There are few economic decisions capable of simultaneously altering the price of money, currency values, credit costs, stock market behavior, bond markets, and international capital flows across the entire globe. One of them is a decision by the Federal Reserve. The Fed demonstrated this once again on September 16, when it raised its benchmark rate by 25 basis points to a range of 3.75% to 4.00%, in a unanimous decision by the Federal Open Market Committee. The reasoning was familiar: inflation remains elevated and the U.S. economy maintains a solid enough pace of activity to justify a more restrictive monetary policy.

However, this time there is something different. It is not merely an isolated hike; markets are beginning to price in that the movement may continue, and several signals point in that direction. For example, the Federal Reserve Bank of San Francisco noted in early September that financial markets were expecting the rate to reach approximately 4.25% by mid-2027, which would be equivalent to two or three additional 25-basis-point increases from current levels.

The Fed itself is somewhat more cautious: its September projection places the median rate at 4.1% at the close of both 2026 and 2027, although the distribution among officials shows considerable dispersion. The difference between both views is important, but even more important is history, because this is not the first time the Fed has embarked on a path of monetary tightening.

Over the last 30 years, at least five major episodes can be identified that allow us to observe what happens when the U.S. central bank decides that money should stop being so cheap:

1. 1994–1995: The Greenspan Scare

2. 1999–2000: The Fed Cools Down the Tech Party

3. 2004–2006: Greenspan’s Measured Pace

4. 2015–2018: Normalization After Near-Zero Money

5. 2022–2023: The War Against Inflation

Five episodes, five distinct economic circumstances, and five different market responses. But with one common element: when the Fed moves rates in a sustained manner, virtually no major market remains indifferent.

1994: When the Fed Surprised the World, and Mexico Collapsed

The first of the major episodes of the period began in 1994. The U.S. economy was growing, and the Federal Reserve decided to preempt potential inflationary pressures. The result was one of the most aggressive tightening processes of the modern era up to that point. The federal funds rate went from around 3% at the beginning of 1994 to 6% in February 1995. Among the most remembered decisions was the 75-basis-point increase in November 1994; the problem was that markets were unprepared for the speed of the adjustment. As a consequence, U.S. bond yields surged sharply, causing a major correction in fixed-income markets. The impact was not confined to the United States either, as Mexico was particularly exposed.

The rising cost of money in the United States contributed to tightening financial conditions for emerging markets just as Mexico faced its own vulnerabilities: debt, external imbalances, and an exchange rate that would prove unsustainable. In December 1994, the peso crisis erupted. The Federal Reserve Bank of Dallas has noted that U.S. tightening delivered the final blow to a Mexican economy already exhibiting internal vulnerabilities. Between November 1994 and March 1995, the real exchange rate of the peso collapsed by more than 40%, while three-month Cetes rates had risen from around 10% in February 1994 to 14% in November. The episode left a primary lesson:

The Fed does not need to directly trigger a crisis to become part of it. It is enough for it to change the price of money in the United States for highly indebted countries, vulnerable currencies, and markets dependent on external financing to begin feeling the pressure.

1999–2000: Cold Water on the Tech Party

Five years later, the backdrop was completely different; the U.S. economy was enjoying the expansion associated with the technological revolution, the internet had transformed corporate expectations, and equity markets had entered a genuine frenzy. Then, the Fed raised rates again, with the federal funds rate going from 4.75% in mid-1999 to 6.5% in May 2000 after several consecutive hikes. The Nasdaq reached its historical peak of that era on March 10, 2000.

At that time, the largest companies on the Nasdaq were dominated by tech firms; six of the top 20 companies had not even recorded profits in the final quarter of 1999, according to a subsequent analysis by the Federal Reserve Bank of San Francisco. The Fed did not create the tech bubble nor was it the sole cause of its eventual burst. Extreme valuations, expectations around new technologies, and massive capital inflows played fundamental roles, but rising borrowing costs altered financial conditions.

Then a recurring feature of Fed cycles reappeared: when rates rise, the price investors are willing to pay for future growth changes, and tech companies were particularly sensitive to that shift. The epilogue of this Fed tightening brought a long correction for the Nasdaq and a subsequent economic recession in the United States.

2004–2006: The Measured Pace That Couldn’t Prevent the Storm

The next cycle is especially interesting because the Fed tried a different approach. After lowering the benchmark rate to just 1% in 2003 and keeping it there for an extended period, the central bank began a process of gradual increases in June 2004. There were 17 consecutive 25-basis-point hikes, pushing the rate from 1% to 5.25% by June 2006.

The Fed’s own language spoke of “measured” adjustments, but the economy had already accumulated significant imbalances, especially in the housing market and mortgage credit. In June 2006, when the Fed raised the rate to 5.25%, it acknowledged that growth was moderating and the housing market was cooling down, while warning that inflationary risks persisted. A year later, rate cuts began, and shortly after came the global financial crisis.

The link between the 2004–2006 hikes and the 2008 crisis must be handled with care: monetary tightening alone does not explain the crisis, as mortgage market dynamics, leverage, securitization, and risk management were decisive. But the cycle left a vital lesson: the effects of rate hikes do not necessarily show up the moment the Fed presses the button—they can take months or even years to manifest.

