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What is ESTA and How is it Used to Enter the United States

Quick Summary: ESTA and the Visa Waiver Program

QuestionAnswer
What does ESTA stand for?Electronic System for Travel Authorization
When was ESTA launched?2009
Who can use ESTA?Citizens of 42 countries in the Visa Waiver Program (VWP)
How long can you stay in the U.S.?Maximum 90 days per entry
Can it be extended?No — cannot be extended or converted to another visa
ESTA fee in 2026?$21 (increased from $14 under the 2025 Reconciliation Act)
Where to apply?Only at the official website esta.cbp.dhs.gov
How long is ESTA valid?2 years from approval or until passport expiry, whichever comes first
Can Vietnamese nationals use ESTA?No — Vietnam is not a VWP member country

What is ESTA? Short for “The Electronic System for Travel Authorization” (“ESTA”) Visa Waiver Program is a program of the United States government to facilitate visa-free travel for eligible citizens from participating countries. Launched in 2009, ESTA streamlines the process for visitors entering the U.S. for purposes of pleasure, tourism, or business, provided their stay does not exceed 90 days.  Citizens from eligible countries do not have to apply for a visa to enter the U.S. but instead complete an online application form and pay a small fee to seek approval.  Upon approval, they may travel to the U.S. and request entry for up to 90 days.

Entry Purposes: Pleasure, Tourism, and Business

  1. Entry for Pleasure and Tourism: Travelers visiting the U.S. under the ESTA program typically engage in activities such as sightseeing, visiting friends or relatives, recreational activities, medical treatment (under certain conditions), and participating in social events organized by fraternal, social, or service organizations.
  2. Entry for Business: Business activities permitted under ESTA include attending conferences, meetings, or negotiations, conducting independent research, attending seminars and workshops, participating in short-term training, and other activities directly related to their business or profession.  Temporary entries for business to handle executive level activities of a U.S. company may be allowed, but great care must be taken to avoid activities that might be deemed employment.

Allowed and Prohibited Business Activities

Allowed Activities:

  • Business meetings: Including consultations with business associates.
  • Conferences and seminars: Attending these events relevant to one’s business or profession.
  • Negotiations: Engaging in commercial transactions that do not involve gainful employment in the United States.
  • Research and training: Undertaking independent research or participating in short-term training.

Prohibited Activities:

  • Employment: Any form of gainful employment or work in the U.S. is strictly prohibited under ESTA.
  • Long-term business assignments: Activities that require a prolonged stay or involve establishing a permanent presence to conduct business are not allowed. 

Duration of Stay and Extension

Visitors entering the United States under the ESTA program may be granted a period of stay for up to 90 days. This timeframe is typically sufficient for tourism, short-term business activities, or a combination of both. It’s important to note that the 90-day limit is usually not extendable, and visitors must leave the U.S. before this period expires.

Changing or Adjusting Status

Changing or adjusting a visa status, such as transitioning from visitor to student or worker, or to an immigrant visa category, while in the U.S. under ESTA is not permissible. Visitors must exit the U.S. before their authorized stay expires if they wish to apply for a different visa status, such as a work visa, student visa, or an immigrant visa category. 

What Countries in Asia Qualify for ESTA?

The countries in the Asia-Pacific area whose citizens qualify for the ESTA are:

  • Japan
  • South Korea
  • Taiwan
  • Brunei
  • Singapore
  • Australia
  • New Zealand

The ESTA program serves as a convenient pathway for citizens of participating countries to travel to the United States for short-term purposes of pleasure, tourism, or certain business activities. Understanding the allowed and prohibited activities under ESTA is crucial to ensure compliance with U.S. immigration laws. For longer stays or different purposes, individuals may need to explore other visa options. 

Frequently Asked Questions About ESTA

What is ESTA and who is eligible to use it?

ESTA (Electronic System for Travel Authorization) is the U.S. government’s online pre-travel authorization system for citizens of the 42 Visa Waiver Program (VWP) countries. It allows eligible travelers to visit the United States for tourism, visiting family or friends, or short-term business purposes for up to 90 days without applying for a traditional visa. Applications are submitted at esta.cbp.dhs.gov with a $21 fee and are typically processed within a few hours.

Can Vietnamese and Filipino nationals use ESTA?

No. Neither Vietnam nor the Philippines is a VWP member, so citizens of both countries cannot use ESTA. To travel to the United States for tourism or business, Vietnamese and Filipino nationals must apply for a B-1/B-2 visa at the U.S. Consulate General in Ho Chi Minh City or the U.S. Embassy in Manila. However if you hold a second nationality from a VWP country such as Japan, South Korea, Singapore or Australia and travel on that passport, you may qualify for ESTA subject to eligibility requirements.

How is ESTA different from a U.S. visa?

ESTA is a fast electronic pre-travel authorization for VWP country citizens, approved within hours at a cost of $21, with no interview required. A standard U.S. visa requires an in-person interview at a U.S. Embassy or Consulate, takes longer to process, and costs more, but generally allows a longer stay and more flexibility of purpose. ESTA is capped at 90 days and cannot be extended, while some visa types may be extended through Form I-539 from within the United States.

What is the ESTA fee and where do I pay it?

The current ESTA fee is $21, increased from $14 under the Reconciliation Act enacted in July 2025. Payment is made directly at the official website esta.cbp.dhs.gov by credit or debit card. Never pay for ESTA through a third-party website as these are unauthorized sites that charge significantly higher fees while submitting the identical government application.

How long is ESTA valid and how many times can I enter the U.S.?

ESTA is valid for 2 years from the date of approval, or until your passport expires if that date is sooner. During those 2 years you may enter the United States multiple times. Each individual entry is still subject to a maximum stay of 90 days with no extension available. If you obtain a new passport or change any personal information, your existing ESTA is no longer valid and you must apply for a new one.

If you have question about ESTA or other visas to the U.S.

ENTERLINE & PARTNERS CONSULTING

Ho Chi Minh City, Vietnam Office

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District 2, Thu Duc City
Ho Chi Minh City, Vietnam

Tel: +84 933 301 488
Email: info@enterlinepartners.com
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Copyright 2024. This article is for information purposes only and does not constitute legal advice. This article may be changed with or without notice. The opinions expressed in this article are those of Enterline and Partners only.

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