How Long Can I Stay in the UK Without a Visa: 6-Month Rule and ETA

Most travelers can stay in the United Kingdom for up to six months without a visa, and that is the answer to how long you can stay in the UK without a visa on a single trip. The precise length is set by the Border Force officer who stamps you in, and since February 2026 you also need an Electronic Travel Authorisation before you board. Irish citizens are the one full exception, with no time limit at all.

The Six-Month Rule

If your nationality doesn’t require a visa for short stays, the ceiling is six months per visit.1GOV.UK. Visit the UK as a Standard Visitor: Overview The clock starts the day you arrive. The officer at passport control can grant you the full six months, grant less, or refuse entry entirely if something about your trip doesn’t add up. An approved ETA doesn’t override that discretion.

Irish citizens are outside this system. Under the Common Travel Area, they don’t need a visa, an ETA, or any immigration permission, and they can live and work in the UK without a time limit.2GOV.UK. Common Travel Area Guidance Section 3ZA of the Immigration Act 1971 gives this statutory backing.3GOV.UK. Common Travel Area

You Need an ETA Before You Travel

Since 25 February 2026, visa-free visitors who don’t already hold UK immigration status must get an Electronic Travel Authorisation before traveling. Without one, you won’t be allowed to board your flight, train, or ferry.4Home Office in the media. Electronic Travel Authorisation (ETA) Factsheet – February 2026

An ETA costs £16 and covers multiple trips over two years, or until your passport expires, whichever comes first.5GOV.UK. Get an Electronic Travel Authorisation (ETA) to Visit the UK: Overview The government has legal authority to raise the fee to £20, but as of mid-2026 it remains £16. US, Canadian, Australian, and non-Irish EU nationals are among those who need one.6GOV.UK. Check if You Can Get an Electronic Travel Authorisation (ETA)

Legal residents of Ireland who hold a visa-free nationality don’t need an ETA when traveling inside the Common Travel Area, as long as they can show proof of Irish residence.4Home Office in the media. Electronic Travel Authorisation (ETA) Factsheet – February 2026

An ETA is not a visa and it does not guarantee entry. It authorizes travel; the officer at the border makes the actual admission decision.

What Border Force Wants to See

Your passport must be valid for the whole of your intended stay. The UK doesn’t require a buffer of extra months beyond your departure date. EU, Swiss, Norwegian, Icelandic, and Liechtenstein nationals can also use a national identity card.7GOV.UK. Entering the UK: Before You Leave for the UK

Beyond the document itself, the officer needs to be satisfied that you’re a genuine visitor. Have three things ready:

  • Evidence you can fund your stay without working or claiming benefits. There is no fixed daily amount; officers judge each case against the length of stay and accommodation.8GOV.UK. Visit Guidance
  • A return or onward ticket showing you plan to leave.
  • Accommodation details, whether a hotel booking, an Airbnb confirmation, or a letter from the person hosting you.

Refusals coded “A1 — insufficient funds for proposed visit” are common enough that bank statements or proof of employment are worth keeping accessible, even if the officer never asks.8GOV.UK. Visit Guidance

What You Can and Can’t Do on a Visit

The visitor rules cover more than tourism. During a standard visit you can:

  • Sightsee and visit family and friends.
  • Attend business meetings, conferences, seminars, and job interviews, and negotiate or sign contracts.
  • Study for up to six months at an accredited institution, including English language courses.9GOV.UK. Visit to Study
  • Volunteer for a registered charity for up to 30 days.
  • Do incidental remote work for an employer based abroad, provided it isn’t the main reason for the visit. If your ability to afford the trip depends on working remotely, officers may treat the work as the primary purpose and refuse you.

A narrow “permitted paid engagements” route lets a small group of invited experts, such as artists, professional sportspeople, qualified lawyers, lecturers, and academic examiners, receive UK payment for specific activities within the first month of the visit.10GOV.UK. Visit for a Paid Engagement or Event

What you cannot do as a visitor is where people get into trouble. No paid or unpaid employment, including au pair work. No starting or running a business, and no selling goods or services directly to the public. No work placements or internships. No claiming public funds. No sham marriages.8GOV.UK. Visit Guidance

Can You Extend Past Six Months?

Usually, no. Extensions are limited to a short list of situations:11GOV.UK. When You Can Extend Your Stay

  • Private medical treatment. You can apply for a further six months if you’ve paid for the treatment received and can cover what’s ahead. There’s no cap on how many times you can extend for this reason.
  • Academics initially granted less than 12 months, up to 12 months total.
  • PLAB test candidates, up to six months more, or up to 18 months total for unpaid clinical attachments after passing.

There is no general extension for tourism or family visits. If none of the categories fits, leave before your permission expires.

What Overstaying Costs You

Leaving voluntarily within 30 days of your permission expiring is generally disregarded and won’t trigger a mandatory entry ban.12GOV.UK. Mandatory Refusal Period (Accessible) After that, mandatory bans kick in:13GOV.UK. Mandatory Refusal Periods

  • One year, if you left voluntarily at your own expense.
  • Two years, if you left voluntarily at public expense within six months of being notified of removal liability.
  • Five years, if you left voluntarily at public expense more than six months after that notification.
  • Ten years, if you were forcibly removed or used deception in an immigration application.

Even short of a formal ban, an overstay stays on your immigration record. Future visa applications of any kind ask whether you’ve ever breached immigration conditions, and the Home Office already has the data to check your answer.

Coming Back for Repeat Visits

The UK doesn’t set a Schengen-style “90 days in 180” cap. There’s no fixed number of days you’re allowed within any 12-month window. That said, stringing back-to-back six-month trips together is not a workaround.

Officers are trained to look at the whole pattern. The Home Office guidance tells them to weigh:8GOV.UK. Visit Guidance

  • The number and length of visits in the past 12 months.
  • Whether you spend more time in the UK than in your home country.
  • Whether trips home look like brief resets rather than real returns.
  • The strength of your ties abroad, including work and tax registration.
  • Signs you’re treating the UK as home, such as registering with a GP or enrolling children in UK schools.

The guidance is explicit: if travel history shows someone is seeking to remain for extended periods or make the UK their home, officers should refuse entry. Leave real gaps between trips, keep your ties to your home country visible, and don’t assume that staying under six months each time is enough on its own.

The Tax Residency Trap

Long or repeated visits can pull you into UK tax residency, which brings tax on worldwide income. The Statutory Residence Test has a bright line: 183 days or more in the UK during a single tax year, running 6 April to 5 April, makes you automatically resident.14GOV.UK. RDR3: Statutory Residence Test (SRT) Notes

Below 183 days, you can still be caught by the “ties” rules. Having a UK home, a spouse or partner here, children in UK schools, or more than 90 days in either of the previous two tax years all count as ties, and the more you have, the fewer days it takes.15GOV.UK. Statutory Residence Test (SRT): The Ties Test: 90-Day Tie If you’re making repeat long visits, especially with remote work in the mix, run the numbers before your next trip.