European travellers to the US will have to pay an extra $14 from next month for electronic visas.
The visas, known as an Electronic System for Travel Authorisation (Esta), have been compulsory for UK tourists and other European visitors since January 2009.
At present, they are free, but from September 8, the US will start charging $14, or around £9 based on the current exchange rates.
Consumer groups are advising people planning a trip to the US to apply now, before the new charge comes into force.
The Esta lasts for two years, or until a person’s passport expires.
See full details about ESTA