By Yan Carrière-Swallow, Pragyan Deb, Davide Furceri, Daniel Jiménez and Jonathan D. Ostry
Published in the IMF Blog, the article looks at how rising shipping costs will affect inflation in some countries more than others and expects the impact to continue to build
through the end of 2022. The war in Ukraine is also expected to cause further disruptions to supply chains, which could keep global shipping costs—and their inflationary effects—higher for longer.
WASHINGTON DC: The sea carries more than 80 percent of the world’s traded goods, most of which sail
inside 40-foot-long steel containers stacked by the thousands atop some of the largest
vessels ever built.
The shock of the pandemic underscored just how crucial the maritime container trade is
to the global economy. From Shanghai to Rotterdam to Los Angeles, the coronavirus
upended supply chains. Ports lacked workers who were home sick. Truck drivers and
ship crews couldn’t cross borders because of public health restrictions. Pent-up demand
from huge stimulus programs during extended lockdowns overwhelmed the capacity of
supply chains. Besides causing delays in getting goods to customers, the cost of getting
them there surged.
The result of those challenges was that the cost of shipping a container on the world’s transoceanic trade routes increased seven-fold in the 18 months following March 2020, while the cost of shipping bulk commodities spiked even more. Our new research shows that the inflationary impact of those higher
costs is poised to keep building through the end of this year. Our analysis predates the
war in Ukraine but isn’t isolated from it: the conflict will likely exacerbate global inflation.
Studying data from 143 countries over the past 30 years, we find that shipping costs are
an important driver of inflation around the world: when freight rates double, inflation picks up by about 0.7 percentage point. Most importantly, the effects are quite persistent, peaking after a year and lasting up to 18 months. This implies that the increase in shipping costs observed in 2021 could increase inflation by about 1.5 percentage points in 2022.
While the pass-through to inflation is less than that associated with fuel or food prices—
which account for a larger share of consumer purchases—shipping costs are much more
volatile. As a result, the contribution in the variation of inflation due to global shipping
price changes is quantitatively similar to the variation generated by shocks to global oil
and food prices.
Our findings also reveal some of the mechanisms at work. We show that higher shipping
costs hit prices of imported goods at the dock within two months, and quickly pass
through to producer prices—many of whom rely on imported inputs to manufacture
But the impact on the prices consumers pay at the cash register builds up more
gradually, hitting its peak after 12 months. This is a much slower process than what is
seen after a rise in global oil prices, which drivers feel at the pump within a couple of
Rising shipping costs affect inflation in some countries more than others. First, our
research shows that the structural characteristics of an economy matter. Countries that
import more of what they consume see larger increases in inflation, as do those who are
more integrated into global supply chains. Similarly, countries that typically pay higher
freight costs—landlocked countries, low-income countries, and especially island states—
see more inflation when these rise.
Second, a strong and credible monetary policy framework can play a role in mitigating
the second-round effects from import prices and inflation. Our analysis shows that
keeping inflation expectations well-anchored is key to containing the effect of soaring
shipping costs on consumer prices, particularly core measures that exclude fuel and
Our results suggest the inflationary impact of shipping costs will continue to build
through the end of 2022. This will create complicated trade-offs for many central
bankers facing increasing inflation and still ample slack in economic activity. Moreover,
the war in Ukraine is likely to cause further disruptions to supply chains, which could
keep global shipping costs—and their inflationary effects—higher for longer.