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How do you ship an online sale to an APO, FPO or DPO address?

Ship it at domestic prices, but with a customs form: every APO/FPO/DPO package that weighs 16 oz or more or contains goods needs one, so every sale does. Make the form online with the label; a handwritten one means a trip to the counter.

Leave any foreign city or country out of the address, keep used electronics, spare lithium batteries and flammable liquids out of the box, and keep DPO packages within 27 x 14 x 14 in.

Rates verified on

Postage in the examples is from Notice 123 effective Oct 4, 2026, which includes USPS's temporary holiday prices for Ground Advantage and Priority Mail until 12 a.m. CT Jan 17, 2027. The fees quoted here are the same as in the July 12, 2026 edition, before the holiday prices began.

The rule, in USPS's words

“The mailpiece weighs 16 ounces or more (regardless of its contents, value, shape, or mail class). The mailpiece contains goods (regardless of weight, shape, or mail class).”

DMM 703.2.7.3, read Oct 19, 2026

“Mail showing in the recipient’s address the name of a foreign city and country, in addition to the designation and address of an APO, FPO, or DPO, is subject to the postage prices and conditions for international mail.”

DMM 703.2.3.2, read Oct 19, 2026

“Ship to an APO/FPO/DPO and you’ll pay domestic prices.”

USPS, Military and Diplomatic Mail, read Oct 19, 2026

“Used, damaged, and defective electronic devices (excluding devices that are new in original packaging, and manufacturer-certified new or refurbished devices) containing lithium batteries are prohibited (refer to 623).”

Publication 52, Packaging Instruction 9E, read Oct 19, 2026

“Lithium metal and lithium-ion cells and batteries not packed in equipment (i.e., batteries packed with equipment or batteries sent separately from equipment) are prohibited.”

Publication 52, Packaging Instruction 9E, read Oct 19, 2026

“Any item bearing a customs form and paid with only postage stamps.”

DMM 703.2.5.2, read Oct 19, 2026

What it costs, with examples

Priority Mail Flat Rate to military addresses, Notice 123 effective Oct 4, 2026.
BoxOnlinePost Office
APO/FPO/DPO Large Flat Rate Box (to a military address)$31.34$34.65
Large Flat Rate Box$32.75$36.10
Medium Flat Rate Box$22.02$25.80
Small Flat Rate Box$12.95$14.65
What can go to an APO/FPO/DPO address. Publication 52, Packaging Instructions 3A and 9E; USPS restrictions page. Destination-country and Department of Defense conditions also apply.
ItemTo APO/FPO/DPO
Used phone or laptop (lithium battery)prohibited
New phone in original packaging, battery installedmailable within the limits: 4 cells of up to 20 Wh or 2 batteries of up to 100 Wh, no lithium battery marks
Spare lithium batteries, loose or packed with the deviceprohibited
Flammable liquids packed under Packaging Instruction 3A (flashpoint above 20°F, under 100°F)prohibited
Hand sanitizerprohibited

Edge cases

  • Address format: name, then a PSC, UNIT, CPR, OPC or UPR line with the box number, then APO, FPO or DPO with AA, AE or AP and the ZIP Code (DMM 703.2.3.1). "Any Service Member" is no longer allowed.
  • Drop-off: a package with a computer-generated customs form and printed postage can go in a collection box or a pickup; one with a handwritten form, or paid only with stamps, must go over a counter (DMM 703.2.5).
  • The military Large Flat Rate Box pays the regular Large Flat Rate price if sent to a non-military address (DMM 123.1.4.2).
  • Claims: insured APO/FPO/DPO mail sent by Priority Mail, First-Class Mail or Ground Advantage retail can be claimed from 45 days to 1 year after mailing (DMM 609.1.4).
  • Box R retirees: APO and FPO mail to military or State Department retirees (Box R) is limited to 16 oz (DMM 703.2.2.2).
  • Lithium consignments to APO/FPO/DPO are limited to two packages (Packaging Instruction 9E).
  • Hazmat in general: Publication 52, 611 sends you to the International Mail Manual and Department of Defense conditions as well.

What to do

  • Copy the buyer's military address exactly, with no city or country names.
  • Make the label and customs form online (Click-N-Ship or your label tool) and describe the contents in detail.
  • Check the item against the prohibited list before you accept the sale.

Questions

Do I need a customs form to ship to an APO?

Yes for any sale: a customs form is required when the package weighs 16 oz or more or contains goods (DMM 703.2.7.3).

Is shipping to an APO international?

No. You pay domestic prices (USPS), unless the address also names a foreign city and country, which makes it international mail (DMM 703.2.3.2).

Sources

Rates verified on from each official page below.

Free 1-page Reseller Cheat Sheet: fees on 8 platforms, Media Mail and stamp prices

What each platform takes from a $10, $25 and $50 sale, Media Mail 1-10 lb, Ground Advantage to Zones 1, 5 and 8, and the Forever stamp, on one printable page. The link appears as soon as you sign up.