QE: The Fed’s Printing Press

For the first 95 years of its existence, the Federal Reserve operated with a remarkably simple balance sheet. On the asset side, it held Treasury securities and gold. On the liability side, it issued currency and maintained bank reserves. The total size of the balance sheet grew slowly, roughly in line with the economy. In January 2003, when FRED’s weekly WALCL series begins, total Fed assets stood at $731 billion. Five years later, in January 2008, they were $922 billion. Boring. Predictable. Exactly the way central bankers liked it.

The Fed controlled monetary policy through one primary tool: the federal funds rate. By buying or selling small quantities of Treasury securities in open-market operations, it nudged the overnight lending rate between banks up or down. When the economy overheated, the Fed sold securities, draining reserves and pushing rates up. When it cooled, the Fed bought securities, adding reserves and pushing rates down. The balance sheet was a means to an end — not the end itself.

All of that changed on September 15, 2008, when Lehman Brothers filed for bankruptcy.

The weeks after Lehman’s collapse were the closest the global financial system has come to total meltdown since the 1930s. The commercial paper market froze. Money market funds “broke the buck.” AIG needed an $85 billion rescue. Every major bank in America was, by some measures, insolvent. The federal funds rate had already been cut to 1%, and by December it would hit the “zero lower bound” — 0% to 0.25%. There was no more room to cut.

So the Fed, under Chairman Ben Bernanke — an academic who had spent his career studying the Great Depression and Japan’s “lost decade” — did something no major central bank had done since the Bank of Japan in 2001. It began buying long-term securities directly, not to adjust short-term rates, but to push down long-term rates and inject massive quantities of reserves into the banking system. This was quantitative easing.

On November 25, 2008, the Fed announced it would purchase up to $600 billion in mortgage-backed securities (MBS) and $100 billion in agency debt. In March 2009, it expanded the program to $1.25 trillion in MBS and added $300 billion in Treasury purchases. The balance sheet, which had been $905 billion in September 2008, reached $2.24 trillion by December 2008 — more than doubling in three months. It wasn’t just the size that was unprecedented. It was the composition. The Fed was now holding mortgage-backed securities — the very instruments that had caused the crisis — on its balance sheet.

The initial balance sheet expansion was partly through emergency lending facilities (the Term Auction Facility, the Primary Dealer Credit Facility, the Commercial Paper Funding Facility) and partly through direct securities purchases. As the emergency lending programs wound down through 2009, the securities purchases ramped up, keeping the balance sheet elevated. By March 2010, when QE1 formally ended, total Fed assets stood at roughly $2.3 trillion.

By mid-2010, the emergency was over but the recovery was agonizingly slow. Unemployment sat at 9.5%. Inflation was running below 1%. Talk of a “double-dip recession” dominated the business press. The Fed debated: was QE1 enough, or did the economy need another dose?

On November 3, 2010, the Fed announced QE2: $600 billion in Treasury purchases over eight months. This time, there were no MBS purchases — it was pure Treasury buying, intended to push down long-term interest rates and force investors into riskier assets (a mechanism Bernanke explicitly described as the “portfolio balance channel”). If the Fed bought up safe Treasuries, investors holding those Treasuries would need to reinvest somewhere else — corporate bonds, stocks, real estate.

QE2 was far more controversial than QE1. The emergency justification was gone. Critics accused the Fed of debasing the dollar. Rick Perry, the governor of Texas and presidential candidate, called Bernanke’s policy “almost treasonous.” China’s central bank warned of “global instability.” The German finance minister Wolfgang Schäuble compared it to an attempt to “artificially depress the dollar.”

The Fed pressed ahead. By June 2011, it had purchased the $600 billion, and the balance sheet reached $2.87 trillion. The S&P 500, which had bottomed at 666 in March 2009, was above 1,300. The stock market was recovering even if Main Street wasn’t.

