What Does It Cost to Have a Credible Central Bank in the 21st Century?
A stray remark by an Indian Deputy Governor opens a question every middle-income economy is now circling: when do you graduate from inflation forgiveness to inflation discipline, and what is the price of that promotion?
The most consequential macro signals of our era do not arrive as headlines. They arrive as remarks at panels, as footnotes in speeches, as a sentence dropped into a Q&A. This week, a Deputy Governor of the Reserve Bank of India said something that ought to be read closely in every emerging economy whose currency carries a discount.
If growth holds and inflation settles, she said, India should consider lowering its headline inflation target and narrowing the tolerance band around it.
The remark, made six weeks after the Indian government formally retained the existing 4 per cent target with a 2-to-6 per cent band for the next five years, is not a policy announcement. It is something more interesting. It is a public bid for a different kind of central-bank credibility — and the conversation it opens is not Indian. It is global.
The two-stage history of inflation targeting
The world's monetary institutions have moved through three stages over four decades, and most countries are still negotiating the second.
Stage one was the no-anchor era — the high-inflation 1970s and 1980s in which most economies had no formal numeric target, and price-level expectations drifted upward as a function of political fashion and shock-of-the-week. The price was paid by ordinary citizens whose savings eroded in real terms each year and whose borrowing costs were set by lenders who could not believe the central bank.
Stage two is the wide-band inflation-targeting era. New Zealand pioneered it in 1990 with a 0-2 per cent target. Canada followed. The United Kingdom adopted it in 1992. The euro area, the United States, and most emerging economies eventually arrived. The wide band — typically 2 to 4 percentage points around a midpoint — was the price of admission for a generation of central banks that could not yet credibly defend a tight number. India joined this stage formally in 2016, with a 4 per cent midpoint and a 2-to-6 per cent corridor.
Stage three is what some advanced central banks have been quietly doing for the last decade — narrowing the corridor. New Zealand's current band is 1-3 per cent. The United Kingdom's target is 2 per cent with a 1-percentage-point informal symmetric expectation. The European Central Bank has shifted from "below but close to 2 per cent" to a symmetric 2 per cent target. Each of those moves is a credibility upgrade that lowers borrowing costs across the curve and tightens the connection between announced policy and realised inflation expectations.
The Indian Deputy Governor's remark is, in plain language, a public floating of the question: when does an emerging economy that has done the wide-band work earn the right to graduate?
Why this is not just an Indian conversation
There are at least fifteen middle-income economies for whom this question is now active.
Brazil runs an inflation-targeting regime with a 3 per cent target and a generous tolerance band. Indonesia operates a 2.5 per cent target with a 1-percentage-point band on either side. Mexico has held a 3 per cent target since 2003 and is debating whether the band should narrow as inflation expectations consolidate. South Africa is running a 3-6 per cent target range that many economists view as legacy-wide for an economy with its current inflation track record. Turkey is mid-recovery from a regime crisis but will face the same question once stability is restored.
Each of these countries has a population that pays a credibility tax. Borrowers pay the tax through higher mortgage rates than their inflation print warrants. Pensioners pay it through risk premia embedded in long-dated government debt. Exporters pay it through a currency that the world prices conservatively in case the central bank loses discipline.
The arithmetic of graduation is not abstract. A 100-basis-point reduction in the long-end of the yield curve, sustained for a decade, is worth more in cumulative welfare gain to a developing economy than several years of incremental fiscal stimulus. Central-bank credibility is, in this sense, one of the largest pieces of free money any government can hand to its citizens — and it is also one of the hardest to earn.
The case against premature graduation
A regime shift to a tighter target is not free, and the case against deserves airtime.
The first counter is that a tighter target leaves less room for supply shocks. Emerging economies are structurally more exposed than advanced ones to imported inflation — energy, food commodities, electronics, fertilisers. A geopolitical shock can lift CPI by 100 to 200 basis points within a quarter. A 3 per cent target with a narrow band would be breached more often, and breaches erode credibility faster than misses against a wide target.
The second counter is that a tighter target constrains political space for growth experiments. Emerging economies are still building their productive capacity, and there will be periods when running the economy slightly hot is the right choice — to deepen labour-force formalisation, to push the female labour participation rate, to absorb a youth bulge. A regime that prioritises a 3 per cent print over those structural goals is making an implicit trade-off that may or may not be defensible.
The third counter is the equity question. Inflation hurts the poor more than the rich. But unemployment hurts the poor more, too. A central bank that becomes too proud of its print can also become too tolerant of a labour market that is not delivering. That tradeoff has been the central political-economy debate in the West for fifteen years and is now arriving in middle-income economies whose labour markets are more fragile, not less.
What graduation actually requires
The countries that have made the move have generally needed three things in place.
The first is a sustained track record — a decade or more of inflation prints clustering in the lower half of the existing band, with credible expectations that the trend continues. India's recent inflation track record meets this bar. Brazil's, after the post-2021 disinflation, is approaching it. Mexico's has been there for years.
The second is fiscal discipline. A central bank cannot defend a tight inflation target if its government is running large structural deficits that the bank will be expected to monetise in a crisis. The US Federal Reserve in the early 1980s discovered this; the Brazilian central bank rediscovered it in the 2010s. A graduation move requires a fiscal counterpart that is willing to operate inside the discipline.
The third is institutional independence. The central bank must be permitted to lose money in pursuit of the target, to raise rates against political fashion, and to publish forecasts that embarrass the elected government. Emerging-economy central banks have, on average, less of this freedom than their advanced-economy counterparts.
What an Indian Deputy Governor is really saying
Read carefully, the remark this week is not about India alone. It is about whether the inflation-targeting framework — the great institutional export of the 1990s — has a second act.
The first act was the spread of wide-band targeting from advanced to emerging economies, completed roughly between 1990 and 2020. The second act is the graduation of credible emerging-economy targeters into narrow-band regimes — which would, cumulatively, lower the long-run cost of capital across the developing world by a meaningful margin.
If India makes the move, even partially, it raises the bar for Brazil, Indonesia, Mexico, and South Africa to consider it. If the central banks of the largest emerging economies graduate together, the global emerging-market risk premium structurally tightens. That tightening is the real prize, and it is shared.
This is, in other words, a conversation about which countries are willing to underwrite their own currencies more aggressively, in exchange for the long-term welfare gain of a credibly anchored price level.
The Indian Deputy Governor floated the question. The interesting development of 2026 will be how many of her counterparts in other emerging economies pick it up.
The Global Federation covers global economic governance with the conviction that a credible central bank is one of the most equitable institutions a society can build.