Two friends flew to Lisbon on the same flight last October, both convinced they'd sorted their travel money. One had topped up a Revolut account the night before departure; the other had been quietly using Starling as her everyday current account for two years. By the end of the week, the Revolut user had hit her free ATM withdrawal limit on day four and started paying a 2% fee on every euro she took out after that, while her friend withdrew cash from a Lisbon cashpoint on the last day without a single extra charge. Same city, same currency, same rough spending pattern — a genuinely different outcome, and the reason has nothing to do with luck and everything to do with reading past the "no fees abroad" headline on each app's homepage.
The Old Way Was Worse for Everyone
Traditional high-street banks routinely charge a non-sterling transaction fee of around 2.75–2.99% on card purchases abroad, stack a separate cash withdrawal fee of £1.50–£3 on top, and apply an exchange rate that's already been marked up before either of those fees gets added. A £500 holiday spend on a typical high-street debit card could easily cost £15–£20 in fees alone, invisible because they're baked into the rate rather than itemised as a separate line. Airport bureaux de change are worse again — the "0% commission" signage in departure lounges usually just means the commission has been folded into an exchange rate so poor it amounts to the same thing, or more.
Wise: Best for Genuinely Transparent Rates
Wise built its entire reputation on showing the real mid-market exchange rate and charging a small, disclosed conversion fee on top — typically somewhere around 0.4–0.6% depending on the currency pair, rather than baking a hidden markup into the rate itself. Its debit card lets you hold and spend in dozens of currencies at once, converting automatically at the point of sale from whichever balance you've topped up, and free ATM withdrawals run up to £200 a month before a small percentage fee kicks in above that. For anyone who wants to see exactly what they're being charged, line by line, rather than trust that a bank's marketing is telling the full story, Wise is the one to open first — it's the standard the others get measured against, not because it's flashiest, but because it's the hardest one to catch out. The app itself shows the conversion fee as a separate, itemised charge before you confirm a top-up, which sounds like a minor interface detail until you compare it with a high-street bank statement where the markup is invisible because it's already inside the exchange rate applied to the transaction. That transparency has a cost of its own, in a sense: because Wise shows you the real rate and a small honest fee, it can occasionally look more expensive on paper than an app quietly using a worse rate with no fee showing at all, even though the total amount you actually pay is usually lower. Setting up a Wise card takes about ten minutes, including the identity verification most UK fintech apps now require under money-laundering regulations, so it's worth doing well before departure day rather than in an airport queue with patchy wifi.
Revolut: Great in the First Week, Worse After
Revolut's free tier gives generous fee-free spending and a reasonable monthly ATM withdrawal allowance, which is exactly why it's the app most people download the week before a trip. The catch shows up once you're past that allowance: withdraw beyond the free monthly cap and a 2% fee applies, and on weekends the app can switch to a slightly less favourable exchange rate than the one it advertises during the working week, a detail that's disclosed in the terms but easy to miss when you're standing at a cashpoint in a queue. Revolut's paid tiers — Plus, Premium and Metal — raise the free withdrawal limits considerably, and if you travel more than a couple of times a year, the monthly subscription usually pays for itself in avoided fees alone. A single Metal subscription at roughly £14 a month sounds steep next to a free current account, but set against three or four trips a year where the free-tier withdrawal cap would otherwise have been breached on every single one, the maths tends to favour the subscription rather than the free tier people default to. Don't sign up the week before departure and assume the free tier will comfortably cover a fortnight abroad; check the current withdrawal cap for your specific plan first, because Revolut has changed these limits more than once, and the number you remember from a previous trip may no longer be accurate. Family and joint accounts add another wrinkle worth checking, since some of Revolut's group features apply withdrawal limits per account rather than per card holder, which matters if two of you are drawing from the same balance on a shared trip.
Monzo and Starling: The "Already Your Bank" Option
Monzo and Starling both apply the same principle as Wise to their everyday current accounts rather than building a separate travel product: purchases abroad go through at the real exchange rate with no card fee, and both allow a reasonable amount of fee-free cash withdrawal each month — Starling has generally been the more generous of the two on withdrawal limits, with Monzo capping free withdrawals more tightly outside the UK. The genuine advantage here isn't the rate itself, which is broadly comparable to Wise and Revolut. It's that your travel spending is happening on the same account you already use for rent, bills and everyday shopping, so there's no top-up step to forget the night before a flight and no separate balance sitting unused for eleven months of the year.
The trade-off is flexibility. Wise and Revolut let you hold actual foreign currency balances and lock in a rate ahead of a trip if you think sterling is about to weaken — genuinely useful if you're booking a big holiday months in advance and want to hedge against a bad exchange rate on the day. Monzo and Starling convert at the point of spend with no advance-locking option, which is simpler but means you're taking whatever the rate happens to be on the day, whatever that turns out to be.
What Actually Matters for a Two-Week Trip
None of this matters until you're actually standing at the cashpoint.
- Check your specific plan's monthly ATM withdrawal cap before you fly — not the headline "fee-free abroad" claim, which almost never mentions the cap in the same sentence.
- If you're travelling for more than ten days, budget for at least one withdrawal beyond the free allowance on any of these apps, and factor the resulting 2% or so into your holiday budget rather than being surprised by it on day nine.
- Take two cards from two different providers, not two cards from the same one — a blocked or lost Wise card is a genuine problem if Wise is also your only travel money source.
- Top up Wise or Revolut a day or two before departure rather than at the airport gate, because in-app top-ups from a UK bank transfer can occasionally take a few hours to clear.
The friend who used Starling didn't plan any of this out on a spreadsheet beforehand. She just happened to already bank somewhere that treated foreign spending as ordinary spending, rather than as a special case worth charging extra for.