The US Customs and Border Protection (CBP) has increased the fee for the Electronic System for Travel Authorisation (ESTA) from US$14 to US$21.

The ESTA allows nationals from 40 participating countries to travel to the US for stays of up to 90 days without a visa.

Travellers who already have an approved ESTA do not have to re-apply as the document is valid for up to two years.

To apply for ESTA, visit the official government website at esta.cbp.dhs.gov. It is advised that applications are submitted no later than 72 hours prior to travel to allow for authorisation.