The Fed is the Treasury’s Bank. Does it Matter for the Dollar’s Global Status?

By Elham Saeidinezhad

There is a consensus amongst the economist that the shadow banking system and the repurchase agreements (repos) have become the pinnacle of the dollar funding. In the repo market, access to liquidity depends on the firms’ idiosyncratic access to high-quality collateral, mainly U.S. Treasuries, as well as the systemic capacity to reuse collateral. Yet, the emergence of the repo market, which is considered an offshore credit system, and the expectations of higher inflation, have sparked debates about the demise of the dollar. The idea is that the repo market is becoming less attractive from an accounting and risk perspective for a small group of global banks, working as workhorses of the dollar funding network. The regulatory movement after the Great Financial Crisis (GFC), including leverage ratio requirements and liquidity buffers, depressed their ability to take counterparty risks, including that of the repo contracts. Instead, large banks are driven to reduce the costs of maintaining large balance sheets.

This note argues that the concerns about the future of the dollar might be excessive. The new monetary architecture does not structurally reduce the improtance of the U.S. government liabilities as the key to global funding. Instead, the traditional status of the dollar as the world’s reserve currency is replaced by the U.S. Treausies’ modern function as the world’s safest asset and the pinnacle of the repo market. Lastly, I put the interactions between the Fed’s roles as the manager of the government’s debt on the one hand and monetary policy architect on the other at the center of the analysis. Recognizing the interconnectedness could deepen our understanding of the Fed’s control over U.S. Treasuries.

As a result of the Bretton Woods Agreement, the dollar was officially crowned the world’s reserve currency. Instead of gold reserves, other countries accumulated reserves of dollars, the liability of the U.S. government. Till the mid-1980s, the dollar was at the top of the monetary hierarchy in both onshore and offshore financial systems. In the meantime, the dollar’s reserve status remained in an natural way. Outside the U.S., a few large global banks were supplying dollar funding to the rest of the world. This offshore bank-oriented system was called the Eurodollar market. In the U.S., the Federal Funds market, an interbank lending market, became the pinnacle of the onshore dollar funding system. The Fed conducted a simple monetary policy, detached from the capital market, and managed exclusively within the traditional banking system.

Ultimately, events never quite followed this smooth pattern, which in retrospect may not be regretted. The growth of shadow banking system meant that international investors reduced their reliance on bank loans in the Eurodollar markte. Instead, they turned to the repo market and the FX swaps market. In the U.S., the rise of the repo market implied that the U.S. monetary policy should slowly leak into capital market and directly targe the security dealers. At the heart of this structural break was the growing acceptance of the securities as collaterals.

Classical monetary economics proved to be handicapped in detecting this architectural development. According to theories, the supply of the dollar is determined in the market for the loanable funds where large banks act as financial intermediaries and stand between savers and borrowers. In the process, they set the price of the dollar funding. Regarding the global value of the dollar, as long as the Fed’s credibility in stabilizing prices exceeds its peers, and Treasury keeps its promises to pay, the global demand for the dollar will be significant. And the dollar will maintain its world reserve currency status. These models totally overlooked the role of market-makers, also called dealers, in providing short-term liquidity. However, the rise of the shadow banking system made such an abstraction a deadly flaw. In the new structure, the dealers became the de facto providers of the dollar funding.

Shadow banking created a system where the dealers in the money market funded the securities lending activities of the security dealers in the capital market. This switch from traditional banking to shadow banking unveiled an inherent duality in the nature of the Fed. The Fed is tasked to strike a balance between two rival roles: On the one hand, the Fed is the Treasury’s banker and partially manages U.S. debt. On the other hand, it is the bankers’ bank and designs monetary policy. After the financial crises of the 1980s and 1990s, the Fed tried to keep these roles divided as separate arms of macroeconomic policy. The idea was that the links between U.S. debt management and liquidity are weak, as the money market and capital market are not interconnected parts of the financial ecosystem. This weak link allowed for greater separation between monetary policy and national debt management.

The GFC shattered this judgment and exposed at least two features of shadow banking. First, in the new structure, the monetary condition is determined in the repo market rather than the banking system. The repo market is very large and the vast majority of which is backed by U.S. Treasuries. This market finances the financial market’s primary dealers’ large holdings of fixed-income securities. Second, in the new system, U.S. Treasuries replaced the dollar. The repo instruments are essentially short-term loans secured by liquid “collateral”. Although hedge funds and other types of institutional investors are important suppliers of collateral, the single most important issuer of high quality, liquid collateral, is the U.S. Treasury.

U.S. Treasury securities have become the new dollar. Hence, its velocity began to matter. The velocity of collateral, including U.S. Treasuries, is the ratio of the total pledged collateral received by the large banks (that is eligible to be reused), divided by the primary collateral (ie, sourced via reverse repos, securities borrowing, prime brokerage, and derivative margins). Before the GFC, the use (and reuse) of pledged collateral was comparable with the velocity of monetary aggregates like M2. The “reusability” of the collateral became instrumental to overcome the good collateral deficit.

After the GFC, the velocity of collateral shrank due to the Fed’s QE policies (involving purchases of bonds) and financial regulations that restricted good collateral availability. Nontheless, the availability of collateral surpassed the importance of private credit-creation in the traditional banking system. It also started to leak into the monetary policy decision-making process as the Fed started to consider the Treasury market condition when crafting its policies. At first glance, the Treasury market’s infiltration into monetary policy indicates a structural shift in central banking. First, the Treasury market is a component of the capital market, not the money market. Second, the conventional view of the Fed’s relationship with the Treasury governs that its responsibilities are mainly limited to managing the Treasury account at the Fed, running auctions, and acting as U.S. Treasuries registrar.

