Exposure to secondhand smoke (SHS) risks children’s health. However, biomarkers are rarely used to study SHS exposure among children in low- and middle-income countries. We analyzed cross-sectional data collected between March and November 2022 for a cluster-randomized controlled trial investigating a Smoke-Free Intervention in 2769 children aged 9–15 in 74 schools (34 in Dhaka, Bangladesh,

Taxation is the most cost-effective instrument to regulate the consumption of tobacco products. However, weak tax administration can compromise the effectiveness of taxation. This paper aimed to understand the process of the current tobacco tax administration system in Bangladesh, identify gaps and outline the policy priorities to strengthen the tobacco tax administration process in Bangladesh.