If you are taking cigarettes into Singapore for your own use, you need to: 1. declare them at the red lane, 2. pay the duties of 35.2 Singapore cents per gram of each cigarette or part thereof, and GST of 7%, 3. keep the receipts to prove you have paid duties and taxes. Disclaimer: Visitors should refer to the official information on tobacco duties at the Singapore Customs website (http://www.customs.gov.sg).