However, a thorough study of the traditional monetary policy would paint a different picture of the Fed and the U.S. Treasuries. Modern finance is only making the Fed’s role as a de-facto U.S. national debt manager explicit. The Fed’s primary monetary policy tool, the open market operation, is essentially monetizing national debt. Essentially, the tool enabled the Fed to monetize some portion of the national debt to control the quantity of bank reserves. The ability to control the level of bank reserves permitted the Fed to limit the level of bank intermediation and private credit creation. This allowed the Fed to focus on compromising between two objectives of price stability and full employment.

What is less understood is that the open market operation also helped the Fed’s two roles, Treasury’s bank and the bankers’ bank, to coexist privately. As private bankers’ bank, the Fed designs monetary policy to control the funding costs. As the Treasury’s bank, the Fed is implicitly responsible for U.S. debt management. The open market operation enabled the Fed to control money market rates while monetizing some portion of the national debt. The traditional monetary system simply helped the Fed to conceal its intentions as Treasury’s bank when designing monetary policy.

The point to emphasize is that the traditional central banking was only hiding the Fed’s dual intentions. The Fed could in theory monetize anything— from gold to scrap metals—but it has stuck largely to Treasury IOUs. One reason is that, unlike gold, there has never been any shortage of them. Also, they are highly liquid so the Fed can sell them with as much ease as it buys them. But, a third, and equally important reason is that in doing so, the Fed explicitly fulfilled its “role” as the manager of the U.S. national debt. All this correctly suggests that the Fed, despite its lofty position at the pinnacle of the financial system, has always been, and is, none other than one more type of financial intermediary between the government and the banking system.

The high-level relationship between the Treasury and the Fed is “inherent” and at the heart of monetary policy. Yet, nowhere along the central banking learning curve has been a meaningful examination of the right balances between the Fed’s two roles. The big assumption has been that these functions are distinctly separated from each other. This hypothesis held in the past when the banks stood between savers and borrowers as financial intermediaries. In this pre-shadow banking world, the money market and capital market were not interconnected.

Yet, the GFC revealed that more than 85 percent of the lending was based on securities lending and other credit products, including the repo. In repo, broker-dealers, hedge funds, and banks construct short-term transactions. They put up collateral—mostly U.S. Treasury securities —with an agreement to buy them back the next day or week for slightly more, and invest the proceeds in the interim. The design and conduct of the monetary policy intimately deepened on the availability and price of the U.S. Treasuries, issues at the heart of the U.S. national debt management.

The U.S. debt management and monetary policy reunion happened in the repo market. In a sense, repo is a “reserve-less currency system,” in the global funding supply chain. It is the antithesis of the reserve currency. In traditional reserve currency, central banks and major financial institutions hold a large amount of currency to use for international transactions. It is also ledger money which indicates that the repo transactions, including the securities lending of its, are computed digitally by the broker-dealers. The repo market is a credit-based system that is a reserve-less, currency-less form of ledger money.

In this world of securities lending, which has replaced traditional bank lending, the key instrument is not the dollar but the U.S. Treasury securities that are used as collateral. The U.S. national debt is being used to secure funding for private institutional investors. Sometimes lenders repledge them to other lenders and take out repo loans of their own. And the cycle goes on. Known as rehypothecation, these transfers used to be done once or twice for each posted asset but are now sometimes done six to eight times, each time creating a new money supply. This process is the de-facto modern money creation—and equally depends on the Fed’s role as Treasury’s bank and bankers’ bank.

Understanding how modern money creation works has implications for the dollar’s status in the international monetary system. Some might argue that the dollar is losing its status as the global reserve currency. They refer to the collateralized repo market and argue that this market allows international banks operating outside the supervision of the Fed to create US dollar currency. Hence, the repo, not the dollar, is the real reserve currency. Such statements overlook the repo market’s structural reliance on the U.S. Treasury securities and neglect the Fed’s role as the de-facto manager of these securities. Shadow banking merely replaced the dollar with the U.S. Treasuries as the world’s key to funding gate. In the meantime, it combined the Fed’s two roles that used to be separate. Indeed, the shadow banking system has increased the importance of U.S. institutions.

The rising dominance of the repo market in the global funding supply chain, and the decline in collateral velocity, implies that the viability of the modern Eurodollar system depends on the U.S. government’s IOUs more than any time in history. US Treasuries, the IOU of the US government, is the most high-quality collateral. When times are good, repos work fine: The agreements expire without problems and the collateral gets passed back down the chain smoothly. But eventually, low-quality collateral lurks into the system. That’s fine, until markets hit an inevitable rough patch, like, March 2020 “Dash for Cash” episode. We saw this collateral problem in action. In March credit spreads between good and junkier debt widened and Treasury prices spiked as yields plummeted because of the buying frenzy. The interest rate on one-month Treasurys dropped from 1.61% on Feb. 18 to 0.00% on March 28. That was the scramble for good collateral. The reliance on the repo market to get funding indicates that no one will take the low-quality securities, and everyone struggles for good collateral. So whenever uncertainty is high, there will be a frenetic dash to buy Treasurys—like musical chairs with six to eight buyers eagerly eyeing one chair.