The price of goods imported to the United States rose 0.6% in March, the fourth consecutive increase, the Labor Department reported April 10.
The gain was led by higher costs of food, fuel and industrial supplies, and followed a 0.9% increase in February.
Compared with March 2013, prices declined 0.6%.
Export prices rose 0.8% for the month, the largest increase since September 2012.
Companies may have a difficult time passing on increased costs of imported goods to customers as domestic demand struggles to accelerate, Bloomberg News reported.