Definition
A big step is when a central bank raises its benchmark interest rate by 0.5 percentage points (50 basis points) in a single move. Central banks usually adjust rates in cautious increments of 0.25 percentage points to minimize market shock, but when inflation surges out of control, they double their stride to rein in money circulating in the economy.
Why Take Such a Large Stride?
To stop a speeding car, you have to step on the brakes. Normally, a driver taps the pedal gently to slow down smoothly without jolting the passengers. Central banks do the same: they usually raise benchmark interest rates by a cautious 0.25 percentage points so the economy does not get rattled. This standard stride is often called a 'baby step,' like a toddler's careful first steps.
When inflation spreads like wildfire, however, gentle braking is no longer enough. Tapping the pedal lightly cannot slow down an overheating economy in time. At that point, you have to slam the brakes firmly to prevent a crash, even if it means a bumpy ride for everyone inside.
That is why central banks opt for bold shock therapy, lifting the benchmark rate by 0.5 percentage points all at once—double the typical hike. Because it takes such a massive stride forward, it earned the name 'big step.'
How a Big Step Hits Everyday Life
The moment a big step happens, the mood at commercial banks shifts immediately. When the benchmark rate jumps, deposit and loan rates follow right behind. People with variable-rate mortgages or business loans quickly face much higher monthly interest payments, placing a heavy burden on their finances.
Feeling the pinch, households tighten their belts and cut back on dining out, traveling, and shopping. Businesses also avoid borrowing expensive money to build new factories or hire more staff.
With fewer people and companies spending money, price increases gradually cool down over time. But the cost of taming inflation is shared across society through the pain of an economic slowdown, with sluggish retail sales and fewer job openings.
Looking a Little Closer
Central banks have several different strides beyond just a big step. A standard 0.25-percentage-point hike is a 'baby step,' while doubling that to 0.5 percentage points is a 'big step.' If runaway inflation hits historic highs, central banks may even deploy a 'giant step' (0.75 percentage points) or an 'ultra step' (1.0 percentage point).
Interestingly, none of these are official central bank terms. Financial analysts and journalists coined them as catchy nicknames to explain urgent policy shifts in plain English.
Ultimately, a hefty 0.5-percentage-point jump serves as an unmistakable signal: central bankers are determined to bring inflation under control, even if the broader economy takes a painful hit.
Common misconceptions
A big step means doubling the current interest rate.
It does not mean multiplying the current rate by two (such as hiking from 2% to 4%). It means the size of the single rate hike is 0.5 percentage points, which is double the usual 0.25-percentage-point increment.
Where you meet it
In May 2022, the US Federal Reserve raised its benchmark interest rate by 0.5 percentage points in a single meeting to tame soaring inflation.
In July 2022, the Bank of Korea lifted its policy rate from 1.75% to 2.25%—a 0.5-percentage-point jump marking the first big step in its history—to curb rapid inflation and stabilize foreign exchange rates.
In one sentence
A big step is a decisive central bank action that raises the benchmark interest rate by 0.5 percentage points in one go to rapidly tame soaring inflation.