Cheapest Way to Ship Clothes and Shoes in 2026 (Poly Mailer vs Box)

2026 USPS rate: The cheapest way to ship clothes is usually USPS Ground Advantage in a poly mailer. A T-shirt up to 8 oz costs $8.55 (Zone 2) to $10.20 (Zone 8) at retail, and a 3 lb pair of shoes costs $12.50 to $23.15, under USPS prices effective October 4, 2026.

Quick answer: Ship light clothing in a poly mailer by USPS Ground Advantage and keep it at or under 8 oz, where the price is the same as 4 oz. USPS only uses dimensional weight on parcels larger than 1 cubic foot, while UPS and FedEx apply it to every package, so a 14 x 10 x 5 in. shoe box that weighs 3 lb is billed as 6 lb at UPS and FedEx. For a heavy bundle going far, a Priority Mail Medium Flat Rate Box ($25.80) can beat Ground Advantage retail if the clothes fit.

Sources: USPS prices from the Notice 123 Price List (effective October 4, 2026; these temporary holiday prices for Priority Mail and Ground Advantage are scheduled to end January 17, 2027) and the USPS Mail & Shipping Services page. UPS Ground from the 2026 UPS Rate and Service Guide (Daily Rates, updated September 7, 2026); UPS Ground Saver from the Ground Saver rate sheet (effective May 6, 2026). FedEx Ground from the FedEx Service Guide (effective January 5, 2026, updated September 11, 2026); FedEx Ground Economy from FedEx’s Ground Economy rate files and fees document (effective January 5, 2026). UPS and FedEx amounts are list rates before fuel surcharge.

Cheapest Way to Ship Clothes at a Glance

These are Post Office retail prices. Labels bought through Click-N-Ship or an approved PC Postage platform get lower commercial prices: commercial Ground Advantage up to 15.999 oz runs $7.33 (Zone 1) to $8.95 (Zone 8), and a 5 lb parcel to Zone 8 is $20.24. Full commercial tables are in our USPS Ground Advantage Pricing for Businesses guide.

How Much It Costs to Ship a Shirt

Example: one T-shirt folded into a 10 x 13 in. poly mailer about 1 in. thick, 6 to 8 oz total. At UPS and FedEx the mailer’s dimensional weight is 1 lb, so it bills at the 1 lb rate.

UPS does not publish Ground Saver prices under 1 lb; those are set in each shipper’s contract.

The 8 oz line matters. Ground Advantage retail charges the same at 4 oz and 8 oz, then jumps to the 15.999 oz price. One ounce over 8 oz adds $1.90 in Zone 2, $2.35 in Zone 5 and $3.45 in Zone 8. Weigh it packed.

How Much It Costs to Ship Shoes

Example: a pair of shoes in a 14 x 10 x 5 in. box, 3 lb packed. That box is 700 cubic inches, under USPS’s 1 cubic foot (1,728 cubic inches) threshold, so USPS charges actual weight. UPS and FedEx divide 700 by 139 and round up, so they bill 6 lb.

At 3 lb actual weight, UPS Ground would be $13.38 to $19.14 before the residential surcharge. Before fuel, FedEx Ground Economy at Zone 8 ($22.85) is $0.30 less than Ground Advantage retail, but FedEx adds a weekly fuel surcharge on top and the service is contract-only. This box does not fit a Medium or Large Flat Rate Box.

How Much It Costs to Ship a Box of Clothes

Example: 5 lb of clothes in a 16 x 12 x 6 in. box (1,152 cubic inches). USPS charges 5 lb. UPS and FedEx bill 9 lb dimensional weight.

In Zone 8 the Medium Flat Rate Box is $1.65 less than Ground Advantage retail, but the Medium Flat Rate Box is 11 x 8-1/2 x 5-1/2 in. (or 13-5/8 x 11-7/8 x 3-3/8 in.) inside, so it only works if the clothes fit. The Large Flat Rate Box ($36.10) costs more than Ground Advantage retail at every zone in this example.

