U.S. Customs and Border Protection switches off the last grace period in its international mail rules on October 22, 2026. From that date, three categories of merchandise lose access to the postal informal entry process that CBP built to replace the de minimis exemption: goods regulated by partner government agencies, goods claiming a classification in Chapter 98 or Chapter 99 of the tariff schedule, and goods claiming duty-free treatment under a free trade agreement.
The cutover lands roughly six weeks before the Christmas delivery peak. For cross-border sellers who moved supplements, cosmetics, children’s products, small electronics or apparel into the United States by mail, the mail lane stops being an option on a Thursday in late October, and the alternative is a formal entry or a broker-filed electronic entry with a bond behind it.
CBP set the date in an interim final rule published in the Federal Register on June 24, 2026, under docket USCBP-2026-0761. The rule took effect on July 24, 2026, but the agency delayed compliance for the three hardest categories by three months. That delay expires on October 22.
In short
- October 22, 2026 is the compliance date for the provisions of 19 CFR 145.12 that exclude partner government agency (PGA) merchandise, Chapter 98 and Chapter 99 goods, and free trade agreement claims from the postal informal entry process.
- The mail informal entry lane covers international mail shipments valued at $2,500 or less. Shipments above that value, or subject to quota or antidumping and countervailing duties, already require a formal entry.
- Only the owner, the purchaser or a designated licensed customs broker may file. Foreign postal operators lost the right to act as filers when the rule took effect in July.
- The Consumer Product Safety Commission reaches mail shipments on the same date, requiring eFiled certificates of compliance through a Full or Reference Message Set, with Entry Type 13 filed on or before arrival.
- A continuous customs bond (Activity Code 1) registered in ACE eBond is a precondition of filing, which is the step most small sellers have not completed.
What changes at the border on October 22
The postal informal entry process has been live since July 24, 2026. What has not been live is the full set of eligibility exclusions. CBP wrote those exclusions into the rule but suspended their enforcement, letting regulated goods continue to flow through the mail lane while filers, brokers and the agency’s own systems caught up.
That accommodation ends on October 22. The specific provisions carrying the delayed compliance date are 19 CFR 145.12(a)(2)(v) and (vi), the paragraphs that carve regulated and specially classified merchandise out of the process.
The practical effect is narrow in text and wide in consequence. A parcel of vitamin supplements worth $40 does not become illegal to import. It becomes ineligible for the cheap, spreadsheet-based mail process, and has to be entered through a channel that assumes a broker relationship, a bond and line-level data.
| Category losing mail eligibility | Typical goods affected | Where the shipment must go instead |
|---|---|---|
| Partner government agency merchandise | Supplements, cosmetics, food, children’s products, certain electronics, medical devices | Formal entry, or Entry Type 13 with the relevant agency message set |
| HTSUS Chapter 98 goods | US goods returned, repairs and alterations, personal exemptions, warranty replacements | Formal entry with the secondary classification declared |
| HTSUS Chapter 99 goods | Shipments claiming trade remedy provisions or temporary rate lines | Formal entry with the Chapter 99 line reported |
| Free trade agreement claims | USMCA and other preference claims on low-value parcels | Formal entry, or duty paid without the preference |
The fourth row is the one most sellers underestimate. A preference claim is optional, so a shipper who cannot file it simply pays the duty, and the cost lands on landed price rather than on compliance risk.
There is a second-order effect inside the same table. Because the exclusions are defined by what a shipment claims rather than by what it costs, a seller can move a parcel out of scope by declining a benefit, which is a rational trade at low values and an expensive one at higher ones.
CBP has not published a transition mechanism for parcels already in the postal network when the date passes. Shipments tendered to a foreign post in the days before October 22 and arriving after it are the obvious edge case, and the conservative assumption is that treatment follows the date of arrival rather than the date of tender.
How the mail informal entry process actually works
The process CBP built is not a scaled-down version of a courier entry. It is a monthly reconciliation exercise with a customs bond attached, and it assumes a party in the United States is willing to be the importer of record.
Who may file
Filing rights are restricted to the owner or purchaser of the merchandise being mailed into the United States, or a licensed customs broker properly designated by the owner, purchaser or consignee. That sentence removed an entire layer of intermediaries from the mail chain.
