Travel money
Travel money in Vietnam: cash or card?
What to expect when you actually pay for things in Vietnam — the currency, how far a card gets you, and the money mechanics that quietly cost travellers more than they realise.
The currency
Vietnam uses the Vietnamese dong (VND), written ₫. The dong is difficult to obtain at a sensible rate outside Vietnam, so plan to arrive with a card and withdraw on landing rather than buying dong at home.
Cash or card?
Cash runs the country outside hotels and city restaurants. Note the denominations: notes run to hundreds of thousands, several are similar colours, and the 20,000 and 500,000 notes are confused often enough that it is worth checking what you hand over.
Getting Vietnamese dong
However you get hold of VND — an ATM, an exchange desk, cash you brought — you will not receive the mid-market rate you see on a converter app. The fee, the spread and your own bank's charges are all folded in somewhere.
The only figure worth recording is your effective rate: the Vietnamese dong you actually received, divided by what your account was actually debited. Value everything you buy from that pile of cash at that rate and the fees are automatically accounted for, spread across your spending instead of sitting in a line item you have to remember. The full method is here.
Always pay in VND, never your home currency
When a card terminal, hotel desk or ATM in Vietnam offers to charge you in your home currency instead of VND, decline. That is dynamic currency conversion, and it hands the exchange rate to the merchant's processor rather than your card network — at a rate that is essentially always worse.
It is offered as a convenience, and a familiar currency does feel safer, which is exactly why it works. Choosing VND is the easiest money you will save on the entire trip.
Your card charge will not match the price you paid
A card payment in Vietnam is authorised in VND on the day, then settled one to three business days later at the rate in force when it clears — plus any foreign transaction fee your bank adds. The number on your statement is decided on a day you may no longer be in the country.
This matters for a budget more than people expect: if you record spending by statement date, purchases drift days forward and can land under the wrong country entirely. Why this happens, and what to do about it.