Why a mailed parcel and a courier parcel are not the same

Two rulebooks, not one

Importations through the international post are governed by their own part of the customs regulations. That part opens by saying it does not contain all the regulations applicable to mail importations. Importations by mail are subject to the same requirements and restrictions as importations by any other means, except where more specific procedures are set out.

Express carriers are governed by a different part, covering express consignments. It sets up an approval process for facilities, a manifest requirement, bonding, and separate informal and formal entry procedures.

So the same box, sent two ways, is described to the government by different people using different documents. In the post, a foreign postal operator supplies the data. Through a courier, the carrier files it.

The courier part also regulates the building a parcel passes through. Approval of an express consignment carrier or hub facility is applied for in writing. The application carries blueprints, floor plans and facility locations, a statement of the general character of the operations, an estimate of transaction volumes, a list of principal company officials, and a projected start-up date.

The data that travels ahead of a mailed parcel

Since the end of 2020, advance electronic data has been mandatory for inbound international mail containing goods. It applies to Express Mail Service items, parcel post, and letter class mail containing goods, which the rule calls small packets and caps at two kilograms.

Thirteen item-level fields are mandatory in all cases. Sender's name and address. Recipient's name and address. A detailed description of contents. Quantity. Weight. An item identifier. Declared value. And the designated operator.

A second group of fields is preferred rather than mandatory. It includes telephone and email contacts for both parties, the category of the item, and the date of posting. It also includes the tariff number and country of origin for commercial items, an importer reference, a license number, a certificate number, an invoice number, and details of any quarantine or sanitary restriction.

The data has to reach the government no later than before the mail is loaded onto the transporting conveyance. Updates are required as soon as more accurate information becomes available.

A shipment-level layer sits above the items. It covers the origin and destination posts and the dispatch number. It also covers the scheduled departure and arrival times, the carrier and flight or voyage number, the scheduled mail facility, the total weight, and the identifiers of the receptacles inside the dispatch.

The consequence of missing data is written into the rule. The postal service must refuse shipments for which the required data is not received, unless remedial action is warranted instead. The remedial actions named include destruction, seizure, controlled delivery and other law enforcement initiatives.

What a courier files instead

Express consignment operators and carriers provide manifest information in advance of the arrival of all cargo, including articles for which no entry is required, which are listed separately with their entry status noted.

Seven fields are named. The country of origin of the merchandise. The shipper's name, address and country. The ultimate consignee's name and address. A specific description of the merchandise. Then the quantity, the shipping weight and the value. A tariff number is added in two situations, one of which is where the goods may not be passed free of duty as a shipment worth no more than eight hundred dollars.

The approval conditions on a carrier facility are worth knowing about, because they are not paperwork alone. An applicant agrees to process all cargo in the government's electronic system, to provide office space, equipment and security at no cost, and to sign a narcotics enforcement agreement with U.S. Immigration and Customs Enforcement.

Approval can be withdrawn. A port director notifies an applicant in writing of a decision to approve, deny, suspend or revoke, stating the grounds. An appeal may be filed within thirty days, and in a suspension or revocation case a hearing may be requested in the same period. That hearing is held before a hearing officer, with cross-examination and a stenographic record.

The value thresholds that decide the paperwork

Both lanes sort shipments by value, and both carve out the same categories from the simplified route.

In the mail, formal entry is required for every importation exceeding two thousand five hundred dollars in value. It is also required for merchandise under a quota, for goods subject to an antidumping or countervailing duty order, and for alcohol and tobacco. It is also required for any mail shipment subject to the requirements of another government agency.

That last item is the one that matters most in a market of regulated products. A shipment that another agency regulates does not travel the simplified route regardless of what it cost.

Informal entry generally covers shipments not exceeding two thousand five hundred dollars, and the express consignment rules use the same figure. The informal route may not be used for prohibited or restricted merchandise, for goods under a quota, or for articles the statute excludes from it.

Value is not the only trigger for the stricter route. Formal entry may be required for any merchandise where it is deemed necessary for admissibility enforcement, revenue protection, or the efficient conduct of customs business.

The informal route also carries its own paperwork. A commercial invoice used as an informal entry has to bear a signed declaration. It states that the information on the invoice is accurate, that the quantities are true and correct manifest quantities, and that the filer knows of no other invoice.

Separate shipments each worth no more than two thousand five hundred dollars, mailed abroad at different times, cannot be combined to force formal entry, unless the splitting was done to avoid paying duty.

The eight-hundred-dollar exemption, and where it currently stands

The administrative exemption most people have heard of passes shipments worth no more than eight hundred dollars free of duty and tax without an entry being prepared.

Both places it appears now carry a suspension paragraph, added in the middle of 2026. In the mail rules, the exemption is suspended for merchandise arriving through the international postal network. In the general customs rules, it is suspended for merchandise arriving via all modes other than through the international postal network.

Each suspension runs until the agency determines that applying the exemption is no longer inconsistent with the purpose of the statute behind it, no longer jeopardizes the revenue, and no longer facilitates unlawful importations. Any change or revocation is to be announced in the Federal Register.

A separate and smaller exemption for bona fide gifts sits alongside it, at one hundred dollars, and it does not carry that suspension paragraph.

The useful reading for someone looking at an overseas listing is narrow. A number quoted on a seller's shipping page as a duty-free threshold describes a rule that has a live suspension written into its own text. The rule also names where any change to that suspension would be published.

Sources

Each document below is named as it names itself, with the date printed on that document rather than the day it was read.

1. 19 CFR 145.73 and 145.74 — Mandatory advance electronic data for mail shipments, the mandatory and preferred data elements, the transmission deadline, and the refusal requirement where data is not received — Office of the Federal Register, Electronic Code of Federal Regulations, September 2026
2. 19 CFR 145.12 and 145.31 — Entry of merchandise in the mail, the formal entry triggers including shipments subject to another agency, the anti-splitting sentence, and the suspended exemption for importations not over $800 — Office of the Federal Register, Electronic Code of Federal Regulations, September 2026
3. 19 CFR Part 128 — Express Consignments, read in full for the facility application conditions including the narcotics enforcement agreement, the advance manifest data elements, and the informal and formal entry procedures — Office of the Federal Register, Electronic Code of Federal Regulations, September 2026
4. 19 CFR 10.151 — Importations not over $800, read for the exemption and its suspension for merchandise arriving via all modes other than the international postal network — Office of the Federal Register, Electronic Code of Federal Regulations, September 2026
5. 19 CFR 143.21 and 143.22 — Merchandise eligible for informal entry, and the authority to require formal entry for admissibility enforcement, revenue protection or efficient conduct of customs business — Office of the Federal Register, Electronic Code of Federal Regulations, September 2026