Foreign postal operators, which had historically transmitted the customs declaration data that accompanied inbound mail, can no longer perform the entry. Unlicensed third-party filers and logistics resellers are excluded on the same basis. CBP made that switch when it moved Entry Type 13 into ACE production on September 22, and the October date extends the same logic to regulated goods.
The restriction is the structural change in the whole package. Under de minimis, no party needed to be the importer of record for a $40 parcel, because there was no entry to make. The new process requires someone with US legal standing and financial exposure to attach their name to every shipment, and that party is rarely the foreign seller.
What data CBP wants
The data set is close to a conventional informal entry. Filers transmit the filer code and importer of record number, a full merchandise description, the country of origin, the 10-digit HTSUS classification including any secondary Chapter 98 or Chapter 99 line, the duty rate, the declared value, the total duty owed, the carrier name, the foreign postal tracking number and the port of arrival.
Special program indicators and trade remedy data are required where they apply. The tracking number is the element that ties the electronic filing back to the physical parcel moving through the postal network, and it is the element that most often fails when a seller is working from marketplace order exports rather than carrier data.
Country of origin is the second common failure point. Marketplace listings routinely record a shipping location rather than an origin, and the two diverge whenever goods are consolidated in a third country before export, which is precisely the pattern that trade remedy enforcement targets.
Classification is the third. A 10-digit code is materially harder to produce than the 6-digit code most commercial invoices carry, and the last four digits are where the statistical and program-specific detail sits.
How duties get paid
Payment runs on a monthly cycle rather than per shipment. Filers submit a periodic spreadsheet covering the prior month’s mail entries and remit the duty owed, with the payment due by the seventh day of the following month.
Behind all of it sits the bond. A basic continuous importation and entry bond, Activity Code 1, must be active in ACE eBond before filing begins. Single-transaction bonds are workable in theory and impractical in practice for a seller pushing a recurring stream of small parcels.
Why partner government agency goods are the hard part
Of the three excluded categories, PGA merchandise is the one that touches the most consumer e-commerce. The category is defined by which federal agency regulates the product, not by value, so a $12 lip balm and a $1,200 medical device sit on the same side of the line.
What counts as a PGA product
PGA coverage sweeps in food and dietary supplements, cosmetics, drugs and medical devices, children’s products and toys, many consumer electronics, and goods subject to agriculture, fish and wildlife or environmental controls. For a general merchandise seller, the practical question is not whether any of the catalogue is regulated but what share of it is.
Sellers who have never classified their catalogue tend to discover the answer late. Categories that look unregulated frequently are not: a scented candle, a phone charger and a toddler’s water bottle can each trigger a different agency’s data requirement.
The asymmetry with value is what makes the category awkward. Compliance cost per shipment is broadly fixed, so the burden falls hardest on exactly the low-priced goods that the postal channel existed to carry.
Agency data requirements also vary in what they demand. Some need only a flag and a code at entry, while others require a certificate, a registration number or a prior notice filing, and a seller cannot assume that clearing one agency’s requirement prepares them for another’s.
The CPSC certificate layer
The Consumer Product Safety Commission adds a second obligation on the same date. CPSC made electronic filing of certificates of compliance mandatory on July 8, 2026, requiring importers to transmit certificate data through ACE at the time of entry for regulated consumer products.
According to CPSC guidance for mail shipments, the agency will require eFiled certificates for mail beginning October 22, 2026, submitted via a Full or Reference Message Set, with Entry Type 13 filed upon or prior to arrival in the United States. CPSC has been explicit that there is no de minimis carve-out from its certificate rules: the requirement applies regardless of shipment value, including direct-to-consumer parcels.
The agency has framed the change as modernization rather than new substance. In announcing the mandatory phase, Acting Chairman Feldman said eFiling brings the commission’s import surveillance and targeting capabilities into the 21st century, enabling it to identify and interdict high-risk shipments earlier. CPSC has noted the program followed alpha and beta testing that ran from 2016–2024, and that foreign trade zone requirements follow on January 8, 2027.
What Chapter 98 and Chapter 99 shipments lose
Chapter 98 of the Harmonized Tariff Schedule holds the special classification provisions: American goods returned, articles exported for repair or alteration, personal exemptions and warranty replacements. Chapter 99 holds temporary modifications, including the trade remedy lines that carry the current tariff programs.
Both chapters matter enormously to returns and warranty flows. A brand shipping a replacement unit to a US customer, or receiving a defective item back for repair, has historically relied on Chapter 98 provisions to avoid paying duty twice on the same goods.
