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Longitudinal Firm Trade Transactions Database (LFTTD)

The Longitudinal Firm Trade Transactions Database (LFTTD) links individual trade transactions to the U.S. firms that make them. That is, it links export transactions to the U.S. exporter and import transactions to the U.S. importer. The LFTTD contains the same firm identifier found in many other Census data products. This allows linkages between the LFTTD and other Census data products such as the Longitudinal Business Database (LBD), the Economic Censuses, and other surveys.

The export and import transactions in the LFTTD are the universe of trade transactions data collected by the Customs Bureau during the importation or exportation process, containing value, date, country of origin or destination, quantity, HS code, and other variables. For details, see example forms for importation (CBP 7501) and an example of the shipper’s export declaration PDF (127 KB).


LFTTD Restricted–Use Microdata
Economic – Transactions Data
Census Bureau
Unit of Enumeration
Exports - Over 37 Million in 2015
Imports - Over 77 Miliion in 2015
This is a transaction by firm level dataset. The number of observations varies by year.
Related Links
More Information
Bernard, A. B., Jensen, J.B., Schott, P.K., 2009. Importers, Exporters, and Multinationals: A Portrait of Firms in the U.S. that Trade GoodsPDF (373 KB). In Producer Dynamics: New Evidence from Micro Data, University of Chicago Press.

 What are Microdata?

Microdata are data at the level of the establishment, firm, individual, or household that are collected through census and survey programs.

 What is the BDS?

The Business Dynamics Statistics (BDS) is a public use data set of annual aggregate statistics describing establishment openings and closings, firm startups, job creation and destruction by firm size, age, industrial sector, and state.

 What are Federal
 Statistical Research
 Data Centers?

Federal Statistical Research Data Centers (RDCs) are U.S. Census Bureau facilities, staffed by a Census Bureau employee, which meet all physical and computer security requirements for access to restricted–use data. At RDCs, qualified researchers with approved projects receive restricted access to select non–public statistical system data.

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Source: U.S. Census Bureau | Center for Economic Studies | (301) 763-6460 | E-mail CES |  Last Revised: August 20, 2018