USPS 2026 Shipping Price Changes: Update Your Rates

USPS changed rates. Again.

If you ship with USPS, 2026 is not a “set it and forget it” year. New package prices took effect on January 18, 2026, and another temporary increase is scheduled for April 26, 2026, pending review.

The first big change hit in January

USPS said its 2026 Shipping Services changes would raise prices by about 6.6% for Priority Mail, 5.1% for Priority Mail Express, 7.8% for USPS Ground

Advantage, and 6.0%

for Parcel Select.

Ground Advantage got one of the biggest jumps

That matters for ecommerce sellers because Ground Advantage is often the go-to service for lightweight domestic orders. USPS specifically listed it among the services getting a January 2026 increase.

Then came the April surprise

On March 25, 2026, USPS announced a time-limited 8% increase on base postage prices for Priority Mail Express, Priority Mail, USPS Ground Advantage, and Parcel Select.

This one is temporary—but real

USPS says the temporary increase would begin at midnight Central Time on April 26, 2026 and stay in place until midnight Central Time on January 17, 2027, if approved.

Which services are affected?

The temporary April change targets USPS’s main domestic competitive package products: Priority Mail Express, Priority Mail, USPS Ground Advantage, and Parcel Select. USPS also said First-Class stamps are not affected.

Your store rates may be wrong right now

If your shipping rules, flat-rate thresholds, or profit margins were set before these 2026 changes, you may be undercharging customers—or quietly eating margin on every order. This is an inference based on USPS’s published increases to package services.

Update these 3 things first

Check your live carrier rates, your free shipping threshold, and your product-level margins. Those are usually the first places USPS increases show up in ecommerce operations. This is operational advice based on the USPS price changes above.

Flat Rate prices changed too

USPS Notice 123 shows updated 2026 prices now in effect, including examples like Priority Mail Flat Rate Envelope at $11.95 and Priority Mail Padded Flat Rate Envelope at $12.95, effective January 18, 2026.

Smart sellers update before margins slip

The brands that stay profitable in 2026 will not just “watch shipping costs.” They’ll refresh checkout rates, pricing rules, and packaging decisions before USPS changes eat into every order. This is an inference based on the announced USPS shipping increases.