I watched a cousin from Boston try to pay for a coffee in Belfast with a twenty-euro note last summer. The barista was patient—Belfast gets plenty of confused visitors—but the queue behind her was not. That is the moment I realised most first-timers do not think about money as a planning item. They think about flights, hotels and the Cliffs of Moher. Then they land, order their first breakfast, and discover the practical stuff is where the friction lives.
The Euro Is the Only Currency You Need in the Republic
The Republic of Ireland is in the eurozone. Prices are marked in euro, tills ring up in euro, and taxi drivers expect euro. Notes come in €5, €10, €20, €50, €100 and €200 denominations, though you will rarely see anything larger than a €50 in everyday use. Coins run from 1 cent to €2. The smallest coins are increasingly irrelevant because contactless payments have taken over, but they still turn up as change and are useful for car-park ticket machines that have not joined the twenty-first century.
You do not need to arrive with a wallet full of euros. I have seen cousins order currency from their home bank, pay a markup, carry it across the Atlantic, then use an ATM anyway. The simplest approach is to withdraw a small amount at the airport on arrival and pay for everything else with a card. If your bank charges foreign-transaction fees, look into a card that does not, or accept the fee as part of the trip cost. Either way is usually cheaper than airport bureau rates.
One more thing on notes. Irish businesses can be reluctant to accept €200 and €500 notes because of counterfeiting worries and the difficulty of making change. Stick to €50s and below. If an ATM dispenses a €100 note, break it at a supermarket or petrol station rather than walking into a tiny village café with it. And if you are wondering what else belongs in your pocket besides cash and cards, my season-by-season packing list for Ireland covers the wallet, the adaptor and the rain jacket in one place.
Cards Work Almost Everywhere — With One Catch
Ireland has quietly become a card-first country. Contactless limits are generous—usually €50 per tap, sometimes higher—and most readers accept Apple Pay and Google Pay. Supermarkets, petrol stations, restaurants, hotels and even many food trucks will take a card. The catch is the edge cases: a rural pub that only takes cash for a round of pints, a seaside car park with a coin-only meter, a small farmer's market stall, or the odd B&B that prefers cash for the balance.
My advice is simple. Carry one debit card for ATM withdrawals, one credit card for purchases, and about €80 to €100 in cash for the places that still live offline. Keep a few coins for parking meters in small towns. If you are driving the Wild Atlantic Way or the back roads of Connemara, that cash will save you more than once. And tell your bank you are travelling. A blocked card at a remote petrol station is a bad way to start an afternoon.
Mobile wallets are genuinely useful here. Apple Pay and Google Pay work on most readers, and they often have higher contactless limits than a physical card. They also solve the problem of a card with a worn magnetic stripe. Just make sure your phone is charged before a long day out, because a dead phone at a car-park payment machine is its own kind of stress.
Tipping Is Not the Same Game as at Home
This is where a lot of cousins overthink it. In Ireland, tipping is appreciated but not expected. Restaurant staff earn a living wage, so a 20% tip is not the norm. Round up the taxi fare to the nearest euro, leave a euro or two for breakfast service in a hotel, and add 10% in a sit-down restaurant if the service was genuinely good. Some restaurants include a service charge on the bill for larger groups, so check before you double-tip.
At the bar, do not tip when you order drinks. It is not rude; it is just not the custom. If you want the full picture, I have written a separate guide on tipping in Ireland, including how to handle pubs, restaurants, hotels and tour drivers without looking like you have just stepped off a cruise ship.
Hotel porters and housekeeping fall into the same soft category. A euro or two for bringing bags upstairs is fine; leaving a few euros for housekeeping at the end of a stay is appreciated but optional. Tour guides do not expect a percentage, though rounding up or adding €5 to €10 for a full-day guide is a kind gesture if the day was exceptional.
Northern Ireland Uses a Different Currency
Cross the border into Northern Ireland and the euro stops working. Northern Ireland is part of the United Kingdom and uses pound sterling. Banknotes there are issued by local banks and look different from Bank of England notes, but they are still pounds sterling and spendable anywhere in the UK. If you arrive in Belfast with only euros, you will need to change money or use a card.
