From 1941 through 1945, the U.S. sent $11.3 billion, or $180 billion in 2016 dollars, in goods and services to the Soviets.
The Lend-Lease Act was signed into law on March 11, 1941, and ended on September 20, 1945. A total of $50.1 billion (equivalent to $672 billion in 2023 when accounting for inflation) worth of supplies was shipped, or 17% of the total war expenditures of the U.S. In all, $31.4 billion went to the United Kingdom, $11.3 billion to the Soviet Union, $3.2 billion to France, $1.6 billion to China, and the remaining $2.6 billion to other Allies.