USPS Priority Mail International to Guatemala: Flat Rates 2026

USPS Priority Mail International is the only fully-transparent shipping option in the USA-to-Guatemala market. Unlike every diaspora courier we reviewed, USPS publishes its full price list: to Guatemala the flat-rate boxes cost $52.20 small, $102.55 medium, $132.05 large, the same at every US post office. It is not the cheapest way to move weight to Guatemala (a casillero is cheaper per pound at every weight we modelled), but it is the baseline that needs no account and no middleman.

Verification status: Prices from USPS Notice 123, the official Price List effective 12 July 2026, read 23 September 2026. Guatemala is Priority Mail International flat-rate price group 8, weight price group 10, maximum weight 44 lb. Transit time estimates cross-checked with the USPS country guide and real-world Guatemalan postal system observations.

Who writes this: We’re Guatemala Life, a Guatemala-based team. We observe USPS Priority Mail International packages arriving into Correos de Guatemala every week. The Guatemala-side reality (how the postal system handles final delivery, when tracking goes dark, what triggers SAT duty collection at the post office counter) is what we report firsthand. US-side USPS rates and rules come from USPS.com directly.

The trust advantage: USPS is the United States Postal Service, a federal government operator. You can’t get defrauded by a USPS “courier.” The rates are published. The tracking works up to the Guatemala handoff. If you’re uncertain about any diaspora courier, mailing at a US Post Office is the safest baseline.

Flat-rate pricing (USPS Notice 123, effective 12 July 2026)

Correction (23 September 2026): earlier versions of this page gave USPS flat-rate prices of $33.75 / $61.80 / $75.15, commercial prices of $32.66 / $59.69 / $73.24, and a 70 lb weight limit. $33.75 / $61.80 / $75.15 are USPS’s Canada prices; Guatemala is in flat-rate price group 8 ($52.20 / $102.55 / $132.05) and its maximum weight is 44 lb (USPS Notice 123, effective 12 July 2026). We removed the commercial figures because we could not source them. See our corrections policy.

Weight-based Priority Mail International: a box that isn’t flat-rate is priced by weight, and Guatemala is weight price group 10. Retail prices from Notice 123:

Nothing over 44 lb can go to Guatemala by Priority Mail International. You can also price a specific parcel in the USPS postage price calculator with destination country Guatemala.

In Quetzales: at Banguat’s reference rate of Q7.63357 per US dollar (23 September 2026):

• Small box $52.20 ≈ Q398
• Medium box $102.55 ≈ Q783
• Large box $132.05 ≈ Q1,008

See today’s exchange rates for current conversion.

Transit time

Important: the 6-10 day advertisement is the USPS side only. Real delivery at the recipient’s address depends on Correos de Guatemala’s schedule, which is often slower — especially in rural areas outside Guatemala City. Budget 14 business days for safety on any time-sensitive shipment.

What we see on the Guatemala side: USPS tracking goes dark when the package enters Correos de Guatemala, somewhere between “arrived at destination” and “out for delivery.” The package isn’t lost — it’s just that Correos’s tracking does not sync back to USPS in real time. If a box shows “arrived” but no delivery update after 5 days, don’t panic. Call Correos (+502 2279-5000) or check your local Correos office.

Flat-rate box per-pound math (USPS vs a casillero)

The Medium Flat Rate Box gets cheaper per pound the more you pack in, up to its 20 lb limit. Here it is next to Quick Box USA’s Standard casillero plan ($3.30/lb plus a $6.00 airport handling charge per package at 4 lb or more, no plan fee, verified 23 September 2026):

The rule: at Guatemala’s price-group-8 rates, USPS is not the cheapest option per pound at any of these weights. Casillero rates exclude DAI and IVA import taxes, but a USPS parcel pays those on arrival too, so the gap holds. Choose USPS for what it does well: published prices, no casillero account, drop-off at any US post office, and a federal operator.

Prohibited and restricted items

USPS country page for Guatemala lists the following as prohibited or restricted:

Prohibited (will be rejected or seized):

• Firearms and ammunition
• Explosives, fireworks, flammable materials
• Perishable biological substances
• Live animals
• Alcoholic beverages over 24% alcohol
• Radioactive materials
• Counterfeit currency or goods
• Narcotics and controlled substances
• Human or animal remains

Restricted (require special paperwork or declaration):

• Lithium batteries (tight IATA rules)
• Beverages under 24% alcohol (limited quantity, declaration required)
• Prescription medicines (MSPAS personal-use import permit: the prescription plus a letter from the treating doctor in Guatemala)
• Used clothing in commercial quantities (Guatemala restricts commercial used-clothing imports)
• Jewelry, gold, silver (declaration and insurance recommended)
• Plants and seeds (MAGA-OIRSA phytosanitary review)

Customs and duty reality on the Guatemala side

USPS does NOT pre-pay duty. On arrival in Guatemala, SAT reviews the customs declaration form (CN22 for packages under 4 lb, CN23 for heavier packages) and assesses duty.

• Any purchased goods, whatever the value: DAI by tariff line on the CIF value, then 12% IVA on CIF + DAI. Phones, laptops and cameras are 0% DAI, so just the 12% IVA; TVs, game consoles and clothing are 15% DAI; beer is 40%. There is no tax-free threshold for purchases.
• Non-commercial parcel sent by family, up to US$500: exempt from DAI and IVA, once every six months per recipient (CAUCA art. 116; RECAUCA art. 596). Marking a box “gift” does not by itself make it one.
• Duty collection: the mail carrier collects at delivery, OR you pay at the Correos office when picking up.

