Most of our customers already familiar with THIS Since it have been in force for over a year, although not fully implemented. Once the THIS has been approved, is valid for a period of two years and may be used for multiple entries by the US tourist Visa. However, in a controversial move, ESTA will not be free for long. The Senate U.S. voted last year to charge for visitors to complete the form. A secondary approval House of Representatives could result in by at least USD 10To is introduced in a few months or so from next summer.