Section 338 Canada T-1: 19 CFR 142.16 Deferred Summary Election as Arbitrage Tool for Dairy, Alcohol, and MV Loads Straddling August 22, 750k CIF Quebec Cheese Worked Example

Twenty-four hours to the Section 338 Canada cliff. At 12:01 AM Eastern Daylight Time Saturday August 22, the 50 percent additional ad valorem duty attaches under Chapter 99 headings 9903.03.12 (alcoholic beverages), 9903.03.13 (dairy), and 9903.03.14 (motor vehicles plus Annex II wood and consumer scope). Source: hts.usitc.gov chapter 99 subchapter III, U.S. Note 51.

For high-value Canadian cargo still in transit tonight, a subset of shipments cannot physically arrive in port limits and clear release before the cliff instant. A Quebec cheese consignment that departed a Saint-Hyacinthe plant Wednesday afternoon and is routed by refrigerated truck to a Boston distribution center will arrive at the Highgate Springs Vermont port of entry Saturday morning at 6:00 AM EDT, six hours after the cliff. Under standard release procedure, 9903.03.13 attaches at Summary Acceptance. Fifty percent on the CIF value.

The 19 CFR 142.16 Deferred Summary election is one of the few procedural tools that can decouple the entry summary date (rate-lock date under 19 CFR 141.68(c) and 141.69) from the arrival date. Used correctly, it locks a pre-cliff rate on cargo that physically arrives post-cliff. Used incorrectly, it triggers a rate-flip that CBP will assess at the higher of the two rates.

19 CFR 142.16 in context

19 CFR 142.16 sits inside 19 CFR Part 142 Subpart B, "Entry Summary Documentation." Full text at ecfr.gov/current/title-19/chapter-I/part-142/subpart-B/section-142.16.

The regulation authorizes the port director to permit an importer to file entry summary documentation in advance of the arrival of the merchandise, where the importer has filed the entry (CBP Form 3461) with a special permit for immediate delivery under 19 CFR 142.21. This creates the Deferred Summary posture: 3461 entry is on file, merchandise arrival is pending, entry summary (Form 7501) is filed with estimated duties.

Under 19 CFR 141.68(c), the importer may elect to have the time of entry be the time the entry summary is filed with estimated duties attached, at the importer's option, if the entry summary is filed before merchandise arrives within port limits. This is the operative election. It requires:

1. Merchandise not yet arrived within port limits at the time of election.
2. Entry summary (7501) filed in proper form, with estimated duties tendered or attached under 19 CFR 141.68(f) rules.
3. Written election by the importer or broker on the entry summary itself, invoking 141.68(c).

The port director's discretion under 142.16 is real. Not every port allows Deferred Summary as an accommodation on any given day. Detroit CBP has historically been more restrictive than LA/Long Beach. Buffalo and Champlain are middle-ground. Vermont ports (Highgate Springs, Derby Line) are generally receptive when the broker has established a track record.

Broker sequence for Deferred Summary election

The workflow for a Deferred Summary election at T-1 to a cliff:

Step 1. Confirm the shipment is not yet within port limits. Port limits are defined at 19 CFR 101.3 for each customs port. For land-border crossings, the port limits extend to the physical commercial vehicle inspection facility. For seaports, port limits extend across the harbor as defined by the CBP-published port description. A truck at a Quebec commercial staging yard 40 miles from the Vermont border is not within Highgate Springs port limits. A truck queued in the CVIS lane at Highgate Springs is within port limits.

Step 2. File CBP Form 3461 (or ABI electronic equivalent) with immediate delivery special permit indicator. This has to be done under the 19 CFR 142.21 immediate delivery authorization already on file with the port, or under a one-off special permit granted by the port director for the specific shipment.

Step 3. File CBP Form 7501 entry summary in proper form via ACE, with estimated duties calculated at the pre-cliff rate (MFN base, no 9903.03.13 line). The 7501 must be data-complete on all 14-digit HTS lines, valuation, party identifiers, and tendering.

Step 4. Include the 19 CFR 141.68(c) election language on the 7501. The election is captured in the entry summary record. ACE has a specific entry summary indicator for the 141.68(c) election.

Step 5. Tender estimated duties at the pre-cliff rate. The tender is the key rate-lock instrument. CBP treats the tender as evidence of the importer's good-faith intent to invoke the election.

