Shipping Markups: Cost, Customer Rate, and Margin Explained

Suppose the carrier charges your company $85 for a shipment and the customer is charged $100. Is that a 15% margin? Not exactly. This is where shipping conversations get messy because markup, margin, carrier cost, and customer charge are often used interchangeably.

Start with four separate concepts

Markup percentage

Markup is generally calculated against cost. In the $85-to-$100 example, the markup is $15 ÷ $85, or about 17.65%.

Margin percentage

Margin is generally calculated against the selling price. In the same example, the margin is $15 ÷ $100, or 15%.

Why software should separate these values

If employees manually edit rates or calculate charges in spreadsheets, it becomes difficult to explain later why a customer paid a particular amount. A controlled system can preserve the underlying carrier result, the pricing rule applied, and the final customer-facing charge as separate data points.

One percentage does not fit every business

Some businesses pass through transportation cost. Some charge published rates. Some use contractual customer pricing, handling charges, minimums, or service fees. The correct model depends on the customer agreement, carrier terms, accounting treatment, and applicable law.

Make the rule explicit

The important operational improvement is consistency. Define how customer shipping charges are produced, who can override them, and what gets recorded. That turns shipping pricing from an employee judgment call into a repeatable business rule.