The US will tax large drones (over 25 kg) and thermal-imaging drones at 100%, effective 21 days after the 13 Aug 2026 White House fact sheet. Other drones face 25%, with 10-15% for trade-deal partners such as the EU, Japan, South Korea, Taiwan and Switzerland, and 10% for the UK. Drone parts not sensitive for national security face the rate 180 days out. For a Thai SME this matters only if you export drones or components to the US, or sell into supply chains that feed US drone makers. Otherwise it is background on US-China tech tensions.