From Paweł Skrzypczyński, “Average effective tariff rate in the U.S.”:
[This page] presents historical data on U.S. average effective tariff rate together with The Budget Lab at Yale estimate of this rate in 2025. The Budget Lab at Yale resources on trade policy issues are available at https://budgetlab.yale.edu/topic/trade. U.S. customs duty revenue data published in Monthly Treasury Statement releases, which is seasonally adjusted by me using X-13ARIMA-SEATS, is also presented on this page. …
