Most contactless cards issued outside Britain work on every TfL service, and you will almost always be better off tapping your own card than buying an Oyster. The exceptions are worth knowing: TfL bills you in pounds once per travel day, so your bank decides the exchange rate, and no discount of any kind can be attached to a contactless card.
The basic promise is simple. If your debit or credit card shows the contactless symbol, you can use it on the bus, the Tube, the tram, the DLR, the London Overground, most of the Elizabeth line, the London Cable Car, the Thames Clippers river bus and most National Rail services inside Zones 1 to 9. You pay the same fares as a Londoner with an Oyster card, and the same daily and weekly ceilings apply.
What changes for a visitor is everything that happens after the reader beeps: how the charge reaches your bank, what your bank adds, and which savings you quietly forfeit. Our guide to pay as you go, Oyster and the daily caps explains the fare system itself; this page is about the card in your pocket.
Using a non-UK card: the numbers
- Cost of tapping
- Nothing from TfL. Your issuer may add a foreign transaction fee
- How often you are charged
- Once per travel day, after you have finished travelling
- Currency
- Always pounds sterling. The reader never offers you a choice
- Daily cap, Zones 1–2
- £8.90 for an adult
- Weekly cap, Zones 1–2
- £44.70, Monday to Sunday, on the same card
- Oyster card fee if you buy one instead
- £10.50, not refundable
- Discounts available on contactless
- None
Which cards work, and which ones do not
In TfL's own wording, plenty of overseas-issued contactless cards are usable here, with a standing instruction to ask your issuer first. It does not publish a list of banks or card schemes, so there is no way to guarantee a particular card in advance. In practice the mainstream debit and credit cards of most countries work.
Four categories need more thought:
- Prepaid and travel money cards. TfL says a prepaid card may be accepted and tells you to check with the issuer. Some are refused, and because a refusal happens at the gate rather than before your trip, it is not a good card to rely on as your only one.
- A phone or watch linked to a non-UK card. This is the one that surprises people. TfL's warning is that a wallet payment backed by a card from outside the UK might be refused, or might trigger charges for an overseas transaction. Seven wallets are listed as accepted, among them Apple Pay, Google Pay and Samsung Pay, plus Fitbit, Garmin, bPay and Barclaycard's own product.
- Damaged cards. TfL states plainly that a damaged contactless card may not be accepted.
- National Rail and one bus route. Contactless pay as you go on National Rail covers standard class only. It is also not accepted on bus route 477, which is not run by TfL.
Bring a second card in a different pocket. It costs nothing and it solves the problem of arriving at Heathrow at 23:00 and finding the gate will not open, which is when you least want to discover the limits of your bank's rules. Our comparison of the routes in from Heathrow covers the arrival itself.
How TfL actually takes the money
This is the part that makes contactless good value from abroad, and almost nobody knows it. TfL does not charge you at the gate. Its published conditions say the fares for your journeys are charged to your card account after you have finished travelling for that day. Tap fourteen times in a day and you get one charge, not fourteen.
The charge is always in pounds. A card reader at a shop may offer to convert the price into your home currency, which is rarely a good deal; a TfL reader never offers that choice, because the payment is calculated hours later. Your own bank does the conversion, at whatever rate and fee it applies.
On your statement you will see travel charges and, if anything is put right, travel refunds. Two other descriptions turn up. An entry marked TFL.GOV.UK/CP TFL UNPAID FA is money the first attempt failed to collect. Our pages on money in London and card payments in Britain cover the wider rules on spending here.
One charge a day is the whole argument for tapping your own card. If your bank charges a flat fee per foreign transaction, a five-day trip produces five fees, not fifty. Even at £1.50 a time that is £7.50, against £10.50 for an Oyster card you cannot get the fee back on.
What your bank adds, with the sums
We cannot tell you what your card charges, and nobody should guess. What we can do is show how small the numbers are once you know how TfL bills.
Take two adults staying five days in central London, travelling enough each day to reach the Zone 1–2 daily cap of £8.90. That is £44.50 each, £89.00 for the couple. A percentage foreign transaction fee of, say, 2.75 per cent adds about £1.22 per person over the whole trip. Two Oyster cards would have cost £21.00 in non-refundable card fees before a single journey.
The percentage almost never decides it. What can decide it is a flat fee per non-sterling transaction, which some banks apply on top. Because TfL groups a day's travel into one payment, even that stays modest. The card to avoid is one that charges both a percentage and a flat fee and has a poor exchange rate, and the way to find out is to ask your bank before you fly.
If you would rather fix the cost in advance, a Travelcard is the only real alternative, and for most visitors it is worse value than the cap; see our page on Travelcards and when they make sense.
The discount problem, which costs families real money
This is the single genuine reason a visitor might want an Oyster card, and it applies to one specific group.
No discount can be applied to contactless. National Rail puts it flatly: as things stand, no discount can be set against contactless pay as you go. There is no child rate, no railcard rate and no concession rate on a bank card. TfL's discounts live on Oyster cards, and staff have to add them.
For a family that matters in one place. A child under 11 needs no card at all. Buses and trams carry them free without one, and on the rail network the rule is free travel alongside an adult who is paying, with a limit of four such children to each adult. From 11 to 15 they pay the full adult fare on a contactless card. Station staff can instead set a Young Visitor discount on an Oyster or Visitor Oyster card, which takes 50 per cent off the adult rate, fares and ceilings alike, and runs for a fortnight. Bring the child with you to the ticket hall, because they will not do it otherwise.
| One 13-year-old, five days, Zones 1–2 | On a contactless bank card | On a Visitor Oyster with Young Visitor discount |
|---|---|---|
| Daily cap applied | £8.90 | £4.45 |
| Five days of travel | £44.50 | £22.25 |
| Card fee | None | £10.50 plus postage |
| Total | £44.50 | £32.75 |
The saving is real but it is not enormous, and it only exists for the 11 to 15 age group on a trip long enough to pay back the card fee. For everyone else in the family, tapping a bank card is simpler and cheaper. Our pages on children's fares in London and travelling as a family or group go through the age bands, and the Visitor Oyster card has its own review.
