Customs Declarations for Travellers: What to Declare When You Land
Quick answer
Customs checks control what enters a country, so you must declare goods that exceed allowances, restricted items, and large amounts of cash. Limits differ by country, so check the official customs website for your destination before you fly. When in doubt, declare it: honest declarations usually cost little, while undeclared items can bring fines or confiscation.
Compare live fares on ScanFlyGo →
What customs is for
Customs officers have a different job from passport control. Immigration checks who you are and whether you may enter. Customs checks what you bring with you. They collect duties and taxes, enforce limits on alcohol and tobacco, and protect people, animals and crops from prohibited goods. The rules are set by each country, so a simple suitcase can be perfectly fine in one place and a problem in another.
Where the process happens
After landing you follow signs to immigration, collect your checked bags, and then pass through customs on the way out of the arrivals hall. Some countries use a paper or digital form you complete before you land, while others ask the questions at the booth or use a channel system. If you are connecting rather than ending your trip, your route may require you to clear customs at the first point of entry, which affects bag transfers (see our connecting flight baggage guide).
Typical items that need declaring
| Category | Why it matters |
|---|---|
| Cash and monetary instruments | Large sums must be declared to prevent money laundering |
| Alcohol and tobacco above allowance | Duty or tax may apply on the excess |
| New goods and gifts of high value | Purchases above the duty-free limit can be taxed |
| Food, plants, seeds and animal products | Biosecurity rules protect farming and health |
| Medicines and controlled substances | Some are restricted or need a prescription letter |
| Commercial samples or goods for resale | Business items are treated differently from personal belongings |
| Weapons, certain knives and replicas | Often prohibited or require permits |
Understanding allowances
A duty-free allowance is the value or quantity of goods you can bring in without paying tax. It varies widely, and it can differ between travellers arriving by air, sea or land. Goods you buy at a duty-free shop count towards the allowance when you arrive, because duty-free only means the item was sold without tax at the departure airport. Our duty-free shopping guide explains how this works in practice.
Red and green channels
Many airports use a two-channel system. Choose the green channel only when you are certain that you carry nothing above the allowance and nothing restricted. Choose red when you have something to declare or are unsure. Officers carry out random checks in both, and the penalty for a false statement is usually larger than any duty you would have paid by declaring honestly.
Cash, valuables and electronics
Besides cash, think about expensive items such as laptops, camera kit or jewellery. If you are carrying valuable equipment that you own and will take home again, keep receipts or serial numbers handy to show that it is not new. This avoids confusion on the way back into your own country. Our guides on flying with camera gear and flying with laptops cover related tips.
Food and souvenirs
Packed lunches, regional cheeses, honey, fresh fruit and homemade snacks are among the most common causes of customs problems. Even a harmless apple can be confiscated or lead to a fine in countries with strict biosecurity. If you have food and are not sure it is allowed, declare it or leave it behind. Souvenirs made of wood, shells, coral, ivory or animal skin can also be restricted under wildlife protection rules, so check before you buy.
Medication and health items
Keep medication in its original packaging with the prescription label, and carry a doctor's letter for anything stronger or any controlled substance. Rules differ greatly, and an item that is routine at home can be restricted elsewhere. Read our travel with medication guide and verify the destination's rules in advance.
A simple preparation checklist
- Search for the official customs website of your destination and read the traveller section.
- Complete any online arrival or declaration form before you fly if one is required.
- Keep receipts for high-value purchases made abroad.
- Remove food, plants and prohibited items from your bags before you pack.
- Keep documents for medication, business goods and expensive equipment in your hand luggage.
- If you are unsure about any item, declare it and ask the officer.
If an officer stops you
Stay calm and answer questions clearly and truthfully. Officers may ask about your trip, ask you to open bags, or scan them. Cooperate and ask for any written notice if goods are held. Being polite and honest tends to make the process faster, and you should keep any documents that officers provide.
Frequently asked questions
What do I have to declare at customs?
Typically cash above the local threshold, goods above duty-free allowances, commercial goods, and restricted items such as certain foods, plants, animal products, medicines or weapons. Exact rules vary by country.
How much cash can I carry on an international flight?
Many countries require you to declare cash or equivalents above a threshold, often around 10,000 in a major currency, though the exact amount and currency differ. Check the official guidance for both your departure and arrival countries.
Can I bring food through customs?
Often it is restricted. Many countries limit or prohibit meat, dairy, fresh produce, seeds and plants to protect agriculture and health. Sealed commercial products may be treated differently, so check first and declare if unsure.
What is the difference between the red and green channel?
The green channel is for travellers with nothing to declare, and the red channel is for those with items to declare. Officers can still stop people in either, so be honest and prepared.
The bottom line
Customs is much easier when you prepare. Read the destination's official rules, declare anything borderline, keep receipts for valuables, and never carry food, cash or medicine you cannot explain. Start a live search on ScanFlyGo, browse popular routes, and use the live flight tracker on travel day.
Some links on ScanFlyGo are affiliate links, so we may earn a commission at no extra cost to you. Prices are examples found in recent searches and are confirmed at the partner's checkout.