In Vietnam, foreign currency may legally be exchanged only at licensed credit institutions, meaning banks and their branches, and at foreign exchange counters authorised by them, such as the counters at international airports, in some hotels and at certain businesses displaying an authorisation. Exchanging cash with an unlicensed gold shop, a jewellery store or a private person may offer a slightly better rate, but it breaks the foreign exchange rules, and both the buyer and the seller can be fined. Selling foreign currency for dong is straightforward; buying foreign currency is more restricted and usually requires a stated purpose and documents.
This guide explains how currency exchange is regulated, where you can change money safely, how to compare rates without being misled, and why the receipts you collect now can matter years later when you want to move money out of the country. It does not quote rates or recommend specific businesses. Rates change daily, and the State Bank's rules are updated from time to time, so check before large transactions.
Why exchange is regulated so tightly
Vietnam manages its currency closely. The State Bank of Vietnam sets a central reference rate each day and allows banks to trade within a band around it, and it has long tried to reduce the use of US dollars and gold as substitutes for the dong in everyday life, a phenomenon economists call dollarisation. One tool is the rule that buying and selling foreign currency must go through licensed channels, so that flows can be monitored. Another is the general ban on pricing and paying for goods in foreign currency inside the country.
For decades, however, many people exchanged money informally, especially at gold shops, which often offered slightly better rates than banks and asked no questions. That habit has not disappeared, and newcomers may be told by friends or taxi drivers that a particular shop gives the best rate. The legal position is clear: unless a business is an authorised exchange agent, buying or selling foreign currency there is a violation, and authorities have fined individuals who did so. A widely reported case in 2019, in which a person was fined after changing a small amount of US dollars at an unlicensed gold shop, made national news and reminded residents that the risk falls on customers as well as on shops.
For a foreigner whose visa and residence depend on staying on the right side of the law, the small gain on the rate is not worth it.
Where you can change money
The options below are the legal ones. Rates and convenience vary, so it is worth knowing all of them.
| Place | Good for | What to expect |
|---|---|---|
| Bank branches | Selling foreign cash for dong; buying foreign currency when you have a valid purpose | Passport required; queues at busy times; rates posted inside and on the bank's website |
| Authorised exchange counters | Small amounts on arrival, quick exchanges in tourist areas and hotels | Must display an authorisation; rates vary and may be less favourable at airports |
| Your own bank account | Converting money received from abroad into dong | Done inside your account or app; no cash handling; creates a clear record |
| ATM withdrawals with a foreign card | Getting dong without exchanging cash at all | Your home bank converts; watch for fees and refuse on-screen conversion |
Notice what is missing from the table: gold and jewellery shops without authorisation, market traders, taxi drivers, hotel staff acting privately and people who approach you on the street. Any of these may offer to change money. All of them expose you to fines, counterfeit notes or short-changing, and none gives you a receipt you can use later.
Selling foreign currency: the easy direction
Converting foreign cash into dong is the simplest transaction. At a bank you hand over the notes with your passport, the teller checks them, and you receive dong with a receipt. Banks look closely at the condition of foreign notes. Torn, heavily marked, very old series or stained US dollar notes may be refused or accepted at a lower rate, and larger denominations sometimes receive a slightly better rate than small ones. If you are bringing cash from home, ask your bank there for clean, recent notes.
If your money arrives as a transfer into a foreign currency account in Vietnam, you can convert it to dong inside the bank, often in the app. This avoids carrying cash at all and creates an electronic record linking the money to your account, which is useful for both tax and later outward transfers.
Small amounts for the first day, enough for a taxi and a meal, can reasonably be changed at the airport. For anything larger, waiting until you reach a bank branch in town normally gives a better result.
Buying foreign currency: the harder direction
Buying US dollars, euros or other currencies with dong is more restricted, because it is the direction in which money can leave the country. Individuals generally need a legitimate purpose recognised by the regulations, such as paying for study or medical treatment abroad, travel, supporting relatives abroad, or, for foreigners, transferring legal income earned in Vietnam out of the country. Banks ask for supporting documents and set limits per purpose; for travel cash the amounts are modest and usually require proof of an upcoming trip.
For foreign residents the most common reason to buy foreign currency is to send savings home. In that case, the bank will typically want to see where the dong came from: an employment contract, salary records in the same account, and evidence that tax on the income has been paid. The process is covered in more detail in a separate guide on sending money out of Vietnam. The key point here is that you cannot simply walk into a bank with a bag of dong and buy dollars for any reason; the purpose and the paper trail matter.
This is another reason to avoid informal exchange. Dollars bought at a gold shop come with no record, cannot be documented, and do not help you if a bank or customs officer asks how you obtained them.
Bringing money from home before you arrive
The cleanest way to move money for a long-term stay is to plan the first few months before you arrive. Keep enough in your home account, accessible by a card with low foreign fees, to cover the period until your Vietnamese account is open and working. Bring a modest amount of cash in clean notes as a reserve, declaring it at customs if it is above the threshold. Once your local account is open, move larger amounts by bank transfer or through a regulated money transfer service, rather than carrying cash or exchanging large sums at counters.