Cards solve most of this problem. A Visa or Mastercard will handle the currency conversion automatically. Some shops near the border accept euros at poor exchange rates, and a few tourist spots quote dual prices, but do not rely on it. If your itinerary includes the Giant's Causeway, the Causeway Coastal Route or a night in Belfast, plan to have some sterling or use a card with no foreign-transaction fee. For the driving side of crossing the border, including insurance and what your rental covers, see my guide to taking a rental car from Ireland to Northern Ireland.
If you are planning to criss-cross the border several times, do not bother converting large amounts of cash each time. Use a card and let the bank sort the currency. Some Northern Irish shops near the border will accept euro out of courtesy, but the rate is rarely in your favour. Treat it as an emergency option, not a strategy.
ATMs and Currency Exchange — The Practical Bits
ATMs are easy to find in towns and cities. They usually offer the best exchange rate you will get as a visitor, even after your bank's fee. The machines at Dublin Airport and Shannon Airport work fine, but so do the ones at any bank branch in a town centre. Avoid independent ATMs in convenience stores and tourist traps that charge their own withdrawal fee on top of everything else. Those fees are often hidden behind a friendly-looking screen.
When the ATM or card terminal asks whether you want to pay in your home currency, say no. This is dynamic currency conversion, and the rate is almost always worse than what your own bank gives you. Choose euro in the Republic and sterling in Northern Ireland. The same rule applies in restaurants and shops that offer to charge your card in dollars. Decline politely and let your bank do the conversion.
Most Irish bank ATMs belong to AIB, Bank of Ireland, Permanent TSB or Ulster Bank. They do not charge their own withdrawal fee, though your home bank might. Independently operated ATMs in pubs, shops and tourist areas almost always add a fee, sometimes €2 to €3 per withdrawal. Read the screen before you confirm. The same caution applies to currency-exchange bureaux in airports and city centres: their advertised 'no commission' rate is usually made up for in a poor exchange rate.
The One Money Mistake I See Every Year
It is not carrying too little cash. It is carrying only one card. Cards get swallowed by finicky machines, flagged for fraud, lost, or demagnetised by a phone in the same pocket. I have had cousins miss a dinner reservation because their single debit card stopped working and they had no backup. Bring two cards from different issuers, keep them in different places, and make sure someone else on the trip knows the PIN for at least one of them.
The second-most-common mistake is ordering too much foreign currency before leaving home. A small emergency stash is fine, but walking around Dublin with hundreds of euros in cash is unnecessary and risky. Ireland is not a cash economy. Use the ATM, use the card, and save the cash for the moments when technology fails you.
The third mistake is assuming every card works the same way. Some US debit cards require a signature rather than a PIN, which confuses Irish card readers trained for chip-and-PIN. Credit cards tend to be smoother. If you have a choice, use a credit card for purchases and a debit card only for ATM withdrawals. And check whether your card has a daily foreign withdrawal limit that might leave you short at the wrong moment.
What This Means for Your Self-Drive
Money and driving are more connected than most visitors realise. You will pay for petrol, parking, tolls, ferries and the occasional castle car park. Petrol stations almost always take cards, but a few rural pumps still want a card with a PIN or cash inside. Parking apps are common in cities, but small coastal towns often want coins or a card at a single machine. Tolls are mostly barrier-free and camera-based, which is a headache if you are trying to pay them manually afterwards. For the rules of the road before you set off, my guide to driving in Ireland tips covers the signs, speeds and left-side habits that catch first-timers out.
This is where My Irish Cousin takes one thing off the table. The toll device is already in the car, and every toll charge is covered at no extra cost. You do not need to fumble for change on the M50 or remember to pay online before midnight. For the full picture on how tolls work, have a look at my guide to toll roads in Ireland. If you are still building the rest of your trip, the Ireland travel tips for first-timers hub pulls together the practical side of driving, packing and planning in one place.
On the subject of deposits, most rental companies in Ireland will hold a significant amount on your credit card at pickup, sometimes €1,500 to €3,000, and release it only after the car is returned undamaged. That hold can tie up your available credit for days or weeks. My Irish Cousin does not take a deposit on a credit card—just a €1 pre-authorisation—and covers the excess so you are not out of pocket if something happens. It changes how relaxed you feel about narrow gates and tight village parking.
Get the money side right and the rest of the trip opens up. You will stop worrying about whether the pub takes cards and start paying attention to the conversation, the music and the road home. That is the part that matters.
