
The cost of spending abroad hides in exchange rate margins and small charges that add up over a fortnight. Choosing the right card matters more than shopping around for cash. Here is where the money goes and which parts of it you can avoid.
Three charges sit between you and the local currency: a foreign transaction fee on each card payment, a withdrawal fee charged by the machine and by your own bank, and the exchange rate your bank applies. The rate is the largest and least visible, because it hides inside the conversion rather than appearing as a line on the statement.
Cards built for travellers usually drop the transaction fee and narrow the margin, which is why they beat a card that takes a percentage of every coffee. Read the terms for the margin rather than the headline fee, because a card advertising no fee can still apply a poor rate.
Accounts that charge a monthly fee normally waive it above a minimum balance or deposit each month, which changes the comparison for a short trip with little spending against a long one with plenty.
When a terminal offers to charge you in your home currency, decline and pay in the local one. The conversion is done by the merchant or the machine at a rate that includes their markup, and your own bank would have converted the same amount more cheaply.
The same prompt appears on cash machines. The offer to convert is written to look like a helpful feature, and it is nearly always the worse option. Choose the local currency every time, then check the receipt to confirm what was actually charged before walking away.
If a terminal converts the charge without asking, the amount is set by the merchant and a later dispute may not recover the difference. Notice the prompt before pressing accept rather than reading the receipt afterwards.
Carry a small amount of local cash for taxis, markets and anywhere that does not take cards, but do not convert the whole budget at once. Airport desks and hotel front desks usually offer the worst rates in the country. A bank branch, or a machine attached to a bank, is generally better.
Take two cards from different networks and keep them apart. One card that is blocked, swallowed or skimmed leaves you with no way to pay, and a replacement takes days to reach you. Note the emergency numbers for both issuers before departure so you are not searching for them abroad.
Cards beat cash on anything expensive, because a card payment can be disputed and cash cannot. Keep notes for markets, tips and small purchases, and use the card wherever a dispute process would be worth having.
Use machines inside a bank lobby or a busy public place, and look at the card slot before inserting anything. A loose fascia, an extra keypad or a camera above the PIN pad are the signs of tampering. Cover the keypad with your hand while you enter the PIN.
Know your daily withdrawal limit and what your bank charges for a foreign withdrawal, including any free allowance each month. Taking more cash fewer times reduces fixed charges but increases what you lose if the money is stolen, so spread the withdrawals across the trip.
Two withdrawals of the same total carry twice the fixed fee, so match how often you visit the machine to what the trip actually costs. A weekly withdrawal near your limit is cheaper than a daily one for smaller notes.
Check whether your bank still wants a travel notice, since many have dropped the requirement and setting one that is not needed can cause confusion. Confirm the PIN works abroad, and carry the number that reaches your bank from overseas without needing mobile data.
Keep the receipts from card payments and compare a few against the statement once you are home. Disputed charges have a deadline, and a payment you do not recognise is far easier to challenge in the first weeks than after two billing cycles have passed.
Keep the banking app updated before you leave, and store the card numbers somewhere you can reach without a signal. Some insurers and rental desks ask for them, and reading a card number over a bad line is not a plan.