After October 22, those movements cannot ride the mail informal entry process. They can still claim the provision, but only through a channel that supports a secondary classification line, which in practice means a formal entry and a broker.
The Chapter 99 exclusion is more procedural than commercial. Because the current tariff programs are reported on Chapter 99 lines, excluding them from the mail lane reflects CBP’s preference to see trade remedy exposure declared in a system built to validate it.
For reverse logistics teams, the practical consequence is a routing decision rather than a duty question. A returns flow that has been running through the postal network at negligible cost may need a commercial carrier and a broker from late October, and the unit economics of free returns on low-value goods do not survive that change intact.
How the mail lane reached this point
The October date is the last step in an unwind that has run for more than a year, and understanding the sequence explains why the mail channel got a separate rule from every other mode.
From an $800 exemption to ad valorem duty
Duty-free de minimis treatment for shipments valued at $800 or less was suspended for all countries effective August 29, 2025, under Executive Order 14324. CBP has pointed to volume as the driver, citing more than 1.36 billion de minimis shipments processed in a single year, roughly a ten-fold increase over the prior period.
The initial postal mechanism offered carriers a choice. They could pay an ad valorem duty equal to the effective tariff rate for the country of origin, or a specific duty of $80 to $200 per item depending on that rate. Carriers had to apply one method consistently within a remittance period and could switch once a month with at least 24 hours’ notice to CBP.
The specific duty option was available for six months. From February 28, 2026, all postal shipments moved to the ad valorem method, with the rate set by the Proclamation of February 20, 2026, and the country of origin and value declared to CBP for each dutiable item.
The move to ad valorem was consequential in a way that the headline understated. A flat per-item charge can be applied by a carrier holding almost no information about the goods, whereas an ad valorem rate requires a declared origin and a declared value for every item, which is the data burden that the entry process later formalized.
Read in sequence, the dates describe a single design rather than a series of reactions. The exemption went first, the simple charging mechanism went second, and the entry requirement followed once the data obligation was already in place.
| Date | What happened | Who it affected |
|---|---|---|
| August 29, 2025 | Duty-free de minimis suspended for all countries under EO 14324 | Every low-value importer |
| February 28, 2026 | Specific duty option withdrawn, ad valorem method becomes mandatory for mail | Carriers and postal operators |
| June 24, 2026 | Two interim final rules published, codifying indefinite suspension for mail and all other modes | All importers of record |
| July 8, 2026 | CPSC eFiling of certificates of compliance becomes mandatory | Consumer product importers |
| July 24, 2026 | Postal informal entry process takes effect, prepay threshold set at $2,500 | Mail filers and brokers |
| September 22, 2026 | Entry Type 13 deploys to ACE production | Brokers and self-filing importers |
| October 22, 2026 | PGA, Chapter 98/99 and FTA claims lose mail eligibility; CPSC eFiling reaches mail | Regulated consumer goods sellers |
The June 24 publication produced two parallel rules, one for the international postal network and a companion covering all other modes of transport. Splitting them was deliberate: mail is the only channel where a foreign government entity, not a commercial carrier, controls the handoff.
What the global postal network did in response
The response to the original suspension was not a gradual repricing. It was a stoppage. Around 88 foreign postal operators suspended US-bound shipments, and the Universal Postal Union reported that international mail traffic to the United States fell by roughly 80% in a single day.
The operators that paused included Deutsche Post and La Poste, with services from Japan, India, Singapore, Taiwan and Thailand also suspended in whole or in part. Most have since restored service in some form, but the episode established that postal operators will stop rather than absorb an unpriced compliance obligation.
That matters for October 22 because the same decision logic applies. A foreign post that cannot guarantee a compliant Entry Type 13 filing for a regulated parcel has a simpler option than building the capability, which is to refuse the parcel at acceptance.
The longer trend was already pointing down. Data published by the USPS inspector general shows inbound international volumes falling from 659 million pieces in fiscal 2017 to 169 million in fiscal 2022, a decline of roughly 74% before the de minimis changes took effect at all.
That decline reframes what October 22 actually threatens. The postal channel was already a shrinking share of cross-border parcel flow, so the deadline is less a shock to a major artery than the closing of a route that had been narrowing for most of a decade.
How the US mail rules compare with the EU and UK
The United States is not moving alone, but it is moving differently. The European Union has chosen a per-item charge applied at scale, while the US has chosen an entry-process requirement enforced through filing rights and bonds.
