Reading Keynes in Buenos Aires
This week I participated (virtually) in a conference in Colombia organized by the finance ministry, alongside a remarkable group of participants, including Rafael Correa, Isabella Weber, and Daniela Gabor. The focus of the discussion was the ongoing dispute between the government of Gustavo Petro and the Colombian central bank over the persistence of relatively high interest rates, and the broader question of central bank independence.
None of this, of course, is new. Variants of this conflict have played out repeatedly, including in the United States, where Donald Trump has openly criticized the Federal Reserve for maintaining interest rates he considers too high, and has clashed with Jerome Powell, as I have discussed here. But the Latin American context adds an important layer that is often missing from these debates.
The first point worth stressing is historical. The notion of an independent central bank is a relatively recent invention. Central banks have existed for centuries, but their functions have evolved significantly. Early central banks, even before institutions like the Bank of England (see here and here), were deeply intertwined with the fiscal needs of the state. They acted as fiscal agents, helping to finance public debt, often at levels that would alarm today’s orthodox commentators. In Britain, public debt during the Industrial Revolution exceeded 100 percent of GDP, with significant portions effectively absorbed by the central bank.
In this context, I suggested an analogy with Ha-Joon Chang’s argument about kicking away the ladder. Chang shows that today’s advanced economies relied heavily on protectionism and industrial policy during their own development, only to later promote free trade as the universal path, effectively denying developing countries the same tools. Something similar can be said about central banking. Historically, advanced economies used their central banks as instruments of development and as fiscal agents of the state, helping to finance large public debts and support economic transformation. Once they achieved development, they moved toward promoting central bank independence as a general principle, thereby limiting the ability of developing countries to use similar financial tools. In that sense, one could say that they also kicked away the financial ladder.
The idea that central banks should operate according to fixed rules, insulated from political pressures, is more closely associated with the gold standard era and the late nineteenth century. Even then, this rule-based framework reflected specific historical conditions rather than a timeless principle. And, as is well known, it broke down in the interwar period, when governments, faced with high unemployment, and the crisis of British hegemony, abandoned orthodoxy in favor of more active coordination between central banks and treasuries.
The US experience is illustrative. Under Marriner Eccles during the New Deal and World War II, the Federal Reserve worked closely with the Treasury, including maintaining low interest rates on government debt. It was only with the Treasury–Fed Accord of 1951 that the modern notion of central bank independence took shape. Even then, the separation was never as clean as the textbooks suggest.
This is because, at a more fundamental level, the central bank and the Treasury cannot be meaningfully separated. The central bank still acts as the fiscal agent of the state. Government spending creates money, whether through keystrokes in digital accounts, as emphasized recently by Modern Money Theory authors, or more traditional mechanisms. The idea that governments can run out of money (domestic issued money) in a technical sense is a useful fiction, one that obscures the real constraints, which are not financial but material. As John Maynard Keynes famously suggested, if it can be done, financing can be arranged.
This brings us to the present conjuncture. The recent inflationary episode in the United States was not primarily the result of excessive demand, but of supply-side disruptions, pandemic-related bottlenecks and energy price shocks (I wrote many posts on that; see this one). As these factors subsided, inflation fell. The Federal Reserve’s aggressive interest rate hikes were, at best, incidental to this process, and at worst risked pushing the economy into recession. What prevented that outcome was not monetary policy, but fiscal expansion, particularly the initial stimulus enacted by the Biden administration, the one that Larry Summers referred to as the worst economic mistake of the last 40 years (it's worth remembering).
If this is the case at the center, the implications for the periphery are even more significant. In Latin central bank independence is even more recent than in the US. It results from institutional arrangements that have evolved particularly in the wake of the debt crises of the 1980s and the
imposition of the Washington Consensus, but that have been fully
accepted by left of center governments in the region (note that most central banks in the region were created to deal with development issues in the aftermath of the 1930s crisis; this is represented by Prebisch, reading Keynes in Buenos Aires, in the figure above*).
The debate in Colombia mirrors similar tensions in Brazil, where Luiz Inácio Lula da Silva has criticized high interest rates maintained by the central bank under the previous chairman, appointed by Jair Bolsonaro, Roberto Campos Neto. Interest rates, which remain high with the current president of the Brazilian Central Bank, Gabriel Galípolo, have not precluded growth, which depended on fiscal expansion and higher wages. True, Brazil has returned to growth, but it has done so more slowly than it could have, but not as a result of the interest rate policy. Instead, the slower pace of growth results from the self-imposed fiscal limits (see this by Haluska, Serrano and Summa).
Here is where the Colombia and Latin America, more generally, diverge from the US case. In the periphery, central banks do not operate in a vacuum. Their policies are constrained by the global financial environment, particularly by the stance of US monetary policy. Higher interest rates in the United States put pressure on developing countries to maintain relatively high rates of their own, in order to stabilize nominal exchange rates and avoid capital outflows and depreciation. Currency depreciation is not only inflationary but also contractionary, making macroeconomic management far more difficult.**
This is why the question of central bank independence, while important, is ultimately secondary to the issue of fiscal rules. Even countries without severe external constraints, such as Colombia or Brazil, face self-imposed limits on their ability to use fiscal policy to expand demand and promote growth. These constraints are not natural. The challenge, then, is not simply to debate whether central banks should be independent or not and from whom (certainly from financial markets). It is to rethink the broader framework within which monetary and fiscal policy operate, particularly in the periphery.
The discussion in Colombia, therefore, is not just about the appropriate level of interest rates or the degree of central bank independence. It is about the broader question of how much room governments have to use fiscal policy as a tool for development.
* Yes, the figure is AI; and the 9 of July monument, the obelisk, which was completed in 1936, was designed by Raúl's brother, Alberto Prebisch.
** Hélène Rey refers to this as the dilemma (instead of trilemma), since countries, with fixed or flexible (and, I guess, anything in between) exchange rate regimes, loose monetary policy autonomy with greater capital mobility.