Think about the order of conversions too. If your income is in pounds, euros or Australian dollars, you rarely need to pass through US dollars first. Ask both your home bank and your Vietnamese bank which currencies they can send and receive directly, and compare the total dong you would end up with for a test amount. Many residents find that a regulated transfer service sending directly to their Vietnamese account gives a clearer result than either bank's standard international transfer.
Finally, keep the paperwork from these first transfers. They are the start of the record that shows your money came into Vietnam legally.
Changing money back when you leave
Leaving Vietnam for good raises the reverse problem: what to do with dong you still hold. The dong is not widely traded abroad, so exchange it before you go rather than taking a pile of notes home. Spend down cash in the last weeks, and settle bills and deposits by transfer so that money lands in your account rather than your pocket.
Converting a balance back into foreign currency to take or send home is a purchase of foreign currency, which, as described above, requires a legitimate purpose and documents. For foreign workers the usual basis is legal income from employment, supported by the labour contract, salary records and proof that tax has been settled, often including a tax finalisation for the final year. Start this process weeks before your flight, not on the last day, because banks may need time to review documents.
Small amounts of leftover cash can be changed at the airport's authorised counters, within the limits they apply. Keep the receipts, since you may be asked to show them at departure if you carry foreign cash above the declaration threshold.
Getting a fair rate without breaking the rules
Compare the buying and selling rates. Every bank posts two figures: the rate at which it buys a currency from you and the rate at which it sells. The gap between them is the bank's margin. Comparing the gap between a few banks tells you more than comparing headline numbers.
Check cash and transfer rates separately. Banks often publish different rates for cash and for transfers. If your money arrives by transfer, the relevant figure is the transfer rate, which is often better than the cash rate.
Ignore zero-commission promises. An exchange counter advertising no commission may simply build its margin into the rate. Ask how many dong you will receive for a given amount and compare the final figure.
Avoid converting twice. Changing your home currency into dollars before coming, and then dollars into dong, means paying two margins. If your bank at home and your bank in Vietnam handle your currency directly, a single conversion is usually cheaper.
Time large conversions sensibly. Rates move, but trying to time the market rarely pays off for individuals. Converting regular amounts each month, roughly in line with spending, smooths out swings without guesswork.
Records worth keeping
Exchange receipts and transfer confirmations seem like clutter, but they become important evidence in a few situations. Keep them in a folder or scanned on your phone.
- Customs declarations for cash you brought into Vietnam, needed if you later take foreign cash back out above the threshold.
- Bank exchange receipts showing that foreign currency you hold was bought legally.
- Incoming transfer confirmations showing money you brought from abroad, which help when you send savings or sale proceeds back out.
- Salary statements and tax documents, which support any request to buy foreign currency from your earnings in Vietnam.
- Records of large purchases and sales, such as a motorbike or household goods, if the money from them later forms part of what you transfer abroad.
A simple habit, saving a photo of every receipt in a dedicated album, means that when a bank officer asks you to show the source of funds in three years' time, you can do it in minutes rather than rebuilding the story from memory.
Câu hỏi thường gặp
Is it illegal to exchange money at a gold shop in Vietnam?
It is illegal unless the shop is authorised as a foreign currency exchange agent by a licensed bank. Many gold shops that change money informally have no such authorisation. Customers as well as shop owners can be fined, so it is safer to use banks or counters that clearly display their authorisation.
Where is the best place to exchange money in Vietnam?
For most people, a bank branch in town offers a fair rate with full legal protection and a receipt. Authorised counters are convenient for small amounts. If you have a Vietnamese account, receiving money by transfer and converting it inside the bank avoids cash entirely and is often the simplest option.
Can foreigners buy US dollars in Vietnam?
Yes, but only for purposes the regulations allow, such as travel, study or medical treatment abroad, or transferring legal income out of the country, and usually with supporting documents. Banks also apply limits. Buying dollars freely for savings, as many people did in the past, is not permitted for individuals.
Should I exchange money at the airport in Vietnam?
Airport counters are legal and convenient, but rates are often less favourable than at banks in town. Changing a small amount for your first taxi and meal is reasonable. Exchange larger sums later at a bank, or withdraw from an ATM with a card that has low foreign fees.
Will banks accept old or damaged foreign banknotes?
Banks may refuse notes that are torn, heavily marked, stained or from very old series, or accept them at a lower rate. US dollar notes in particular are examined closely. Bring clean, recent notes in good condition if you plan to exchange cash, and ask for the same when you buy currency.
Do I need my passport to exchange money in Vietnam?
Banks and authorised counters normally ask to see your passport for foreign currency transactions and record your details on the receipt. Carry it, or at least have your residence card, when you plan to exchange money, and keep the receipt you receive afterwards.