All WTO members participate in the Trade Facilitation Agreement (TFA), a rulesbased bottom-up approach built on monitorable provisions (e.g. the publication of information, advance rulings, appeal or review of decisions, transparency, and border agency cooperation) aimed at reducing time in customs. The paper draws on the OECD indicators of the state of implementation of provisions in the TFA summarized in a TFI (Trade Facilitation Index). to estimate the reduction in waiting-time at customs for a large sample of 160 countries.