Railcards are the other case. Station staff will attach a 16-25, 26-30, Senior, Disabled Persons or HM Forces railcard to an Oyster card, which then takes a third off off-peak travel. None of that works on contactless. If you already hold one, see railcards worth having as a visitor.
Capping only works if you are disciplined
The caps are calculated per card, not per person. Use a plastic card in the morning and a phone in the afternoon and you have two half-days of travel, neither of which reaches a cap. The published conditions are strict about this: one card, every journey, all day, and all week if you want the weekly ceiling.
The weekly cap matters for stays of five days or more, because it works on contactless exactly as it does on Oyster. A Zone 1–2 week is capped at £44.70. The week is fixed, Monday morning to Sunday night, so a Thursday-to-Wednesday trip will never get there. If your dates fall badly, our guide to the zone system explains how the zones you actually use change the ceiling.
Keep other contactless cards away from the reader. If a wallet is held flat against it, the reader may take the wrong card, which breaks the day's capping and can leave two incomplete journeys behind it.
When a payment fails
If your bank declines TfL's request, the amount becomes an unpaid fare. TfL is allowed three further attempts, spaced at most one a day, within a month of the failure, and it will also take the money at your next touch on any reader. Until it is paid, that card will not let you travel.
The two common causes are a card that has expired since you tapped and a fraud block triggered by an unfamiliar merchant. Both are avoidable by telling your bank you are travelling. You can also clear an unpaid fare yourself by signing in to a TfL online account, or by telephone on 0343 222 1234.
Register the card if you want any chance of a refund. TfL is explicit that a card it has no record of cannot be refunded anything. You cannot claim back a wrongly charged fare without an online account holding that card number.
Rules that catch visitors out
- One person per card. A card or device carries exactly one traveller. You may pay for a companion travelling with you only if you pay your own fare with something else.
- Joint accounts are fine. If two of you hold separate cards on the same joint bank account, both work, because each card is charged separately.
- Not everything counts towards the cap. Five services sit outside daily and weekly capping: the two airport expresses to Heathrow and Gatwick, Southeastern's high-speed trains, the Thames Clippers river bus and the London Cable Car. You pay full price for those even after you have capped out. See the river bus and the London Cable Car.
- Cash is no help. Buses do not take cash at all, so a card or an Oyster is not optional; our guide to London buses covers the rest.
- Touch out every time. Missing a touch produces a maximum fare that does not count towards the cap, as our page on forgetting to touch out explains in detail.
Oyster or your own card: how we would decide
Tap your own card if
- You are an adult travelling alone or as a couple
- Your card has a low or no foreign transaction fee
- You are staying a week or less
- You would rather not queue at a machine on arrival
Buy an Oyster card if
- You are travelling with an 11 to 15 year old for several days
- You hold a railcard that can be loaded onto Oyster
- Your bank charges a flat fee on every foreign payment and you want one loaded card instead
- You come to London often and will use the card again
Remember that the £10.50 card fee is not refundable, although leftover credit is; see how Oyster deposits and refunds work for the end-of-trip paperwork.
What to do before you fly
- Ask your bank two questions: what it charges for a payment in a foreign currency, and whether that includes a flat fee.
- Tell it you will be in the UK, so the first tap is not blocked as suspicious.
- Decide on one card or one device and use only that one for the whole trip.
- Pack a second card as a reserve, and keep it somewhere else.
- Create a TfL contactless and Oyster account, or plan to, if you want to see your journeys or claim anything back.
Once you are here, the TfL Go app shows what you have been charged without a trip to a ticket machine; see our round-up of useful London apps. And if you are wondering how much sterling to carry at all, the answer is less than you think: how much cash to bring to London has the detail.
Frequently asked questions
Does a card issued abroad work on the London Underground?
Almost certainly, if it shows the contactless symbol. TfL says a great many cards from abroad can be used across its network, while warning that overseas charges may apply. Ask your own bank what those would be. Carry a second card in case the first is refused at the gate.
Does TfL charge in pounds or in my own currency?
Always in pounds. TfL charges your card account after you have finished travelling for the day, so there is no terminal offering to convert the amount for you. Your own bank performs the currency conversion at its own rate.
How often will the charges appear on my statement?
Normally once for each day you travel, covering all that day's journeys. A payment TfL could not collect at the time may reappear later as an unpaid fare, labelled TFL.GOV.UK/CP TFL UNPAID FA, as much as a month after the journey.
Is an Oyster card cheaper than contactless for a visitor?
Not for adults. The fares and caps are identical, and the £10.50 Oyster card fee is not refundable. The exception is a child aged 11 to 15, because the Young Visitor discount halves fares and caps and can only be added to an Oyster or Visitor Oyster card.
Can my husband and I use the same card on the Tube?
No. Only one person may travel on a card or device. You can pay for someone travelling with you, but only if you pay your own fare with a different card or device. If you have a joint account, two separate cards on that account both work.
Sources
- Transport for London - Pay as you go (checked September 2026)
- Transport for London - Contactless cards and devices: conditions of use (checked September 2026)
- Transport for London - Visitor Oyster card (checked September 2026)
- Transport for London - Fare capping (checked September 2026)
- Transport for London - Adult rate prices 2026 (checked September 2026)
- National Rail - Pay as you go with contactless (checked September 2026)