ban offshore trading—that is impossible—but to make onshore trading more attractive: lower transaction costs, easier access, more transparent rules.

Rethinking FDI vs. FPI: Stable Flows over Volatile Flows

We need to revisit the foreign direct investment (FDI) policy to promote stable FDI over volatile foreign portfolio investment (FPI) for two reasons.

First, oil prices have surged recently, driven by the war in West Asia and damage to key energy infrastructure. Even if the war ends and prices decline, they are unlikely to fall to pre-war levels. Given India’s heavy oil import dependence, this will keep straining the current account deficit. India will need foreign capital to finance that deficit. FDI is more stable than FPI. FDI comes for the long term; it is invested in factories, infrastructure, and businesses. FPI can leave overnight.

Second, portfolio flows, which were stable for long, have become volatile in recent years. These flows depend on global risk-return assessments and interest rate differentials, not just domestic fundamentals. India cannot control US interest rates. It cannot control global risk appetite. It cannot control the panics that drive investors to sell everything and run to the dollar. Recent outflows reflect this. Given this experience, India should not count on volatile portfolio flows when it comes to financing a structural CAD in our calculus.

The policy implication is clear: India should tilt its foreign investment policy towards FDI and away from FPI. This means simplifying FDI rules, reducing restrictions, and providing incentives for long-term investment. It also means being less enthusiastic about FPI inflows, which can reverse as quickly as they arrive.

Internationalising the Rupee: A Long-Term Solution

Fourth, efforts need to be intensified to internationalise the rupee, which will help reduce such offshore pressures. If the rupee is widely held and traded internationally, then demand for dollars to settle international transactions will fall. Indian exporters can invoice in rupees; foreign importers can hold rupee balances; central banks can hold rupees as reserves. This is a long-term project. It requires trade agreements that encourage rupee settlement, a deep and liquid bond market that foreigners can invest in, and macroeconomic stability that builds confidence.

The RBI has made some progress: it has allowed rupee settlement for trade with Russia, Sri Lanka, and several other countries. But the volume is still small. The share of India’s trade invoiced in rupees is negligible. The rupee is not yet a major international currency. That will take years, if not decades. In the meantime, India must manage the exchange rate.

Conclusion: Managed Float, Not Free Float

In sum, a free float is good in theory. For a country with India’s capital flow profile, it cannot be practised. Markets tend to overshoot, and expectations become self-fulfilling—a phenomenon amplified by offshore NDFs. While the rupee needs to be managed, we need to strengthen market microstructure to make it deeper and more liquid. Deeper onshore derivatives and easier access to onshore hedging will help contain volatility and reduce NDF arbitrage and the need for intervention.

The recent episode is a reminder that the exchange rate is not just a price; it is a policy variable. A falling rupee hurts the poor through inflation, hurts companies through higher input costs, and hurts the government through higher debt servicing costs. The RBI’s intervention in March was not a sign of weakness; it was a sign of wisdom. It prevented a panic from becoming a crisis. The rupee should be allowed to find its level, but not at the cost of instability. The managed float is imperfect, but it is the least bad option. For India, a free float is a free fall. The RBI must continue to manage the rupee.

Q&A: India’s Exchange Rate Policy and the Free-Float Debate

Q1: What is the textbook case for a free-floating exchange rate, and why does the article argue it fails in practice for India?

A1: The textbook case rests on three premises: (1) price adjusts to clear the market (a cheaper rupee promotes exports and discourages imports), (2) resources get allocated efficiently, and (3) it prevents moral hazard (traders and importers knowing the central bank will step in). However, these do not work when capital flows dominate trade. India’s capital flows (foreign investment, portfolio flows) are much larger and more volatile than trade flows. The IMF classifies only 16 per cent of member countries as “free floating” as of 2023. Examples where free float proved costly include Brazil (1999), Argentina (2001-02), and Russia (2014-15). The article concludes: “For a country with India’s capital flow profile, it cannot be practised.”

Q2: Why is India particularly vulnerable to sharp rupee depreciation?

A2: The article identifies three reasons:

1. High oil import dependence: India imports nearly 90 per cent of its crude oil requirements. A 10 per cent rupee depreciation adds about 70 basis points (0.7 percentage points) to inflation, passing through quickly to consumers.

2. Shallow onshore forex markets: Foreign institutional investors can pull billions in a week ($3.4billionweeklyaverageovereightweeks).TheoffshoreNDFmarket(dailyturnover$100-150 billion) is much larger than the onshore forward market, and offshore trading can drive onshore prices.

3. Self-fulfilling expectations: Importers rush to cover (buy dollars), exporters delay repatriation (hold dollars), and speculators short the rupee expecting further falls—creating a vicious cycle. In March 2026, the rupee weakened past 95 against the dollar with “price moves disconnected from underlying trade and investment flows.”

Q3: What actions did the RBI take in late March 2026 to curb rupee volatility?

A3: In late March 2026, the RBI took two key actions:

• Tightened banks’ net open position limits: Restricting how much currency risk banks can take.

• Barred banks from offering rupee non-deliverable forward (NDF) contracts to clients: To curb speculation and restore orderly market conditions.
  These were temporary measures designed to “calm the market,” and they worked—the rupee recovered to 94.3 in April. However, the article notes that “underlying vulnerabilities remain.”

Q4: What are the structural issues the article identifies, and what reforms does it recommend?

A4: The article identifies two structural issues and recommends four reforms:

• Issue 1: Offshore NDF market ($100-150 billion daily turnover) is larger than onshore forward market because India restricts full capital account convertibility, forcing global investors to hedge offshore.

• Issue 2: Onshore hedging market is shallow, and the rupee is not yet internationalised.
  Reforms recommended:

1. Deepen onshore derivatives market with easy non-resident access to narrow the pricing gap between onshore and offshore markets.

2. Simplify genuine hedge verification while keeping speculation in check.

3. Revisit FDI policy to promote stable foreign direct investment over volatile foreign portfolio investment (FPI), especially given oil prices unlikely to fall to pre-war levels and portfolio flows becoming volatile.

4. Intensify efforts to internationalise the rupee (allow rupee settlement for trade, develop a deep and liquid bond market for foreign investors, build macroeconomic stability) to reduce offshore pressures.

Q5: What is the article’s conclusion on whether India should adopt a free-floating rupee?

A5: The article concludes that “a free float is good in theory” but for a country with India’s capital flow profile, “it cannot be practised.” Markets tend to overshoot, expectations become self-fulfilling (amplified by offshore NDFs), and a falling rupee hurts the poor through inflation, companies through higher input costs, and the government through higher debt servicing costs. The RBI’s intervention in March “was not a sign of weakness; it was a sign of wisdom.” The article argues for a managed float, not free float. While the rupee needs to be managed, India must also “strengthen market microstructure to make it deeper and more liquid.” The author concludes: “For India, a free float is a free fall. The RBI must continue to manage the rupee.”