The UK’s Electronic Travel Authorisation, usually called the ETA, is now one of the most important developments for short-term travel to the UK. For many non-Visa nationals, the old assumption that you could book a flight and travel is no longer safe. The UK government now requires many travellers who do not need a visit visa to obtain digital pre-travel permission before boarding. As of 25 February 2026, non-visa nationals who need an ETA can be barred from entering the UK without one, and the government has also confirmed that the ETA fee will rise from £16 to £20 on 8 April 2026.
What is an ETA?
An ETA is a form of digital permission to travel. It is not a visa, but it is still a mandatory immigration requirement for many travellers coming to the UK for short stays. GOV.UK says an ETA allows travel to the UK for purposes such as tourism, visiting family, and certain other activities for up to 6 months. The key point is that an ETA does not guarantee entry; border officers still decide whether someone can enter upon arrival.
For clients, this distinction matters. Some people hear “authorisation” and assume it works like a fully approved visa. It does not. An ETA is best understood as permission to travel to the border, not a guarantee that you will be admitted into the UK. That means travellers still need to be ready to explain the purpose of their visit, how long they are staying, and whether they are complying with visitor rules.
Why this change matters now
This is no longer a future reform. It is already being enforced. The Home Office announced in February 2026 that, from 25 February 2026, non-visa nationals who try to enter the UK without an ETA will be refused carriage and prevented from travelling unless they are exempt. That makes the ETA one of the most practical travel law changes affecting visitors in 2026.
The scope of the ETA system has also continued to evolve. GOV.UK’s nationality guidance was updated on 5 March 2026, and it specifically states that nationals of Nicaragua and St Lucia can no longer get an ETA. The March 2026 explanatory memorandum confirms that these nationals are now subject to a visit visa requirement, meaning they must apply for and obtain a visa before travel.
Who needs to apply?
Whether a person needs an ETA depends mainly on their nationality and whether they already hold a UK immigration status. GOV.UK publishes a live list of nationalities that can apply. That list currently includes many countries and territories across Europe, the Americas, the Gulf, and Asia-Pacific. However, because the list can change, travellers should always check the current official guidance before booking.
This is especially important for families travelling together. One member of the family may be a visa national, another may qualify for an ETA, and another may already hold UK immigration status and need neither. Confusion often arises when people assume the same rule applies to everyone on the trip. It does not. Immigration planning now starts before the airport, not at the airport.
The fee increase in April 2026
Another practical change is the cost. GOV.The UK currently states that an ETA costs £16, but it will cost £20 from 8 April 2026. The government also warns travelers to avoid unofficial websites that imitate government services and may charge more.
That warning is especially useful for visitors who search online in a hurry. Third-party sites often look official, and some charge large service fees for applications that can be completed directly on GOV.UK. For immigration advisers and law firms, this creates a useful client education point: paying more to a third-party website does not improve the chance of approval.
Common mistakes travellers should avoid
One common mistake is assuming that a person who has visited the UK before can travel the same way again. The legal position may have changed since their last trip. Another is assuming that holding an ETA is enough, even if the traveller intends to do something not permitted under the visitor route. An ETA does not turn an unlawful visit into a lawful one. The visitor rules still matter.
A further problem arises where nationality rules change. The March 2026 changes affecting Nicaragua and St Lucia show that the government may move countries out of ETA eligibility and into the visa-national list when it believes advance scrutiny is needed. The explanatory memorandum says this was done so travellers could be assessed against the Immigration Rules before arrival.
What should travellers do now?
The safest approach is simple. Before booking travel, confirm whether the traveller needs an ETA, a visa, or neither. If an ETA is required, apply early and use the official government route. If there is any complication — previous refusals, uncertain travel purpose, criminal history, overstaying issues, or confusion about whether a visit visa is needed instead — legal advice can save time and money.
For businesses, family members, and frequent visitors, the ETA system is now part of normal travel planning to the UK. It is not an optional extra and not a minor administrative detail. In 2026, it is a front-end immigration requirement that can stop a trip before it begins.