Money for Bali trip doesn't need to be complicated, but most people get it wrong because they think in hotel rates instead of daily cash flow
Bali runs on a mix of card payments, cash, and a strange gray area where everything is accepted except your actual judgment. I spent three weeks there last year splitting my budget across USD cash, IDR cash, a debit card, and a prepaid travel card because I'd learned from a previous trip that relying on just one system is how you end up stranded at a warung at 11pm with a dead phone and no idea how to pay for an ojek back to Kuta. Here is what I actually spent in 2023, broken down so you can calibrate for your own comfort level. A budget traveler doing hostels, street food, and Grab bikes will spend roughly $40 to $60 per day. Mid-range with private rooms, restaurant meals, and some tours runs $80 to $150 per day. Luxury Villas in Seminyak with spas and fine dining start around $250 per day and go way up from there. Those numbers assume you are already staying in Bali and have flights sorted separately. The thing nobody tells you is that the exchange rate itself is not the real cost driver. The real cost driver is which currency you are paying in at any given moment. If you pull rupiah from an ATM using a bad card, you might lose 5% on the conversion alone. That adds up fast over two weeks. I learned this the hard way at a BCA ATM in Ubud when I tried to withdraw 2 million rupiah and got hit with a dynamic currency conversion prompt that would have charged me nearly 8% extra if I'd clicked the obvious button. I declined and let it process in IDR. Saved about 160 thousand rupiah on a single withdrawal. That is the kind of detail that matters more than whether you pick Canggu or Uluwatu for accommodation.
For most people planning a ten-day trip, carrying around $800 to $1200 in a mix of cash and card flexibility is the sweet spot. You do not need to bring the full amount in cash. I would recommend bringing about $400 to $500 in fresh US bills — twenties are ideal, no tears or heavy creases — to exchange on arrival. The rest should be accessible via card or ATM withdrawals as needed. Exchange booths at Ngurah Rai airport give worse rates than places in town, so exchange just enough for your first night and find a legitimate money changer in Seminyak or Ubud for the rest. I used an exchange booth near Legian Street and got about 16,200 rupiah per dollar compared to roughly 15,400 at the airport. That eight hundred rupiah difference bought me two extra beers and a scooter rental deposit. ATM withdrawals in Bali charge a flat fee of around 65,000 IDR per transaction regardless of your home bank. So pulling $50 versus $200 from the same machine costs you the exact same fee. This means you should withdraw larger amounts less frequently rather than nibbling small sums throughout the day. Combine that with checking whether your home bank reimburses ATM fees overseas — some do, some don't, and it is worth looking into before you go because that 65k IDR fee hits harder when you are already dealing with jet lag and hot weather. Another thing that catches people off guard: many places in tourist areas like Kuta, Seminyak, and Canggu accept cards, but the smaller warungs, local markets, and motorbike taxi drivers do not. You need cash for those. I carried roughly 3 to 5 million IDR in cash at any given time for a two-week trip and used cards for hotels, larger restaurants, and tour bookings. It was enough that I never worried, but not so much that I felt exposed.
If you are traveling for longer than two weeks, the math shifts. You can stretch a budget further by eating local, taking local transport, and skipping the beach club scene. A week of that lifestyle can easily be done for under $500 total including everything except flights. The problem is that most first-time visitors do not actually travel like that because the infrastructure is built to separate you from your money at every turn. Scooter rentals, villa deposits, entrance fees to temples, park tickets, driver fees for day trips — these are all small amounts that stack into something significant by the end of the week. I also ran into a specific issue with my travel card while in Bali. The prepaid card I had loaded with euros would occasionally decline at point-of-sale terminals even though I had balance, mostly because the merchant was running a transaction that triggered a fraud flag from the card issuer back in Europe. I ended up having to call customer service from a hotel landline at one point because my phone had no data and I needed to authorize a payment for a private driver who was waiting outside my villa with my luggage. That took forty minutes. After that I switched to relying primarily on my main debit card plus backup cash and stopped using the prepaid card for anything above $20. Consider bringing a small amount of Singapore dollars as a secondary backup. It exchanges cleanly almost anywhere in Bali and is sometimes easier to move than euros or pounds depending on which money changer you walk into. It is an odd tip but it saved me once when an exchange booth refused to touch my leftover euro notes because they were slightly bent at the corner. The SGD bill went through without a single question.
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One final practical note: do not assume your credit card will work everywhere you expect. Chip and PIN is standard. cards are basically dead. Make sure your cards have chips and that you know your PIN before you board the plane. I watched at least three people at a restaurant in Seminyak struggle with this exact problem while the waiter slowly tapped his watch. Nobody said anything but everyone at the next table could tell.