Step 6. Confirm the timestamp on the 7501 filing acceptance. ACE will return a summary acceptance timestamp. That timestamp is the operative rate-lock instant per 141.68(c).

Timing constraint

The 7501 filing must precede physical arrival within port limits. If the driver crosses into the CVIS lane at Highgate Springs at 5:47 AM EDT August 22, and the broker filed 7501 at 5:32 AM EDT August 22, the election works only if the 7501 filing preceded the arrival. If both timestamps are within a narrow window, CBP will look at operational logs to establish sequence. Refrigerated truck GPS data, CVIS camera timestamps, and ABI transmission logs are the primary evidentiary sources.

Best practice for T-1 cliff arbitrage: file 7501 no later than 4 hours before the estimated arrival, with a documented ETA gap that gives CBP no room to reverse-sequence the timestamps.

Why this works as arbitrage on a cliff

19 CFR 141.69 (Rates of duty applicable to merchandise) states: "The rates of duty applicable to merchandise shall be the rates in effect at the time of entry as defined in section 141.68 of this part, except as otherwise specifically provided for in this chapter." Section 338 duties under 9903.03.13 do not carve out a special rate-lock rule. The rate at time of entry per 141.68 controls.

If 141.68(c) election is validly made and the 7501 timestamp is pre-cliff, the rate in effect at 141.68 time-of-entry is the pre-cliff rate. Section 338 does not attach even though the merchandise physically arrives post-cliff. This is not a loophole. It is the plain-text application of the regulations to a fact pattern the Proclamation drafters did not carve out.

Worked example: 750,000 CIF Quebec cheese consignment

Consignment details:

• Origin: Saint-Hyacinthe Quebec, mixed cheese production facility.
• Product: 22,000 kg of assorted Canadian cheeses. HS 0406.10 (fresh cheese, unripened), HS 0406.20 (grated or powdered cheese), HS 0406.30 (processed cheese, not grated or powdered), HS 0406.90 (other cheese). Bulk of value in HS 0406.10.28 (fresh cheese, other, in-quota) and HS 0406.90.97 (other cheese, other, not in quota).
• CIF value at U.S. port of entry: 750,000.
• Mode: refrigerated 40-foot container by truck. Route: Saint-Hyacinthe QC to Boston Massachusetts. Border crossing: Highgate Springs Vermont.
• Departure: Wednesday August 19 3:00 PM EDT.
• Estimated arrival at Highgate Springs CVIS lane: Saturday August 22 6:00 AM EDT.
• Broker: Boston-based licensed customs broker with established immediate delivery authorization at Highgate Springs.
• Importer: Boston distributor with continuous customs bond, IOR on record.

MFN base analysis:

Cheese under HS 0406 has a complex duty structure. In-quota lines (with tariff-rate quota under WTO commitments) carry rates ranging from 0.113 per kg to 1.509 per kg. Over-quota lines carry rates up to 106.68 percent ad valorem or specific rates. Assume for the worked example a blended MFN base of approximately 6.8 percent effective ad valorem on the 750,000 CIF value (mix of in-quota, over-quota, and specific-rate lines).

MFN base duty at 6.8 percent: 51,000. MPF: 634.62 (2026 cap). HMF: not applicable (truck). Total federal cost pre-cliff: approximately 51,635.

Post-cliff Section 338 stack:

MFN base duty: 51,000. Section 338 at 50 percent under 9903.03.13 on 750,000 CIF: 375,000. MPF: 634.62. Total federal cost post-cliff: approximately 426,635.

Delta: 375,000. On a single 40-foot refrigerated container.

Scenario 1: Deferred Summary election made properly.

• Wednesday August 19 4:00 PM EDT: broker files 3461 with immediate delivery special permit indicator via ABI, referencing the standing 142.21 authorization at Highgate Springs. ACE accepts.
• Friday August 21 10:00 AM EDT: broker files 7501 entry summary in proper form via ABI, with estimated duties at MFN base 6.8 percent (51,635 tendered). 141.68(c) election language captured in the entry summary record. ACE returns Summary Acceptance at 10:23 AM EDT August 21.
• Saturday August 22 6:00 AM EDT: truck arrives at Highgate Springs CVIS lane. Physical arrival timestamp is 6:00 AM.
• Rate-lock instant per 141.68(c): 10:23 AM EDT August 21. Pre-cliff. 9903.03.13 does not attach. Total federal cost: 51,635.
• Preserved: 375,000 duty delta.

