Nothing derails a travel budget faster than currency mistakes — a bad airport exchange rate, an ATM fee that eats 5% of every withdrawal, or a merchant who quietly marks up your credit card conversion rate. Asia is a patchwork of currencies, card acceptance levels, and digital payment cultures that vary enormously from one border to the next. This guide breaks down exactly how to handle money across the region's major destinations, country by country, so you're never caught paying more than you need to.
The Golden Rule: Never Exchange at the Airport
Airport currency counters almost universally offer the worst rates of any option available to you, often 8-15% below the interbank rate. They rely on captive travellers who need cash immediately and have no easy alternative. The better options, in order of preference, are: withdrawing from a local ATM using a fee-free travel card, exchanging a small amount at a reputable city-centre money changer (Singapore's Little India and Arab Street changers, for instance, are known for near-interbank rates), or using a digital wallet where accepted.
ATM Withdrawals: What Singapore Cardholders Need to Know
DBS, OCBC, and UOB all charge foreign transaction fees on overseas ATM withdrawals, typically a flat fee plus a percentage, and the receiving country's ATM operator often adds its own withdrawal fee on top — sometimes disclosed, sometimes not. The practical fix used by most frequent travellers is a dedicated multi-currency travel card such as Wise or Revolut, which offer near-interbank exchange rates and significantly lower (often zero, up to a monthly limit) withdrawal fees compared to a standard Singapore bank card used abroad.
Credit Card Acceptance by Country
Visa and Mastercard are broadly accepted across hotels, malls, and larger restaurants throughout the region. American Express acceptance drops sharply outside 5-star hotels and international chains — many smaller merchants across Southeast Asia simply don't carry Amex terminals due to its higher merchant fees. Japan and South Korea have excellent card infrastructure in cities but can still surprise travellers with cash-only smaller restaurants, temples, and rural areas. China is increasingly QR-code-first even over cards for in-person purchases.
Digital Wallets: The Real Payment Layer in 2026
China: WeChat Pay and Alipay
In China, digital QR payment isn't just convenient — it's often the only accepted method outside major hotels. Set up the tourist versions of WeChat Pay or Alipay, both of which now link directly to a foreign Visa or Mastercard, before you arrive.
Southeast Asia: GrabPay
GrabPay works across Singapore, Malaysia, Thailand, Indonesia, Vietnam, and the Philippines for rides, food delivery, and an expanding range of retail merchants.
Singapore and Thailand: PayNow and PromptPay QR
These bank-linked QR systems are extremely popular locally but generally require a local bank account to register — as a visitor you'll mostly encounter them being used by locals around you rather than using them yourself, unless you have a resident host splitting a bill.
Tipping Culture: A Country-by-Country Minefield
Tipping norms in Asia vary from "actively offensive" to "expected and appreciated," and getting it wrong in either direction is a common tourist misstep.
- Japan: Never tip. It can be seen as confusing or even insulting — excellent service is simply the cultural standard, already reflected in the price.
- South Korea: Also generally not expected; rounding up at casual venues is fine but not required.
- Singapore: Not customary; most restaurants include a 10% service charge on the bill already.
- Hong Kong: Small tips (rounding up a taxi fare, small change for hotel staff) are appreciated but not mandatory.
- Thailand: Modest tipping (20-50 baht) is appreciated at restaurants and for good service, though not strictly required.
- Indonesia: Rounding up or 10,000-20,000 IDR for good service at restaurants is common practice in tourist areas.
- India: Around 10% at restaurants is standard practice, and small tips for porters and drivers are expected.
- China: Not customary and can occasionally be refused or cause confusion outside international hotels.
Bargaining: Where It's Expected vs Where It's Not
Haggling is a genuine cultural skill in some markets and a social misstep in others. Street markets, tuk-tuks, and non-metered transport across Thailand, Vietnam, Indonesia, and Cambodia are typically open to negotiation, often starting 30-50% above the "real" price for tourists. Fixed-price retail, malls, supermarkets, and anything with a printed price tag in any country is not a bargaining context. Japan, South Korea, Singapore, and Hong Kong all generally have fixed pricing even in markets, and attempting to haggle can come across as disrespectful rather than savvy.
Cash-Only Situations to Prepare For
Even in highly digital markets, certain situations remain reliably cash-only: street food stalls and hawker centres in most countries, small rural temples and shrine donation boxes, some public restrooms requiring small coin payment, tuk-tuks and unmetered taxis outside major apps, and small guesthouses in rural or island locations. Always carry a modest amount of small-denomination local cash even in cities that feel thoroughly cashless.
Currency Exchange Scams to Avoid
- Street "money changers" outside official storefronts offering rates significantly better than banks — a classic short-change or counterfeit-note setup.
- Rigged calculators or deliberately confusing rate boards at unlicensed exchange counters in tourist-heavy areas.
- Dynamic Currency Conversion at card terminals defaulting to your home currency at an inflated rate — always select the local currency option.
- Unofficial "helpful" locals offering to exchange currency directly, particularly common near border crossings.
Complete Currency & Payment Comparison Table
| Country | Currency | Card Acceptance | Digital Wallet | Tipping | ATM Fee Note |
|---|---|---|---|---|---|
| Singapore | SGD | Excellent | PayNow (local) | Not required | Low, local banks fine |
| Japan | JPY | Good in cities, cash rural | PayPay (local) | Never tip | Use 7-Eleven ATMs |
| Hong Kong | HKD | Excellent | Octopus card | Optional small | Low fees generally |
| China | CNY | Limited outside hotels | WeChat Pay/Alipay essential | Not customary | Use travel card, avoid local bank fees |
| South Korea | KRW | Excellent | Kakao Pay (local) | Not expected | Widely available, low fee |
| Thailand | THB | Good in cities | PromptPay (local) | 20-50 baht appreciated | High flat fee per withdrawal |
| Indonesia | IDR | Moderate | GoPay/OVO | 10-20k IDR appreciated | Moderate fees, use major banks |
| Vietnam | VND | Moderate | MoMo (local) | Small tips appreciated | Moderate fees |
| Malaysia | MYR | Good | GrabPay/Touch n Go | Not required | Low fees |
| Cambodia | USD widely used | Limited | ABA Pay (local) | Small tips appreciated | USD ATMs common |
| Philippines | PHP | Good in cities | GCash | Rounding up common | Moderate fees |
| India | INR | Good in cities | UPI (needs local number) | ~10% at restaurants | Low, use major bank ATMs |
SGD or USD: Which to Carry as Backup Cash?
For most Southeast Asian destinations, USD remains the most widely recognised and exchangeable backup currency if you want physical cash as a fallback, particularly in Cambodia where USD is used interchangeably with riel for larger transactions. SGD is well recognised in neighbouring Malaysia and parts of Indonesia and Thailand near the Singapore travel corridor, but exchanges less favourably once you're further from those borders. A small amount of USD in $20 and smaller notes (large or old notes are sometimes refused) is a sensible universal backup across the region.
What to Do With Leftover Currency
Exchange counters in Singapore's Changi Airport and city-centre money changers will buy back most major Asian currencies at reasonable rates on your return, particularly Thai baht, Japanese yen, and Hong Kong dollars. For smaller amounts of less common currency (Cambodian riel, Vietnamese dong in small denominations), it's often not worth the exchange fee — donate it, spend it on last-minute airport snacks, or keep a note as a souvenir for a future trip back.
Money logistics are rarely the exciting part of trip planning, but getting them right quietly saves hundreds of dollars across a multi-country itinerary — money far better spent on the next meal, ticket, or experience than lost to a bad exchange counter or an avoidable ATM fee.
