Zoll und Post is an Android app developed by Bundesministerium der Finanzen that provides an overview for the calculation and collection of import duties. It helps users determine whether their online purchase from a non-EU country is worth the additional fees and taxes. The app also educates users about relevant regulations, such as the health hazards of counterfeit goods or the risks of untested toys or poorly produced electronic devices.

The app requires a network connection to update the conversion rates and to access external links, but it can also operate offline. This feature prevents users from incurring roaming charges. However, keep in mind that the app only provides non-binding calculations, and the actual import duty value is determined by customs officers after reviewing the program. Before using the app, users can read the privacy policy on the website of the Federal Ministry of Finance.