Price note: USPS prices are from its Notice 123 price list (effective Oct. 4, 2026), which includes temporary increases that USPS says end Jan. 17, 2027. UPS raises rates an average of 5.9% on Dec. 21, 2026, and FedEx on Jan. 4, 2027. Check current prices before you set your shipping charges.

Small Business Shipping Guide: Save Money on Every Shipment

For most small businesses, shipping costs come down to five levers:

Buying postage at commercial (online) prices instead of at the counter.
Choosing the right service for each package’s weight and size.
Keeping boxes small enough to avoid dimensional-weight and oversize charges.
Shipping from closer to your customers.
Using multiple carriers where each is cheapest.

None requires a big shipping volume to start. USPS’s online commercial prices are open to anyone who buys a label through USPS Click-N-Ship or an authorized postage service. For a 20 lb box going cross-country (Zone 8), Ground Advantage costs $42.14 that way, compared with $72.15 at a Post Office counter, as of October 2026.

This guide walks through each lever with current carrier figures and links to our more detailed comparisons.

Key Takeaways

Never pay counter prices for regular shipments. USPS commercial prices are lower than retail for Ground Advantage and Priority Mail at almost every weight and zone.
Match the service to the package. Ground Advantage covers most packages under 70 lb, Priority Mail cubic pricing suits small, heavy items, and Flat Rate suits dense items going far.
Right-size your boxes. USPS, FedEx and UPS account rates all use a dimensional-weight divisor of 139.
Compare UPS and FedEx for heavier parcels, and count their surcharges as part of the price.

Lever 1: Buy Postage at Commercial Prices

USPS prices fall into two groups. Retail is what you pay at the Post Office counter. Commercial is what you pay through Click-N-Ship on usps.com or through PC postage and shipping software. USPS’s shipping page says that when you “ship online with Click-N-Ship,” you get lower Commercial Rates. It also says businesses “can get additional savings by opting in to the Business Rate Card.”

Here’s how much commercial pricing saves, using Notice 123 prices as of October 2026:

Package	Retail	Commercial (online)	Savings
Ground Advantage, 8 oz, Zone 5	$9.35	$8.24	12%
Ground Advantage, 5 lb, Zone 5	$18.85	$14.53	23%
Ground Advantage, 20 lb, Zone 8	$72.15	$42.14	42%
Priority Mail, 5 lb, Zone 5	$24.20	$23.27	4%
Priority Mail Medium Flat Rate Box	$25.80	$22.02	15%

Third-party platforms add batch printing, store integrations and multi-carrier rate shopping. As of November 2026:

Pirate Ship says it has “no monthly fees, markup or hidden costs.”
ShipStation plans start at $14.99 a month for 50 shipments.
Shippo’s free plan covers up to 30 labels a month.

Our Stamps.com vs. Pirate Ship vs. ShipStation comparison covers these platforms in detail. USPS also lists Stamps.com, Endicia, PitneyShip, Pure Post and EasyPost among its third-party postage vendors.

USPS includes other things that matter to a small seller. Its business shipping page lists “no surcharges for residential delivery,” free regular Saturday delivery, free Priority Mail and Priority Mail Express boxes delivered to you, and free package pickup for select products.

Lever 2: Match the Service to the Package

As of October 2026, the main USPS options for business parcels are:

Ground Advantage (2-5 days) for most packages up to 70 lb. Online, a parcel under 1 lb costs $7.33 to $8.95 depending on zone, and $100 of insurance is included.
Priority Mail (2-3 days) when speed matters, or with cubic pricing for small, heavy items. Cubic pricing is commercial only, for parcels of 0.5 cubic foot or less, up to 20 lb and no longer than 22 inches. It’s priced by size and zone, not weight.
Ground Advantage cubic pricing, for eligible commercial customers, covers parcels up to 1 cubic foot and 20 lb, again with a 22-inch length limit.
Priority Mail Flat Rate for dense items going far. The Medium box costs $22.02 and the Large box $32.75 online, up to 70 lb to any zone.
Parcel Select, a commercial product for shippers who drop mail at destination facilities, with a 50-piece minimum per mailing for Destination Entry.

