EXPLAINER - How do central banks fight inflation?

Inflation is when prices rise, reducing the purchasing power of your money. When it happens slowly, it’s manageable. But when it surges, it can disrupt savings, wages, business planning, and economic growth. That’s when central banks step in.

Why does inflation happen?

Inflation occurs when demand outpaces supply. That can happen for several reasons:

• A surge in consumer or government spending
• Shortages of goods or raw materials
• Rising wages or production costs
• External shocks such as wars or supply chain disruptions

In most economies, some inflation is healthy. But when it rises too fast or stays high for too long, it eats into incomes and savings and can trigger uncertainty.

“Inflation erodes confidence in the economy. It hits the most vulnerable households hardest and distorts decision-making across the board.”
— Dr. Clara Portman, Global Monetary Policy Expert

The central bank’s main mission

Central banks, like the Federal Reserve in the U.S. or the Bank of England in the UK, are tasked with keeping prices stable. Their main tool is monetary policy, which controls the supply of money and the cost of borrowing.

The goal is to slow inflation without causing a recession — a process often called a “soft landing.”

“Central banks are walking a tightrope. Act too slowly, and inflation gets out of control. Act too aggressively, and you risk stalling the economy.”
— Richard Nephew, former U.S. sanctions and monetary policy adviser

Tools central banks use to fight inflation

 Raising interest rates

This is the primary lever for most central banks. Higher interest rates make it more expensive to borrow and more attractive to save.

This can lead to:

• Lower consumer spending (mortgages, car loans, credit cards all become pricier)
• Slower business expansion (loans to invest become costlier)
• Cooling of housing and stock markets
• Overall decline in demand, which helps ease price pressures

“Interest rates are the brake pedal of the economy, push too hard and you stall; too soft and you slide.”
— Ahmed El-Masri, Trade and Geopolitics Analyst

In the U.S., the Federal Open Market Committee (FOMC) sets a target range for the federal funds rate, and uses supporting tools like the interest on reserves and overnight repurchase agreements to guide the market to that range.

 Open Market Operations (OMO)

This involves buying or selling government securities to influence the money supply:

Selling bonds pulls cash out of the system, raising rates and tightening financial conditions
Buying bonds injects money, which lowers rates and stimulates growth (used in deflationary environments)

OMO helps control short-term liquidity and keeps inflation aligned with central bank targets.

Reserve requirements

Though used less often today, some central banks can adjust how much money banks must keep in reserve. If reserve requirements go up:

• Banks have less money to lend
• Credit tightens
• Spending slows
• Inflation is dampened

In the U.S., this tool has been set to 0% since 2020, but the Federal Reserve retains the authority to adjust it again if needed.

The discount rate

This is the interest rate charged by the central bank to commercial banks that borrow directly from it.

A higher discount rate:

• Makes emergency borrowing more expensive
• Signals tighter financial conditions
• Often leads banks to lend more cautiously

It's a supplementary tool, but part of the overall framework.

Forward guidance

Central banks use public statements to shape expectations.

For example, if a central bank hints that rates will stay high for a while, markets may adjust accordingly, even before any action is taken.

“Guidance matters. A well-communicated strategy can do half the job before a rate hike even takes effect.”
— Marianne Leclerc, EU monetary policy advisor

Clarity builds credibility, and that anchors long-term inflation expectations.

Currency management (selectively used)

A stronger currency makes imports cheaper. This can help reduce imported inflation, especially when energy or food prices are rising globally.

Some central banks may intervene in foreign exchange markets or use interest rates to influence currency strength, although this is typically used in tandem with other policies.

Inflation targeting: setting the goal

Many central banks operate under an inflation-targeting regime, where they aim to keep inflation around a specific figure, usually 2% per year.

The idea is to:

• Provide stability and predictability
• Anchor inflation expectations
• Guide policy decisions in a rules-based framework

For instance, the Bank of England has had a 2% inflation target since 1992. If inflation overshoots, they raise interest rates. If it undershoots, they may lower them.

“A credible target isn’t just a number — it’s a signal to everyone in the economy about what the central bank is willing to do.”
— Shohini Ghose, Economic Policy Researcher

What about price controls?

Historically, some governments have tried using price or wage controls, setting caps on how much certain goods can cost.

While this may offer temporary relief, most economists view it as unsustainable in the long term. It can lead to shortages, distortions, and black markets.

Modern central banks prefer market-based tools, like interest rate adjustments, which target inflation at the source, demand and money supply.

Why it’s hard to fight inflation

Controlling inflation isn’t instant. It often takes 12 to 24 months for the full effects of higher interest rates to ripple through the economy.

Other challenges include:

• Global commodity price volatility
• Unpredictable events (wars, pandemics, supply shocks)
• Wage-price spirals (where higher wages fuel further price increases)

“Inflation control isn’t about flipping a switch — it’s about managing a moving target while the ground keeps shifting.”
— Dr. Clara Portman

The bottom line

Central banks use a mix of interest rate policy, liquidity management, reserve requirements, and communication to control inflation. Their aim is to slow down price growth without pushing the economy into recession, a delicate balance.

While no tool is perfect, monetary policy remains the most effective mechanism we have for keeping inflation in check over time.

And while inflation is always influenced by global forces, credible, well-communicated central bank actions remain essential to maintaining economic stability at home.

Tags

News Economy Central Banks