In the European Union, a flat duty of EUR 3 per item has applied to low-value consignments since July 1, 2026, and a customs handling fee of EUR 2 per item is scheduled to follow on November 1. The fee is charged per item rather than per parcel, so a box holding three distinct products attracts three charges. The EU’s broader overhaul, which entered into force in September with the parcel handling fee dated to November 1, also introduces a deemed importer concept that puts the platform rather than the consumer on the hook for formalities.
| Feature | United States | European Union | United Kingdom |
|---|---|---|---|
| Low-value relief status | Suspended indefinitely since August 2025 | EUR 150 duty exemption replaced by flat per-item duty | GBP 135 relief reported to end in 2028 |
| Charging mechanism | Ad valorem duty at the country’s effective rate | EUR 3 per item, plus EUR 2 handling from November 1, 2026 | Relief still in force pending reform |
| Who is liable | Importer of record, filed by owner, purchaser or broker | Deemed importer, typically the platform or distance seller | Overseas seller or marketplace for VAT |
| Central system | ACE, with Entry Type 13 for mail | EU Customs Data Hub, mandatory for e-commerce from July 1, 2028 | Existing CDS platform |
| New authority | CBP and partner agencies | EU Customs Authority, based in Lille and operational from 2027 | HMRC |
The contrast is worth stating plainly. The EU approach raises the unit cost of every low-value parcel and is felt by consumers at checkout. The US approach raises the capability threshold for shipping at all, and is felt by sellers who cannot produce a filer, a bond and a classification.
Each design has a characteristic failure mode. A per-item charge is predictable and easy to pass through, but it accumulates awkwardly on multi-item baskets and invites unbundling. A capability threshold is harder to game, but it removes participants rather than repricing them, and the effect on assortment shows up with a lag.
The two systems also differ on who carries the liability. The EU’s deemed importer concept pushes the obligation onto the platform, which concentrates compliance in a small number of well-resourced entities. The US model leaves it with the importer of record, which distributes the obligation across a long tail of sellers and brokers.
Which sellers are most exposed before peak season
Exposure concentrates in a specific profile: a non-US seller, shipping regulated consumer goods, in small parcels, through the postal network, without a US entity or an established broker relationship. That description fits a meaningful share of long-tail marketplace supply.
Larger cross-border platforms have already moved most volume off the postal network and onto commercial carriers, where the entry infrastructure exists and landed cost can be quoted at checkout. Those carriers have repriced the work accordingly, and the import surcharges introduced across Canada, Europe and China lanes in September are part of the same adjustment.
The timing compounds the problem. A seller discovering on October 20 that half the catalogue is PGA-regulated has no realistic path to a bonded broker relationship and a classified catalogue before the deadline, let alone before peak.
The likely outcome for that cohort is not compliance but withdrawal: pausing US-bound mail shipments for the quarter, or routing through a US-based fulfilment partner who becomes the importer of record. Both responses reduce assortment available to US shoppers in the weeks that matter most.
Marketplaces sit awkwardly in the middle. They are not the importer of record under the US model, but they carry the customer relationship when a parcel is held at the border, which gives them an incentive to enforce seller readiness ahead of the date rather than absorb the service failures after it.
What importers should do before the deadline
The preparation work is unglamorous and mostly clerical, which is why it tends to be deferred until a shipment is already being held.
The first step is a catalogue classification pass: assign a 10-digit HTSUS code to every SKU shipped by mail, and flag which codes carry a PGA requirement. The second is to confirm whether any inbound flow relies on a Chapter 98 provision, which is common for warranty replacements and returns and easy to miss because it lives in the reverse logistics process rather than the sales process.
The third is the bond. A continuous importation and entry bond must be active in ACE eBond before filing, and the sizing depends on projected annual duty, so it cannot be arranged the week it is needed.
The fourth is the importer of record identity itself. CBP has been tightening this layer independently, and sellers should verify their number is active and correctly associated, because the agency has been voiding dormant importer numbers and holding cross-border freight as a result.
The fifth is a decision rather than a task: whether to file at all. For a seller whose regulated SKUs are a small share of revenue, suppressing those listings for US delivery through the fourth quarter may cost less than standing up a compliance capability under deadline pressure.
