The inflation rate in Belgium went up to 11.27 percent in September, its highest level since August 1975, the country's statistical office Statbel said on Thursday.
The rate was 9.94 percent in August and 9.62 percent in July.
The high price of energy was the main driver of inflation. Electricity now costs 81.3 percent and natural gas 134.9 percent more than a year ago.
On Sept. 16, the government of Belgium adopted a new package of relief measures to support households and businesses.
By the end of the year, households will receive a reduction of nearly 400 euros (391 U.S. dollars) on their gas and electricity bills.