Between QE2 and QE3, the Fed tried a halfway measure called Operation Twist (September 2011 – December 2012). Instead of expanding the balance sheet, the Fed sold short-term Treasuries and bought long-term ones — “twisting” the yield curve by pushing down long rates without adding new money. The total balance sheet stayed flat at around $2.9 trillion, but the composition shifted toward longer-dated securities. It was QE’s polite cousin — less raw, less inflationary, and ultimately less effective.

By September 2012, the patience ran out. With unemployment still at 8.1% and Europe’s debt crisis threatening to spill over, the Fed launched QE3 — and this time, it was open-ended. No fixed amount. No end date. The Fed committed to buying $40 billion per month in MBS, later expanded to $85 billion per month ($40 billion MBS + $45 billion Treasuries). It would continue “until the labor market improves substantially.”

This was the nuclear option. Open-ended QE meant the market knew the Fed would keep buying no matter what, creating an implicit floor under asset prices. The S&P 500 surged from 1,440 in September 2012 to 2,000 by late 2014. The balance sheet swelled from $2.82 trillion to $4.49 trillion by October 2014, when the Fed finally tapered its purchases to zero.

The mechanics of QE are deceptively simple, but the effects ripple through the entire financial system. Here is the step-by-step process:

Step 1: The Fed announces it will buy bonds. It places orders through its primary dealers — the two dozen banks (JPMorgan, Goldman Sachs, Citigroup, etc.) authorized to trade directly with the Fed.

Step 2: The Fed pays for the bonds by crediting the sellers’ reserve accounts. This is the “printing press” moment, though no physical money is printed. The Fed simply types a number into a computer, and the selling bank’s reserve account at the Fed increases. These reserves are, in a very real sense, created from nothing. The Fed’s balance sheet grows: it now has more assets (the bonds) and more liabilities (the reserves).

Step 3: The banks now have excess reserves. In theory, they should lend these reserves out, creating new deposits and expanding the money supply through the fractional-reserve multiplier. In practice, after 2008, banks mostly parked the excess reserves at the Fed, earning a small interest rate (the Interest on Excess Reserves, or IOER). This is why the monetary base quintupled but M2 only roughly doubled — the money multiplier collapsed.

Step 4: Long-term interest rates fall. By buying massive quantities of Treasury bonds and MBS, the Fed pushes their prices up and their yields down. The 10-year Treasury yield fell from 4% in late 2008 to 1.4% in mid-2012. Mortgage rates followed, dropping below 3.5%. This made borrowing cheaper for homebuyers, corporations, and governments.

Step 5: The “portfolio rebalancing” effect. Investors who would have held safe Treasuries now find those yields unacceptably low. They shift into riskier assets — corporate bonds, stocks, real estate — bidding up prices. This is the “wealth effect” that Bernanke explicitly cited: rising asset prices make people feel wealthier, encouraging them to spend.

Before the crisis, the Fed held almost exclusively Treasury securities — about $740 billion worth. It was a clean balance sheet. After QE, it held a sprawling portfolio of Treasuries and mortgage-backed securities. By the end of QE3, the Fed owned roughly $2.5 trillion in Treasuries and $1.7 trillion in agency MBS — making it the largest holder of U.S. government debt and the largest holder of mortgage securities on the planet.

The MBS holdings were particularly controversial. By buying mortgage securities, the Fed was effectively subsidizing the housing market — pushing mortgage rates lower than they would be otherwise, inflating home prices, and channeling capital into real estate rather than other investments. Critics called it a “backdoor bailout” of the banks that had created the mortgage mess in the first place. Supporters argued that the housing market was the economy — and if it kept falling, everything else would fall with it.

The other side of the balance sheet was equally dramatic. Bank reserves — which had been about $10 billion before the crisis (banks held as few reserves as legally possible) — exploded to over $2.6 trillion by January 2014. This was the raw money that the Fed had created. It existed as digital entries in the reserve accounts of commercial banks, and most of it stayed there, earning interest from the Fed rather than being lent into the economy.