Perli says Fed's bill purchase pause is not a final stop

The Federal Reserve's purchases of Treasury bills have halted, though a permanent end has not been declared. Roberto Perli, the New York Fed official overseeing the central bank's daily market operations, stated Tuesday that the Fed's Reserve Management Purchases lack a predetermined path and will be adapted based on market liquidity requirements. This allows for a potential restart if the financial system requires additional cash.

As manager of the System Open Market Account, Perli delivered these comments during closing remarks at a New York Fed conference focused on Treasury market issues. He noted that the Fed's set of tools for managing short-term interest rates has performed effectively: interest rate control has remained tight, reserves have stayed within what the Fed deems the ample range, and bill purchases proceeded without disruption. He further characterized the central bank's reserve forecasting as solid and indicated that providing a centrally cleared option for its standing repo operations would yield distinct advantages for policy execution.

For many observers, such statements may seem insignificant. However, these comments address the infrastructure that enables the Fed's interest rate decisions to function, and they are relevant for those attempting to understand balance sheet headlines. Below is an explanation of their significance.

What bank reserves are, and what "ample" means

Bank reserves represent the balances that commercial banks keep in their accounts at the Federal Reserve. These funds are utilized by banks to clear payments between institutions and to satisfy liquidity standards. The Fed manages the overall supply via its purchases and sales of assets, though additional flows also affect the level.

Since 2019, the Fed has operated under what it terms an ample reserves framework. Prior to the 2008 financial crisis, the central bank maintained scarce reserves and adjusted their supply nearly on a daily basis to influence interest rates. Currently, it ensures that reserves are sufficient so that typical daily fluctuations do not cause instability in short-term rates. Should reserves decline excessively, rates could spike unpredictably; therefore, the objective is to remain safely above that threshold without providing an excessive amount beyond what the system requires.

How the Fed keeps rates inside its target range

The Federal Reserve establishes a target range for the federal funds rate, which is the interest rate banks levy on each other for overnight lending. Under an ample reserves regime, it achieves that range primarily via rates it sets directly, rather than through modifying the volume of reserves.

The interest paid by the Fed on reserve balances serves as a floor, as banks are unlikely to lend funds in the market at a rate lower than what the Fed offers. The overnight reverse repo facility, accessible to a broader set of participants including money market funds, assists in establishing a lower bound for market rates. On the upper side, the standing repo operations enable eligible entities to borrow cash by pledging Treasuries at a fixed rate, which is intended to limit abrupt surges.

Perli's statement that the Fed has maintained very strong interest rate control indicates that market rates have remained within the intended range set by the central bank.

What Reserve Management Purchases are

Reserve levels are not static. They decline when the Treasury accumulates cash in its Fed account, such as around tax due dates, and as the demand for physical currency increases over time. If not managed, these outflows can lead reserves toward insufficiency.

Reserve Management Purchases, initiated in December of the previous year, represent the Fed's countermeasure. Through acquisitions of Treasury bills, the Fed injects reserves into the banking system and maintains them within the ample range. The central bank recently reduced the purchase pace to zero after determining that liquidity in the system was adequate. Perli emphasized that this hiatus is essentially identical in nature to all prior modifications by the New York Fed's trading desk since the program began. It is a configuration, not a conclusion.

Why this isn't quantitative easing

This represents a critical difference and is frequently misunderstood. Buying bills expands the Fed's balance sheet, which appears superficially similar to the quantitative easing implemented after the financial crisis and during the pandemic. However, the intent and structure diverge.

Quantitative easing entailed purchasing substantial quantities of longer-term Treasuries and mortgage-backed securities with the aim of reducing long-term borrowing costs and stimulating the economy. Reserve Management Purchases are concentrated on bills that mature in under a year, and their scale is determined by the banking system's reserve requirements rather than by a desire to alter financial conditions. These purchases are technically oriented and are not intended to boost economic activity. The Fed's policy position continues to be determined via its federal funds rate target range.

Why reserve forecasting matters

In order to determine the appropriate purchase volume, the Fed must predict reserve movements, which involves projecting flows outside its control, including the Treasury's cash balance, usage of the reverse repo facility, and currency demand. A significantly erroneous forecast could allow reserves to dip below the ample level unexpectedly.

The most vivid illustration occurred in September 2019. Combined corporate tax payments and the settlement of new Treasury issuance simultaneously drained reserves, leading to a sharp spike in overnight repo rates and a temporary rise of the federal funds rate above its target range. The Fed countered with emergency repo operations and subsequently started purchasing bills to replenish reserves—an event that influenced the current framework.

Perli stated that the New York Fed's forecasting methodology is solid and typically highly accurate, with errors over the last four years amounting to a very small percentage of total reserves that were readily accommodated by the ample reserves framework. Essentially, the Fed is communicating to markets that it can maintain reserves near desired levels without endangering a recurrence of the 2019 episode.

Central clearing and the standing repo operations

Perli's last topic addressed the structure of the standing repo operations. Currently, these transactions lack central clearing. Central clearing would direct them through a clearinghouse positioned between the Fed and the borrowing entity.

The primary advantage is balance sheet efficiency. With central clearing, dealers can frequently net opposing positions, lowering the balance sheet cost of utilizing the facility. This could increase firms' willingness to access it during times of market strain, exactly when the Fed intends it to serve as a backstop. Perli presented the benefits solely from an implementation viewpoint and did not announce any modifications.

What to watch

Perli's comments portray a Fed that considers its framework effective and aims to maintain flexibility. For market participants, the key indicators are:

• Resumption of bill buying would signal that the Fed perceives a tightening of liquidity, not a shift toward looser monetary policy.
• Short-term funding rates, especially repo rates near the end of September quarter-end and around tax deadlines, compared to the Fed's target range. Increases in this area provide the earliest indication that reserves are becoming scarce.
• Any concrete move toward providing centrally cleared standing repo, which would reinforce the Fed's safety net for money markets.