Almost every single place here has a QR code where you can pay. Even if you are buying something for less than $1. So, the 2 best options: - Short term: Pay with ByBit directly (yes, it's compatible with the Vietnamese QR codes) - Long term: Go to any bank with your passport (Vietcom bank is a good easy option) and open an account. Then you can top it up via bank transfer or crypto.
You'll want to carry cash in Chiang Mai and smaller Thai towns because plenty of vendors, markets, and landlords simply don't accept cards; I'd say about sixty percent of my monthly expenses require physical baht, especially for rent, street food, and local transport, so while cards work fine at malls and tourist spots, your daily life runs smoother with a mix of both, and the ATM fees are low enough that regular withdrawals beat the stress of running short on cash in a place where not every shop has a functioning card reader.
Most travellers hear that UPI works everywhere in Cambodia, but that's overstated. Yes, some merchants accept it through KHQR codes, yet you'll still encounter places without digital infrastructure, particularly outside Phnom Penh and Siem Reap. Grab and local apps like Wing Money are far more reliable for daily use; Grab works for rides and food delivery across the country, whilst Wing handles transfers and bill payments. I'd recommend having a mix: some Cambodian riel from an ATM using your home card (fees are reasonable), a Grab account loaded with cash, and your phone for digital payments. The infrastructure's improving, but don't rely solely on UPI or assume every vendor's equipped. Download Grab before you arrive, get a local SIM card for connectivity, and keep small cash for markets and temples. It's less about cutting-edge payment tech and more about having realistic backup options.
Most Southeast Asian towns run on cash despite what travel blogs suggest; you'll find ATMs readily enough, but many small vendors, markets, and transport operators don't take cards, so you'll need local currency on hand. Exchange rates are generally better at ATMs than airports or money changers, though it's worth comparing a few options since margins vary. A realistic monthly budget for a single person sits around 15,000 baht (roughly 500 AUD) if you're living like locals and avoiding tourist areas; families should budget closer to 25,000 baht. Cards work fine in cities and larger establishments, but in smaller towns you'll find yourself visiting ATMs more often than you'd expect, so I'd suggest withdrawing amounts that cover a week or two rather than daily trips. Keep some cash separated from your main stash just in case; it's old advice but it works.
Vietnam's official exchange rate sits around 26,500 Vietnamese Dong per US dollar, but the street rate often hovers within 1-2 percent of this figure, which is considerably tighter than what you'd see back home between official and black-market rates in India. The data here shows conversions at approximately 26,325 VND per dollar, indicating the official benchmark was used. Kindly note that major banks and ATMs in Vietnam typically offer rates within 0.5-1 percent of the official rate, making them reliable options; I've found that withdrawing cash directly from ATMs (BIDV, Vietcombank, or international networks like HSBC) gives better rates than exchanging at airports or street vendors. The spread between official and street rates in Vietnam is genuinely minimal compared to other Southeast Asian countries, so you won't see the dramatic 5-10 percent differences you might encounter elsewhere. If you're earning in USD on a work visa like I do, the stability here is refreshing—no need to rush into conversions due to rate volatility. For long stays, I'd recommend opening a local Vietnamese bank account once you have proper documentation; domestic transfers bypass exchange rate concerns entirely, and the account itself costs nothing to maintain.
When exchanging US dollars for Vietnamese dong in Vietnam, it seems the official rate has remained relatively stable over the past year. The average rate during this period appears to be approximately 26,300 dong per dollar; however, rates fluctuate daily.Street rates may differ from official bank rates, and perhaps it would be prudent to compare rates across multiple banks or authorized exchange services before conducting larger transactions.
Most ATMs here accept foreign Cards without problems, including Wise and Revolut which is very good option. The important thing is when machine asks you about Currency Conversion at the end, you must always decline and choose to be charged in VND instead. The ATM's conversion rate is always worse than your own Bank's rate, so you lose money if you accept it. Just withdraw VND directly and let your Bank handle the conversion, you get much better Deal that way.
Most travellers don't realise that credit and debit cards have limited acceptance across Southeast Asia, and ATM withdrawals hit you with terrible exchange rates and high fees—similar to how forex counters back home charge a premium. Local payment apps are genuinely your best option, but here's the catch: many popular ones won't accept foreign cards at all, or they'll charge you 3-5% conversion fees that add up quickly. The smart move is using apps like LocalPay or GrabPay, which allow you to link your international debit or credit card directly and scan QR codes at merchants with minimal fees—typically under 1%. This costs significantly less than withdrawing cash and losing money on the exchange, and it's far more convenient than carrying large amounts of currency. I've found that most restaurants, shops, and even street vendors in Vietnam and Thailand accept QR payments now, so you're not limited to formal establishments.
The official mid-market rate for Vietnamese dong to USD currently sits around 26.300 though this figure represents the theoretical inter-bank rate you will not actually receive. In practice, banks and authorised money changers apply a markup ranging typically from 1 to 3 percent, meaning your actual rate will be noticeably lower. Street money changers in major tourist areas often advertise rates that appear competitive but frequently employ sleight-of-hand tactics, poor scales, or currency that has been mixed with lower denominations, so the apparent rate advantage disappears entirely.
Stick to ATMs inside banks or shopping centres during daylight hours; skimming happens more often than you'd think at standalone machines. If something does go sideways, head straight to the nearest police station and get a written report—you'll need it for insurance claims or card disputes. In remote border areas, particularly near Pakistan, Myanmar, Laos, Vietnam, and Russia, armed bandit activity's a real consideration, so do your homework before heading that direction. It's the unglamorous stuff that keeps trips from becoming disasters.
