American economists Robert Hall and Michael Woodford have been awarded the 2026 Nobel Prize in Economics. Their work helped explain how central banks, including the US Federal Reserve and the European Central Bank (ECB), can influence inflation and stabilize the economy during periods of crisis.  

Back in 1978, Robert Hall developed a model showing that people’s spending decisions are influenced by their long-term financial outlook, not just by the salary they receive in a given week or month. After all, we do not usually rush out to buy a refrigerator or a new phone simply because we received our salary or a bonus this month. Our spending is more likely to change if we get promoted, land a higher-paying job, or face unexpected financial circumstances. As they say, life happens.  

Later, Hall and Frederic Mishkin investigated how well this theory matched real-world behavior. Their findings suggested that the spending patterns of approximately 80% of the households studied were consistent with the permanent income hypothesis. In other words, their consumption patterns reflected more than just their current earnings; they were also consistent with decisions based on longer-term financial prospects. The remaining 20% were more sensitive to changes in current income. Simply put, their spending depended more heavily on how much money they had coming in at the time.  

Imagine a government decides to give everyone $1,000. Some people might put the money into savings, buy bonds or stocks, or pay off outstanding debt. In these cases, the money would not necessarily translate into immediate spending on consumer goods and services. Others, however, might use it to make purchases right away, directly boosting retail sales and demand for services.  

If a large number of people start spending their payments at the same time while stores and warehouses are running low on stock, the sudden surge in demand could push prices up in certain market segments. Of course, the outcome also depends on whether businesses can quickly increase the supply of goods and services to meet that demand.  

Michael Woodford, for his part, connected individual decision-making with the behavior of businesses and the broader economy. In the real world, companies cannot always adjust their prices every day. Changing prices can involve costs, supplier contracts, competitive pressures, and the risk of losing loyal customers. In economics, this phenomenon is known as price rigidity, or, more informally, “sticky prices.”  

Here is a simple example. A pizzeria or fast-food restaurant owner cannot keep changing the price of a pizza or a drink just because they woke up on the wrong side of the bed or the rain outside put them in a bad mood. Changing prices may require updating menus, renegotiating supplier agreements, and, most importantly, making sure regular customers are not driven away by higher prices.  

Because of these constraints, prices may respond to changes in economic conditions with a delay. When prices do not adjust immediately to shifts in demand, monetary policy can help influence economic activity and bring inflation under control.  

Woodford’s work highlighted the importance of interest rates in this process. Modern central banks influence the economy not only through the money supply but also through borrowing costs and the expectations of households, businesses, and investors. This is how institutions such as the US Federal Reserve and the ECB operate: they adjust interest rates to bring inflation down or, when appropriate, support economic activity.  

One of the key insights of modern macroeconomics is that the global economy is shaped not only by the latest figures in economic reports but also by what people expect to happen next.  

If you fear an economic collapse, a pay cut, or losing your job, you may start cutting back on spending today. Similarly, if a business anticipates a crisis, higher raw material costs, or a sharp move in the dollar or euro exchange rate, it may adjust its prices in advance.  

This is where a powerful tool comes into play forward guidance - communication from a central bank about the likely future direction of monetary policy.  

Imagine the head of a central bank steps up to a press conference and signals “We are likely to raise interest rates in three months.”  

The decision has not yet been made, and no rate change has been formally approved. Yet financial markets may already react. Investors reassess their portfolios and forecasts, banks reconsider lending terms, and businesses adjust their plans. If the central bank’s message is credible, some of the economic response can happen before interest rates actually change.  

That is why a credible signal about future policy can sometimes do part of the work in advance. After all, the economy responds not only to decisions that have already been made but also to decisions that market participants reasonably expect to happen.