StoreCalc — Rule updates

Certain postal entry requirements deferred to January 20, 2027

Thu, 22 Oct 2026 00:00:00 GMT

Published 2026-10-22; Effective 2027-01-20; Checked 2026-10-23

The effective date here is the deferred compliance date.

Compliance for certain postal entry requirements involving partner agencies, HTS Chapters 98/99 or specified duty-free claims is deferred to 2027-01-20. The extension does not restore the $800 exemption; budget for applicable duties and confirm the entry route with your carrier.

New fiscal-year MPF limits

Fri, 31 Jul 2026 00:00:00 GMT

Published 2026-07-31; Effective 2026-10-01; Checked 2026-10-22

Formal-entry MPF has a $34.58 minimum and $670.86 maximum; automated informal entries not prepared by CBP cost $2.77. Allocate the shipment fee across units rather than charging the minimum on every item.

Section 301 forced-labor tariffs take effect

Thu, 23 Jul 2026 00:00:00 GMT

Published 2026-07-23; Effective 2026-07-24; Checked 2026-10-22

Among origins covered here, China, Vietnam, Thailand, Türkiye and the Philippines face an additional 12.5%; Bangladesh, India, Cambodia, Pakistan, Indonesia and Sri Lanka face 10%. This is an additional duty layer; consult the notice for product exemptions and transit provisions.

USPS uses divisor 139 and rounds dimensions up

Thu, 25 Jun 2026 00:00:00 GMT

Published 2026-06-25; Effective 2026-07-12; Checked 2026-10-22

USPS now uses divisor 139 and rounds length, width and height up to whole inches; rectangular parcels use DIM only above 1,728 cubic inches after rounding. The same package may bill at a higher weight; this site’s USPS row models Priority Mail retail weight pricing.

New informal entry process for international mail

Wed, 24 Jun 2026 00:00:00 GMT

Published 2026-06-24; Effective 2026-07-24; Checked 2026-10-22

The exemption suspension took effect on 2026-06-24; the date above applies to the remaining provisions.

The postal de minimis suspension was codified from June 24; the remaining provisions, including a new informal entry process for eligible mail, took effect July 24. Some entry requirements have a transition period; see the October 22 update for the latest compliance date.

Nonpostal de minimis suspension enters regulations

Wed, 24 Jun 2026 00:00:00 GMT

Published 2026-06-24; Effective 2026-06-24; Checked 2026-10-22

CBP codified the indefinite suspension for nonpostal merchandise valued at $800 or less, requiring formal or informal entry procedures. Budget for duty and clearance when shipping apparel directly by express carrier.

Duty-free de minimis suspension continues

Mon, 23 Feb 2026 00:00:00 GMT

Published 2026-02-23; Effective 2026-02-24; Checked 2026-10-22

CBP confirmed the continuing suspension for all origins: an ordinary apparel parcel is not duty-free merely because its value is $800 or less. Postal and nonpostal entry routes differ; temporary rates in this historical notice are not today’s rates.

Supreme Court rules IEEPA does not authorize tariffs

Fri, 20 Feb 2026 00:00:00 GMT

Published 2026-02-20; Effective 2026-02-20; Checked 2026-10-22

The effective date here is the decision date, not a customs collection cutoff or refund-processing date.

The Supreme Court held that IEEPA does not authorize presidential tariffs; current calculations here exclude that layer. This does not remove ordinary or Section 301 duties or restore duty-free low-value shipments.

FedEx rounds fractional dimensions up

Fri, 18 Jul 2025 00:00:00 GMT

Published 2025-07-18; Effective 2025-08-18; Checked 2026-10-22

FedEx rounds each fractional measurement up to the next whole inch or centimeter across all regions. A small increase in sealed dimensions can raise DIM weight; use the units required by your service.