Poly Mailer or Box?

For soft clothing, a poly mailer is usually cheaper: it weighs less than a box and stays small.

• USPS dimensional weight starts above 1 cubic foot. Above 1,728 cubic inches, Priority Mail and Ground Advantage charge the greater of actual weight or L x W x H divided by 139. See USPS Dimensional Weight 2026.
• UPS and FedEx use dimensional weight on every package, also with a 139 divisor at list rates. Check your boxes with our dimensional weight calculator.
• Keep it flat and snug. USPS’s nonstandard characteristics fee ($4.50 on Ground Advantage and Priority Mail) lists “other mailable items (including polybags) with contents that may shift, or cause the parcel to roll.”
• Watch length. USPS adds a fee for parcels over 22 in. long; see USPS Nonstandard Fees 2026.

Contract Options: UPS Ground Saver and FedEx Ground Economy

Both are economy residential services that need a carrier contract. UPS Ground Saver (formerly SurePost) list rates start at $13.00 for 1 lb to Zone 2. The rate sheet has no Residential Surcharge line, and UPS says delivery typically takes UPS Ground plus one to two business days. FedEx Ground Economy (formerly SmartPost) charges one flat rate for 1 to 16 oz ($11.99 in Zone 2 to $15.01 in Zone 8) plus a $1.15 Delivery and Returns Surcharge, with delivery typically in 2 to 7 business days. Both add fuel, and contract discounts change the math.

How to Ship Clothes for Less

• Stay under the weight breaks: 8 oz, then each full pound. Ground Advantage rounds any fraction up.
• Plan for January. Current Priority Mail and Ground Advantage prices are temporary holiday prices scheduled to end January 17, 2027. See USPS Peak Season Price Increase 2026-27.

Frequently Asked Questions

What is the cheapest way to ship clothes?

For most single items, USPS Ground Advantage in a poly mailer. A shirt up to 8 oz costs $8.55 to $10.20 at retail (Zones 2 to 8), and less with commercial pricing when you buy the label online.

How much does it cost to ship a shirt?

At USPS retail prices effective October 4, 2026, a shirt in a poly mailer up to 8 oz costs $8.55 to Zone 2, $9.35 to Zone 5 and $10.20 to Zone 8 by Ground Advantage. Over 8 oz it costs $10.45 to $13.65.

How much does it cost to ship shoes?

A 3 lb pair of shoes costs $12.50 (Zone 2), $15.70 (Zone 5) or $23.15 (Zone 8) by USPS Ground Advantage retail. UPS and FedEx bill a 14 x 10 x 5 in. box at 6 lb dimensional weight.

Is it cheaper to ship clothes in a poly mailer or a box?

Usually a poly mailer: it weighs less and stays small. USPS charges dimensional weight only above 1 cubic foot, but UPS and FedEx apply it to every package.

Is a Priority Mail Flat Rate box cheaper for clothes?

Only for heavier packages going far. In our 5 lb example, the Medium Flat Rate Box ($25.80) is cheaper than Ground Advantage retail ($27.45) in Zone 8, but not in Zones 2 or 5.

Related Reading

• USPS Ground Advantage Pricing for Businesses: 2026 Commercial Rates
• UPS Ground Saver 2026: Rates, Delivery Time and Surcharges
• FedEx Ground Economy (SmartPost) 2026: Rates, Transit Time and Fees
• USPS Dimensional Weight 2026: The New 139 Divisor Explained
• USPS Return Label Cost: Ground Advantage and Priority Mail Returns
• UPS vs USPS vs FedEx 2026: When to Use Each Carrier

Get a free shipping invoice audit

D’arrigo Consulting audits UPS and FedEx invoices line by line, including dimensional weight, residential surcharges and whether a cheaper service was available for each package. Request a free invoice audit to see what you can recover.

This article is for informational purposes only. Carrier rates, surcharges, and policies change frequently — always verify current terms directly with the carrier for your specific situation. Have questions? Reach out to us — we're happy to help.