Decision in 30 seconds
Do not choose between cash and card. Carry both, understand every fee layer, and avoid relying on a single instrument.
Thailand’s currency is the Thai Baht. Cards work well at many hotels, malls and larger merchants, while cash remains useful for markets, small businesses and some local transport. The effective cost depends on the exchange spread, card forex markup, ATM charges and whether dynamic currency conversion is accepted.
Side-by-side
What materially changes the decision
| Payment method | Best use | Cost to inspect | Primary risk |
|---|---|---|---|
| Thai Baht cash | Markets, small merchants, local movement | Exchange spread | Loss and over-carrying |
| International credit card | Hotels, malls, larger bookings | Forex markup + issuer terms | DCC and card blocking |
| International debit / prepaid card | ATM access and controlled spending | ATM + issuer + conversion fees | Single-card dependency |
| Tourist e-wallet | Participating Thai QR merchants | Funding, refund and acceptance terms | Assuming universal coverage |
Decision factor
Carry enough cash for friction—not the entire holiday
Estimate cash-first spend by day: local food, markets, small transport, tips and contingency. Exchange a practical initial amount and replenish through an authorised channel when needed. Avoid carrying the full trip budget in one place.
- Separate daily cash from reserve cash
- Keep small denominations available
- Record the exchange receipt where useful
- Do not display or count large amounts in public
Decision factor
Compare the card after all conversion layers
A card’s value depends on issuer forex markup, network conversion, rewards, ATM policy and any merchant surcharge. Check the actual card terms before departure and enable international usage and sensible limits through the issuer’s official channel.
Decision factor
Recognise dynamic currency conversion
A merchant terminal or ATM may offer to convert the transaction into INR. Visa explains that DCC includes its own exchange rate and possible additional fees and that the customer must be given a choice. Compare the displayed terms; paying in THB generally leaves conversion to the card network and issuer instead of the DCC provider.
Decision factor
Treat every ATM withdrawal as a fixed-cost decision
The ATM operator, card issuer and currency-conversion choice can each affect cost. Fewer, planned withdrawals may reduce repeated fixed charges, but carrying more cash increases loss risk. Inspect the screen carefully and retain the receipt.
Decision factor
Use authorised forex channels and check current Indian rules
Reserve Bank of India guidance permits residents to obtain foreign exchange for private travel under the applicable framework, but limits, payment procedures and tax treatment can change. Use an authorised dealer or bank and verify current RBI and issuer guidance for your circumstances.
Evidence desk
Sources and limitations
This is general travel-payment information, not tax, foreign-exchange or financial advice. Confirm current RBI, bank, card, ATM and merchant terms before travel.