Cash, customs and what you can carry across at Lao Bao
How much cash can I carry through Lao Bao without declaring it?
Vietnam Customs sets two independent thresholds: USD 5,000 in foreign-currency cash, and VND 15,000,000 in dong, plus 300 g of gold. Crossing any of them means completing a customs declaration and using the red channel, on the way out or on the way back in — and the dong limit is the one runners trip over, because it is only about 570 USD. On a Da Nang visa run most travellers carry 2.5 to 3 million VND, comfortably under both lines.
What happens if I do not declare cash over the Lao Bao threshold?
Decree 169/2026, in force from 1 July 2026, tightened the customs penalties, with reported administrative fines of up to 50 million VND for an undeclared amount on exit and 20 million VND on entry. The declaration thresholds themselves did not change: USD 5,000 in foreign cash, VND 15,000,000 in dong, or 300 g of gold. If you are carrying more for a group booking or for the Da Nang to Laos leg after the run, fill in the form and use the red channel at the Lao Bao border crossing rather than risk losing the day.
What are the duty-free allowances when I re-enter Vietnam at Lao Bao?
Under Article 6 of Decree 134/2016, each traveller entering with a passport is exempt from import duty on 1.5 litres of alcohol at 20% ABV or more, or 2 litres below 20%, or 3 litres of beer and alcoholic drinks, plus 200 cigarettes or 250 g of loose tobacco or 20 cigars, per entry. The alcohol and tobacco allowances do not apply to anyone under 18. Anything above the allowance is declarable and taxable, which is the practical reason to keep Laos duty-free shopping small.
Can I take my own prescription medicine across at Lao Bao?
Yes, for personal use, kept in its original labelled packaging with the prescription or a doctor's letter, and in a quantity that matches the length of the trip rather than a year's supply. Vietnam restricts narcotic and psychotropic medicines to an approved, declared quantity, so anything in those categories needs the paperwork and a customs declaration behind it. Laos has its own restrictions, and since a same-day run keeps you in Laos for an hour there is never a reason to carry more than a few days' worth.
Do I have to declare my laptop, camera or drone at Lao Bao?
Personal electronics you carry for your own use — laptop, phone, camera — need no declaration on a same-day exit and re-entry, and nobody writes a form for a camera. Drones are the exception: flying one in Vietnam requires prior permission from the Ministry of National Defence and the civil aviation authority, and taking one into Laos needs its own approval, so the border is the worst place to discover that. Leave the drone at home unless you already hold the permissions.
How much cash should I actually have on me for a Da Nang visa run?
Budget roughly 2.5 to 3 million VND in clean dong: 1,000,000 to 1,200,000 VND for a shared van seat, 100,000 to 200,000 VND for food and drinks, and small change for the border-zone transit fee on the Vietnam side. Then keep the Laos money separate — 30 to 45 USD in unmarked notes with no tears, paid in cash at the visa-on-arrival window — and remember the Vietnam e-visa fee of 25 USD single-entry or 50 USD multiple-entry is card-only on the official portal, so it can never be paid at the counter. Separating the Laos cash means a refused note does not eat your transport home.
Will torn or marked US dollar notes be refused at the Laos window?
Yes, routinely. The Laos visa-on-arrival counter is cash-only and turns away notes with tears, ink, stamps or deep creases, and there is no ATM at the gate or in Dansavanh to replace them — the nearest dependable one is back in Dong Ha, about 80 km away. Ask your bank for newer, clean notes before you fly, keep them flat in a separate pocket, and treat 30 to 45 USD as the amount you must have in acceptable condition.
Is there a duty-free shop at Lao Bao, and what can I bring back?
There is a small duty-free shop on the Vietnam side of the crossing, and a same-day re-entry still counts as a fresh entry for customs, so the usual allowances apply: 1.5 litres of spirits, 200 cigarettes and personal-use quantities of everything else, with receipts worth keeping. Laos coffee, tea and snacks are the practical purchases and nobody questions a bag of coffee. Anything you would sell on in Vietnam is a different conversation, so keep it personal.
Can I bring a vape or e-cigarette on a visa run?
No. Vietnam banned the use and possession of e-cigarettes and heated tobacco from 1 January 2025, and Decree 371/2025 sets fines of 3 to 5 million VND plus confiscation of the device, so a vape in your bag at Lao Bao is a fine waiting to happen on either leg. Laos also restricts imports of vaping products. If you vape, leave the device at home for run day and pick it up when you are back in Da Nang.