2015–2018: The End of the Near-Zero Money Era

The following experience was even more peculiar. After the 2008 financial crisis, the Fed slashed rates to near zero and kept them there for years. It was not until December 2015 that the normalization phase began. The first hike was 25 basis points, moving the target range to 0.25%–0.50%. Gradual increases followed in 2016, 2017, and 2018; by December 2018, the rate stood at 2.25%–2.50%—a policy clearly distinct from 1994.

The Fed was not trying to rein in an overheating economy or a tech bubble; it was attempting to return gradually to a more normal monetary policy after nearly a decade of extraordinary easing. But the market ultimately remembered who held the keys to money. Toward the end of 2018, concerns grew over global growth, trade tensions, and financial conditions. The Fed signaled it would be patient regarding further adjustments; consequently, the rate did not come close to 2000 or 2006 levels, yet the market still reacted. After years of near-zero rates, 25 basis points carried a very different significance for investors.

2022–2023: The Fed Brings Out the Heavy Artillery

If the previous four cycles had demonstrated the Fed’s power, the episode starting in 2022 recalled something even more fundamental: when inflation becomes the primary threat, the Federal Reserve can raise rates with extraordinary speed. In March 2022, the target range was 0.25%–0.50%, but by December of that year, it had reached 4.25%–4.50%. That was seven rate hikes in nine months, including four consecutive 75-basis-point increases between June and November. The rate continued upward in 2023 to reach 5.25%–5.50%, triggering global financial tightening. The U.S. dollar surged against numerous emerging currencies, sovereign yields rose, financing costs escalated, and investors sought shelter in U.S. assets.

The IMF had warned that accelerated Fed tightening could trigger capital outflows and currency depreciations in emerging markets. In July 2022, the institution noted that dollar strength was exacerbating inflationary pressures in other nations while capital was departing emerging markets. Once again, the Fed moved a U.S. rate, and once again, the impact crossed borders. Now, a story seen across at least the past three decades of financial globalization begins anew as we enter 2026.

The Fed has just raised its reference rate again to 3.75%–4.00%, but the context differs from 2022. Four years ago, the U.S. economy was emerging from the pandemic with inflation at multi-decade highs. Today, the economy continues to expand, productivity has strengthened, and corporate investment remains robust, though inflation stays above the 2% target. The Fed projects 2026 PCE inflation at 3.7% before gradually declining toward 2% by 2029. Meanwhile, markets are beginning to price in additional hikes.

The San Francisco Fed estimated in early September that markets were discounting a rate near 4.25% by mid-2027—equivalent to two or three additional 25-basis-point moves. That does not guarantee it will occur, but the Fed’s median forecast sits at 4.1% for late 2027, with a wide dispersion of scenarios among officials. For markets, the debate is already underway.

The Fed Changes a Rate; Markets Change Regimes

Here lies perhaps the main lesson of the past 30 years. There is no formula stating that every Fed hike triggers a stock market crash, a crisis, or a recession. In some episodes, equities continued rising during much of the cycle. In others, bonds suffered first. In still others, emerging currencies or speculative market segments took the hit. What does repeat is something else:

A rate hike changes the relative price of money, altering valuation rules for virtually every asset class. Rates impact credit costs, affecting consumption and investment; rates alter the relative appeal of bonds versus equities; and the spread between U.S. rates and the rest of the world influences capital flows, the dollar, and emerging currencies.

The Chicago Fed summarizes this transmission mechanism: changes in the federal funds rate propagate to other interest rates, the international value of the dollar, and asset prices that shape spending and investment decisions. That is why the Fed can make a decision in Washington and trigger moves in Mexico City, São Paulo, London, Tokyo, or Buenos Aires.

Five Cycles, Five Different Markets

Another takeaway is essential: the five episodes did not produce identical outcomes because the world the Fed confronted was different each time. In 1994, the key risk for emerging markets was external debt dependency; in 2000, tech exuberance; in 2006, housing and financial leverage; in 2018, unwinding a decade of near-zero rates; in 2022, global inflation forcing central banks off emergency policies.

Today’s landscape introduces new variables: massive fiscal deficits, extraordinary funding needs, huge AI investments, geopolitical shifts, energy, tariffs, and a U.S. economy showing an unusual mix of growth and persistent inflationary pressure. The sixth episode will not necessarily mirror any of the previous five, but the underlying mechanics endure. When the central bank issuing the primary global reserve currency alters the price of money, the rest of the planet must adjust.

The Certainty

Thirty years provide enough perspective to distinguish between a coincidence and a pattern: not every Fed rate-hike cycle ended in crisis; not all triggered bear markets; not all hit emerging markets equally. But all of them forced markets to recalculate the price of money and the value of assets.

The core question should not just be whether the Fed will raise rates another 25 or 50 basis points, but what happens when investors, after adapting to specific financial conditions, realize the rate regime is shifting once again. The past 30 years offer five different answers, none suggesting a Fed rate hike is a minor event. Amid few certainties in financial markets, one stands firm: when the Fed changes course, the markets listen. Traders capture this reality in a phrase repeated through every cycle: The Fed is the Fed.