Whichever path is chosen, the customer-facing work should not be left to the border. Delivery promises, duty disclosures at checkout and returns policies all need to reflect the new routing, because a parcel held for an entry problem produces a service failure that the shopper attributes to the seller rather than to CBP.
What lands after October 22
The mail cutover is one date in a dense fourth quarter, and several of the others also land on retail sourcing rather than on industrial inputs.
| Date | Event | Sector exposure |
|---|---|---|
| October 6, 2026 | CAPE Phase 3 deploys in ACE for liquidated tariff refunds | CIT plaintiffs with importer numbers filed by July 30 |
| October 22, 2026 | Mail eligibility exclusions and CPSC eFiling for mail take effect | Regulated consumer goods, cross-border sellers |
| November 9, 2026 | All 178 remaining China Section 301 exclusions expire at 11:59 p.m. | Importers with excluded product lines |
| December 1, 2026 | Comments close on CBP’s heightened import-disclosure proposal | All importers of record |
| December 4, 2026 | Section 232 polysilicon action applies minimum import prices plus 15% | Solar and electronics supply chains |
The refund track runs in the opposite direction to the compliance track, which is the oddity of this quarter. Importers are simultaneously being asked to file more data on new shipments and being repaid on old ones, and the October 6 refund phase covers the oldest entries first.
The November 9 expiry is the larger commercial event of the two, because exclusions removed on that date apply to goods already on the water. The mail deadline, by contrast, is a capability test that a seller either passes or does not, and the answer is knowable today.
Enforcement posture is the open question. CBP has not signalled whether the first weeks after October 22 will bring rejections at the port of arrival or a period of informed compliance, and the distinction matters most to sellers whose shipments are already in transit.
What is not open to question is the direction of travel. Every step in this sequence has moved data collection earlier in the shipment lifecycle and pushed liability onto a named party, and nothing in the fourth quarter calendar reverses that.
Frequently asked questions
What exactly happens on October 22, 2026?
The delayed compliance period ends for the provisions of 19 CFR 145.12 that exclude partner government agency merchandise, Chapter 98 and Chapter 99 goods, and free trade agreement claims from the postal informal entry process. Those shipments must then use formal entry or another eligible channel. CPSC certificate eFiling also reaches mail shipments on the same date.
Is the de minimis exemption itself changing on that date?
No. Duty-free de minimis treatment was suspended for all countries effective August 29, 2025, and CBP codified an indefinite suspension in interim final rules published on June 24, 2026. The October date concerns which goods may use the replacement mail process, not whether duty is owed.
What value limit applies to mail informal entry?
The process covers international mail shipments valued at $2,500 or less. Shipments above that value, or subject to quota or to antidumping and countervailing duties, require a formal entry regardless of the October date.
Can a foreign seller file the entry themselves?
Only if they are the owner or purchaser of the merchandise and can meet the importer of record requirements, including an active continuous bond in ACE eBond. Otherwise a licensed customs broker must be designated by the owner, purchaser or consignee. Foreign postal operators and unlicensed third parties cannot file.
How do I know whether my products are PGA-regulated?
The determination follows the 10-digit HTSUS classification and the agency rules attached to it. Supplements, cosmetics, food, children’s products, many electronics and medical devices commonly carry a requirement, but the classification pass is the only reliable way to answer it for a specific catalogue.
What is Entry Type 13?
It is the ACE entry type created for USPS international mail shipment data. CBP deployed it to the ACE certification environment on July 24, 2026, and to production on September 22, 2026, with implementation guidance issued through the Cargo Systems Messaging Service.
How are duties paid under the mail process?
On a monthly cycle rather than per parcel. Filers submit a periodic return covering the prior month’s mail entries and remit the duty owed, with payment due by the seventh day of the following month, supported by a continuous importation and entry bond.
Does this affect returns and warranty replacements?
Yes, and it is the most commonly overlooked impact. Those flows typically rely on Chapter 98 special classification provisions, which lose mail informal entry eligibility on October 22 and must move through a channel that supports a secondary classification line.
How does the US approach differ from the EU’s?
The EU is raising the unit cost of low-value parcels through a flat EUR 3 duty already in force and a EUR 2 per-item handling fee scheduled for November 1, 2026. The US is instead raising the capability threshold, restricting who may file and requiring a bond, classification data and agency certificates.
The full text of the rule, including the definitions and the precise scope of the exclusions, is published in the Federal Register as the interim final rule on indefinite suspension of the de minimis exemption for mail shipments.