Scenario 2: Deferred Summary election attempted but 7501 filed at 5:45 AM EDT August 22 (broker delayed the filing to Saturday morning).

• Truck arrives at Highgate Springs CVIS lane at 6:00 AM EDT August 22. Physical arrival 15 minutes after 7501 filing.
• CBP contests the 141.68(c) election validity: the 7501 filing was 15 minutes before arrival, within the operational uncertainty window. CBP reviews ABI transmission log and CVIS camera timestamp. If CBP concludes the truck was already staged in the immediate approach to the CVIS lane at 5:45 AM (arrival within port limits under CBP's operational interpretation), the election fails.
• Rate-lock instant defaults to 141.68(a): rate at time of arrival, 6:00 AM EDT August 22. Post-cliff. 9903.03.13 attaches. Total federal cost: 426,635.
• Downside: 375,000 duty assessment based on 15-minute timing exposure.

Scenario 3: no Deferred Summary election, standard release procedure.

• Truck arrives at Highgate Springs 6:00 AM EDT August 22. Broker files 3461 for release at 6:15 AM. 7501 filed post-release at 6:45 AM.
• Rate-lock instant per 141.68(a): 6:45 AM EDT August 22, post-cliff. 9903.03.13 attaches. Total federal cost: 426,635.

The delta between Scenario 1 and Scenario 3 is 375,000, entirely preserved by the Deferred Summary election workflow if executed by Friday morning with a documented 4-plus hour timing buffer.

Which cargo is Deferred Summary suitable for

Deferred Summary election is the right tool when:

• High-value Canadian cargo (dairy, alcohol, MV, or Annex II wood and consumer scope) is in transit with ETA between 12:01 AM EDT August 22 and roughly 48 hours after cliff.
• Broker has established immediate delivery authorization at the port of entry under 19 CFR 142.21.
• Importer has continuous customs bond capacity to tender estimated duties at the pre-cliff rate.
• The 4-plus hour timing buffer between 7501 filing and physical arrival is achievable.

It is not the right tool when:

• Cargo has already arrived within port limits (the 141.68(c) election requires pre-arrival filing).
• Port director does not have a Deferred Summary practice pattern (LA/LB, NY/NJ generally OK, Detroit and some Great Lakes ports historically restrictive).
• Broker cannot data-complete the 7501 by Friday afternoon (missing valuation, missing HTS line, missing party identifiers).
• Continuous customs bond capacity is inadequate to tender the estimated duties at any rate.

For cargo that does not fit Deferred Summary, the FTZ Privileged Foreign election under 19 CFR 146.41(e) is the parallel tool. See Form 214 Privileged Foreign election mechanics. For the ACE Summary Acceptance timing mechanic on truck crossings, see Section 338 Canada T-1 ACE Summary Acceptance vs 3461 transmission.

Protest posture if election is contested

If CBP contests the 141.68(c) election validity and assesses at the post-cliff rate, the importer's protest under 19 CFR Part 174 needs:

• ABI transmission log for the 7501 filing with second-level timestamp.
• ACE Summary Acceptance return timestamp.
• Refrigerated truck GPS log establishing physical location at the 7501 filing timestamp (typically well outside port limits).
• Written 141.68(c) election language on the entry summary record.
• CBP port director's Deferred Summary authorization documentation (either standing 142.21 authorization or one-off special permit).

The protest window is 180 days from liquidation per 19 CFR 174.12(e). File the 175 further-review request within the same window if the CBP protest denial cites operational uncertainty at the 15-minute margin. See 1520(d) vs 174 protest decision tree for the pathway comparison.

Bottom line

19 CFR 142.16 Deferred Summary election, executed Friday morning August 21 for cargo arriving Saturday August 22 or Sunday August 23, is a legitimate procedural tool to decouple entry summary date from arrival date and lock the pre-cliff rate. It is not a loophole. It is the plain-text application of 141.68(c) and 141.69.

For a 750,000 CIF Quebec cheese consignment on a truck routed to Boston via Highgate Springs, the workflow preserves 375,000 in duty exposure. Broker execution has to be clean: 7501 filed by Friday morning with a 4-plus hour arrival buffer, 141.68(c) election language in the record, estimated duties tendered at pre-cliff rate, port director's Deferred Summary authorization confirmed in writing. Miss any of these steps and the cliff attaches at 12:01 AM Saturday.