Customs@SG is a mobile application developed by Singapore Customs that offers a convenient way for travellers to declare and pay duty and/or Goods & Services Tax (GST) on their overseas purchases, anytime and anywhere prior to their arrival in Singapore. The app also allows members of the public to provide feedback or send enquiries relating to Customs matters. With Customs@SG, users can easily access the following services at their fingertips.

Firstly, the app allows travellers with purchases exceeding their personal duty-free concession or GST relief to declare and pay the duty and/or GST for the goods purchased. This feature ensures that travellers can quickly and easily comply with Singapore's customs regulations, avoiding any delays or penalties upon arrival. Secondly, Customs@SG provides a platform for members of the public to provide feedback or send enquiries relating to customs matters. This feature allows users to communicate with Singapore Customs and receive assistance in a timely and efficient manner.

Overall, Customs@SG is a highly useful mobile application that provides a convenient and efficient way for travellers to comply with Singapore's customs regulations. It also offers a platform for members of the public to communicate with Singapore Customs and receive assistance. The app is free to use and is available on Android devices.