For packages over about 25 lb, compare UPS and FedEx as well. During USPS’s holiday pricing, FedEx and UPS Ground retail prices beat USPS for many 26 to 50 lb parcels, while FedEx and UPS add Additional Handling charges above 50 lb. Our heavy package guide has the full comparison, and FedEx vs. UPS vs. USPS compares the carriers overall.

Lever 3: Right-Size Your Packaging

Dimensional (DIM) weight charges large, light boxes as if they were heavier:

USPS applies DIM weight to Priority Mail, Priority Mail Express, Ground Advantage and Parcel Select parcels larger than 1 cubic foot (1,728 cubic inches). Since July 12, 2026, the divisor for rectangular parcels has been 139: length x width x height ÷ 139. DMM 223 still uses 166 for nonrectangular parcels.
FedEx divides by 139 for U.S. packages.
UPS uses 139 in its daily (account) rates and 166 in its domestic retail rates.

USPS’s own example: a 16 x 12 x 10 inch box (1,920 cubic inches) weighing 5 lb has a DIM weight of 14 lb (1,920 ÷ 139 = 13.81, rounded up), so you pay the 14 lb price. Now suppose the item inside weighs 3 lb and fits a snug 10 x 8 x 6 inch box (480 cubic inches). That box is under USPS’s 1-cubic-foot threshold, so you pay for the actual 3 lb. At FedEx and UPS account rates, the smaller box rates at 4 lb (480 ÷ 139 = 3.45, rounded up), compared with 14 lb for the larger box.

Other packaging rules to watch:

Poly mailers for soft goods keep packages small and light. FedEx and UPS add an Additional Handling charge to soft packs over a certain size: at FedEx, more than 18 inches long, 13 inches on the second side or 5 inches high. USPS adds a $4.50 nonstandard fee to polybags whose contents may shift or roll.
Long boxes cost extra. USPS adds $4.50 for parcels 22 to 30 inches long, and more above 30 inches.
Free Priority Mail boxes can only be used for Priority Mail. USPS says that “if you use a Priority Mail box, you have to pay for Priority Mail.”

For box, mailer and tape options, see our shipping supplies guide.

Lever 4: Ship From Closer to Your Customers

Zones measure distance, and distance drives price. An online Ground Advantage label for a 5 lb box costs $10.41 to Zone 2 and $20.24 to Zone 8 as of October 2026. “Zone skipping” means sending inventory in bulk, by freight or to a fulfillment warehouse, closer to where your customers are, then shipping individual orders a shorter distance. It only pays off when the label savings exceed the cost of moving and storing the inventory. Get freight and warehouse quotes before you commit.

Third-party logistics (3PL) providers store inventory in their warehouses and ship orders for you. Some operate several warehouses, so orders can ship from the one nearest the customer. Compare pick-and-pack, storage and receiving fees as well as postage, since those add up at low volumes.

Lever 5: Use More Than One Carrier, and Price the Surcharges

No carrier is cheapest for every package. A practical setup is to rate-shop each order in your shipping software across USPS, UPS and FedEx.

When you compare, use the full price, not just the base rate:

UPS and FedEx surcharges. Both add weekly fuel surcharges. FedEx’s 2026 Service Guide adds Additional Handling charges of $46 to $58.75 per package for domestic parcels over 50 lb, and much larger oversize charges above 110 lb or 130 inches in length plus girth. Account rates also add residential delivery charges.
USPS. It has no residential surcharge, but nonstandard-size fees apply.

Once your volume grows, UPS and FedEx sales teams can quote account pricing based on your weights, zones and weekly volume. Get proposals from both and compare them on your actual shipments.

Plan Around Rate Changes and Peak Season

Shipping prices change several times a year:

USPS’s temporary holiday prices run through Jan. 17, 2027.
UPS rates rise an average of 5.9% on Dec. 21, 2026, and FedEx’s on Jan. 4, 2027.

Review your free-shipping thresholds and flat shipping charges after each change. Our 2027 rate increase guide and holiday shipping deadlines cover the dates.

Next Steps

Switch counter shipments to online labels, through Click-N-Ship or a postage platform.
Measure your five most-shipped products and find the smallest box or mailer that protects each one.
Check DIM weight and cubic eligibility for each of those package sizes.
Rate-shop heavier parcels across USPS, UPS and FedEx, including surcharges.
Read more: our complete USPS shipping guide, cheapest shipping options guide, and eBay and Etsy seller shipping guide.