What ESTA approves

The Electronic System for Travel Authorization determines whether a traveller may travel under the US Visa Waiver Program. It is not a visa and does not guarantee admission. Eligible travellers use it for temporary tourism or permitted business activity, normally for stays of up to 90 days.

Visa Waiver Program travel requires an eligible nationality and an e-passport. Temporary or emergency passports must also meet the e-passport rule. Each traveller, including a child, needs an individual passport and ESTA. Since October 2022, VWP travellers arriving at a US land border also need an approved ESTA before requesting admission.

When a B1/B2 visa is the better or required route

A visitor visa is needed when the passport is not from a VWP country, the trip will exceed 90 days, the activity is not permitted under VWP, or the traveller is otherwise ineligible for ESTA. A person may also choose to apply for a B visa rather than use the VWP.

ESTA does not support employment, degree study or migration. B1 covers qualifying business visitor activities, not ordinary employment. B2 covers tourism and family visits. The issued visa category and border admission determine what is permitted.

Travel and dual-nationality restrictions

Official CBP guidance says some VWP nationals must obtain a visa because of travel or presence in specified countries. The rules include travel to or presence in North Korea, Iran, Iraq, Libya, Somalia, Sudan, Syria or Yemen on or after 1 March 2011, with limited official-duty exceptions, and Cuba on or after 12 January 2021.

The rules also affect VWP-country nationals who are dual nationals of Cuba, North Korea, Iran, Iraq, Sudan or Syria. These restrictions do not automatically ban US travel; they generally mean the person must use the visa process instead of VWP travel.

Because US entry and visa restrictions can change, applicants should also check current nationality-specific notices before applying or travelling.

Practical preparation

  • Apply through the official ESTA site, not an imitation charging unnecessary service fees.
  • Use the passport that will be used for travel and review any other citizenship carefully.
  • Disclose travel and immigration history accurately.
  • Do not treat a trip to Canada, Mexico or nearby islands as a fresh 90-day period; it usually remains within the original admission period.
  • Keep evidence of the temporary purpose, return plans and funds available for inspection.

A recent visa refusal can affect ESTA processing or border review. Do not conceal it. If the facts are complex, a visa application may provide the appropriate route for a full review.

Official sources

Last checked: 1 September 2026.