Use our import duty calculator to estimate the tax on your specific shipment before sending.

Gotchas

1. Declared value matters — fill the customs form accurately. Under-declaring risks seizure. Over-declaring triggers unnecessary duty. Declare the real replacement cost.
2. Tracking goes dark in Guatemala. Updates can stop after the package enters Correos de Guatemala.
3. Flat-rate box weight is strict: 4 lb for the envelope and small box, 20 lb for medium/large. An overweight box can’t go at the flat rate; it is priced by weight instead (group 10: 20 lb is $186.60).
4. Guatemala’s postal delivery is slower outside Guatemala City. If the recipient is in Quetzaltenango, Huehuetenango, Petén, or rural areas, expect an extra 3-5 days on last-mile delivery.
5. “If Undeliverable” default is RETURN. USPS’s default if the recipient can’t be reached is return-to-sender — which costs the sender the return postage. Make sure the recipient address is correct and someone is available to receive.
6. Customs forms must be filled in English OR Spanish. USPS accepts both. Spanish is often faster through Correos de Guatemala.
7. Insurance: the first $200 is included. USPS Notice 123 charges no fee for Priority Mail International merchandise insurance up to $200, $13.85 for $200.01-$300, $35.95 for $800.01-$900, and $3.70 per $100 over $900 (USPS retail price, read 2026-10-01). For packages worth more than $200, add it.

How USPS compares to the market

Quick Box figures are $3.30/lb plus $6.00 handling and exclude DAI and IVA (a USPS parcel pays those on arrival too).

USPS’s advantage: published prices, no casillero account needed, mail from any US post office, federal government operator.

USPS’s disadvantage: more expensive per pound than a casillero at every weight we modelled, tracking goes dark after entering Correos de Guatemala, slower than DHL/FedEx, and nothing over 44 lb.

Who should use USPS Priority Mail International

• First-time senders who don’t have a casillero account
• Senders without a casillero drop-off nearby, since any US post office accepts Priority Mail International
• Anyone who values federal-government-operator trust over a small diaspora courier’s quote
• Anyone who wants the price fixed in advance: Flat Rate Envelope $50.55, Small box $52.20, Medium $102.55, Large $132.05

Who should NOT use USPS

• Amazon shoppers — casillero (Quick Box, CPX, Guatebox) beats USPS for regular US online shopping
• Anyone optimising on cost — a casillero is cheaper per pound at every weight we modelled
• Large boxes over 20 lb — USPS weight prices climb to $302.80 at 44 lb and it takes nothing heavier; use a casillero or a diaspora courier
• Urgent time-sensitive shipments — use DHL or FedEx (2-5 days, guaranteed tracking)
• Commercial bulk — King Express Commercial tier at $3.50/lb for 220+ lb beats USPS

How to ship

1. Pack the box inside any USPS flat-rate box (pick up free at the post office). Flat-rate boxes are provided free.
2. Fill out customs form: CN22 for small flat-rate box (under 4 lb), CN23 for medium/large flat-rate box (under 20 lb). Declare contents and value in English or Spanish.
3. Bring to the Post Office counter OR schedule a free carrier pickup if you have regular mail service.
4. Pay at counter (retail rate) or print postage online via Click-N-Ship.
5. Get tracking number — this is your USPS tracking ID. Check status at USPS tracking.
6. Share tracking with recipient so they can monitor arrival.

Related pages

• USA to Guatemala Courier Directory — Full 4-tier comparison of couriers
• Quick Box USA — Cheapest per-pound casillero alternative
• King Express — LA-hub alternative for larger boxes
• Gigante Express — Miami + LA alternative with pre-paid duties
• Chapines Cargo — LA Koreatown family-box alternative
• Ship a box from USA overview — High-level overview
• Import duty calculator — Estimate SAT DAI + IVA
• Moving from USA hub — Full relocation pipeline

Sources

Last verified: 23 September 2026.

• USPS Notice 123, Price List (effective 12 July 2026) — Guatemala price groups (flat rate 8, weight 10), 44 lb maximum, flat-rate and weight prices, box inside dimensions
• Quick Box USA plans — Standard $3.30/lb plus handling, Premium 33 lb for $99 + IVA
• USPS Priority Mail International official page — flat-rate prices, box dimensions, weight limits
• USPS Mail & Shipping Services — service categories
• USPS Postage Price Calculator — Guatemala-specific weight-based rates
• USPS Individual Country Listings — Guatemala — Guatemala country-specific prohibitions and restrictions
• Correos de Guatemala — Guatemalan postal system (last-mile delivery)
• SAT Guatemala Aduanas — import duty rules

Corrections & updates

USPS adjusts its prices periodically; the current Notice 123 price list took effect 12 July 2026. If the rates above don’t match USPS.com’s current pricing, email us and we’ll update within 48 hours. Guatemala-side delivery observations (Correos de Guatemala routing, tracking visibility) are likewise welcome.

Prices verified 23 September 2026 from USPS Notice 123 (effective 12 July 2026). Guatemala-side observations from our own delivery tracking at Correos de Guatemala. Confirm current pricing at usps.com before mailing.