USPS Pricing Overview

USPS has many different pricing tiers depending on your volume.

  • Retail price - rates at the post office
  • Commercial base pricing
  • Commercial plus pricing
  • Cubic pricing

Commercial Base Pricing

USPS Commercial Base Pricing is the standard discounted rates offered to customers buying and printing shipping labels on It’s a great first step to saving money on shipping for anyone sending shipments with the USPS. 

Commercial Plus Pricing

USPS Commercial Plus Pricing refers to discounted shipping rates for high volume shippers. Commercial Plus Pricing is calculated based on the weight of the package, and which zone it’s traveling to (dependent on the origin address).

To qualify for USPS Commercial Plus Pricing, you need to meet certain shipping volume requirements determined by the USPS. These are the volume requirements for Commercial Plus Pricing:

USPS Service Level Volume Threshold/Agreement
First Class Package Service 5,000 pieces
Priority Mail 50,000 pieces
Priority Mail Express 5,000 pieces

Cubic Pricing

USPS Cubic Pricing is calculated based on the dimensions of the package and zones, not weight. To qualify for cubic pricing, you will have to ship over 50,000 packages a year. 

Cubic pricing only applies to packages up to 20 lbs with all dimensions measuring below 18”. USPS has five cubic levels (0.1 - 0.5) that are always rounded up when calculating cubic pricing.

Cubes are calculated: (H” x W” x L”) / 1728 = USPS Shipping “Cube”

Priority Mail on Shippo are based on a combination of cubic and weight/zone pricing. Since we take in both your package weight and dimensions, we automatically calculate both rates and provide you the better rate of the two.

Dive into alternative USPS shipping methods on our blog.

With Shippo, you can tap right into USPS commercial and cubic pricing instantly upon sign up. It’s free to sign up and compare rates on Shippo. Only pay when you print a shipping label - it’s 5 cents per label plus the cost of the label itself.

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