A 60-inch box, the mainland and the islands on one lane, and only two national rules to watch.
A generous box, and the islands on the same lane
USPS applies one of two size envelopes to each destination abroad, and Portugal gets the larger one. That matters for anything long, because the difference between the two is real.
| Product | Weight ceiling | Size limit | Customs form |
|---|---|---|---|
| Priority Mail International | 66 lb | 60 in longest side; 108 in length plus girth | PS Form 2976-A inside PS Form 2976-E |
| Priority Mail Express International | 66 lb | Per the international manual | PS Form 2976-B inside PS Form 2976-E |
| First-Class Package International Service | 4 lb | Small packet limits | PS Form 2976 |
| First-Class Mail International | 3.5 oz letters; 15.994 oz large envelopes | Letter and flat limits | None unless otherwise required |
| Airmail M-bags | 66 lb | One direct sack to one addressee | PS Form 2976 |
| “Global Express Guaranteed” | Suspended since September 29, 2024 | — | Not applicable while suspended |
The Azores and Madeira are not a separate destination. The listing serves them under their own postal codes, Ponta Delgada 9500, Angra do Heroismo 9700 and Horta 9900 in the Azores, and Funchal 9000 on Madeira, and they ride the same products as the mainland. For flat-rate cartons the ceiling is 20 pounds to Portugal, or lower where the country limit dips beneath it, so a box packed to its printed capacity can cross the line before it reaches the counter.
Two national rules on top of the EU paperwork
Beyond the customs union's requirements, Portugal keeps two conditions of its own that catch ordinary parcels. Neither is obvious from a shipping label.
Banknotes need a license
The listing admits banknotes only when the addressee holds a Bank of Portugal license. Currency, securities, precious metals and jewelry sit in the prohibited group for ordinary mail regardless, so this is a narrow opening rather than a general allowance.
Medicines need health authorization
Medicaments require the authorization of the Director General of Health of Portugal. A parcel of medication sent without it is a hold at customs, not a delivery, so the recipient should have the paperwork in hand first.
Commercial goods need a permit
Import permits must be obtained for shipments the Portuguese authorities regard as commercial. A private gift is treated differently from a shipment that looks like stock for resale.
The prohibitions themselves hold one entry an American sender rarely expects: cigarette lighters and refills containing butane gas are barred, named alongside arms, tobacco, live plants and animals, human remains, and lottery tickets and advertisements. A butane lighter is a common thing to slip into a care package, and it is exactly the thing that stops one.
What the customs form now has to carry
Since July 1, 2021 the exemption that once let low-value parcels into the European Union without tax has been gone, and Portugal's listing records it: value-added tax now attaches to imported goods whatever the parcel is worth. The practical effect is that the recipient may be billed a small amount on delivery even for an inexpensive item, so a gift is worth marking honestly rather than under-declaring in the hope of dodging a charge that no longer has a floor.
The listing also asks for the country of origin of each article and the sender's Economic Operator Registration Identification number if one has been assigned. Commercial shipments and personal shipments valued over 300 United States dollars need a commercial invoice, and every item containing goods needs the six-digit harmonized system code for each article on the declaration. A local telephone number is requested for a street address and required for a post office box, so a parcel to a Portuguese post office box without a phone number is incomplete on the face of it.
Registered Mail, receipts and cover
Registered Mail is available for First-Class Mail International, with a return receipt sold only alongside it. Shipping protection is offered on the two Priority Mail International products for merchandise. Restricted delivery, international postal money orders and international reply coupons are listed as not available, and the postal channel does not settle a recipient's customs charge in advance. Whatever Portuguese customs assesses is collected at the door.
Where a Portugal figure comes from
A Portugal parcel's price rides on its heft, its dimensions and the date it ships, none of which a page can pin down ahead of time. Nothing shown above is postage. SMKlog's online international labels cover Canada, the UK, Germany and Australia; other destinations are not sold here.
SMKlog's online international labels cover Canada, the UK, Germany and Australia; other destinations are not sold here. If the box is going to the Azores or Madeira, note that on the request so the island routing is priced correctly.
Where these rules come from
- United States Postal Service, Individual Country Listing — Portugal — prohibitions, the banknote and medicament conditions, product ceilings, size limits, the Azores and Madeira postal codes, customs paperwork and extra services. Read 2026-08-08.
- United States Postal Service, international service alerts — the suspension and restriction lists on which Portugal does not appear. Read 2026-08-08.
Portugal revises its conditions from time to time and USPS follows suit. What appears here is what those two pages showed on 2026-08-08, so open them again before the day you post a box.
Common questions
How large a box can be mailed to Portugal?
Priority Mail International to Portugal allows a 60-inch longest side and 108 inches for length plus girth, at up to 66 pounds. That is the larger of the two size envelopes USPS applies abroad, so a long box that would be refused for some destinations still fits for Portugal.
Does mail reach the Azores and Madeira?
Yes. The listing serves all of Portugal including the Azores and Madeira, and gives the island postal codes: Ponta Delgada 9500, Angra do Heroismo 9700, Horta 9900 and Funchal 9000. They travel on the same products as the mainland.
Can I mail a cigarette lighter to Portugal?
No. Portugal's prohibitions name cigarette lighters and refills containing butane gas outright, alongside tobacco and arms. A lighter tucked into a gift parcel is enough to put the whole box on the prohibited list.
Are there national rules beyond the usual EU customs?
Two. Banknotes are admitted only if the addressee holds a Bank of Portugal license, and medicaments require the authorization of the Director General of Health of Portugal. Both sit on top of the ordinary European Union customs paperwork.
Is Portugal's mail service suspended right now?
No. Portugal does not appear on the Postal Service's international service alerts as suspended or restricted, read on 2026-08-08. All the ordinary products run, and only Global Express Guaranteed is out, suspended everywhere since September 29, 2024.