Under absorption costing,fixed overhead costs are excluded from product costs.

Absorption Costing

A pricing approach that encompasses all costs associated with manufacturing—including direct materials, direct labor, and all manufacturing overheads, both variable and fixed, in a product's cost.

Fixed Overhead Costs

Costs associated with production that do not change with the level of output, such as rent, salaries, and insurance.

Product Costs

Costs that are directly associated with the manufacture of products, including raw materials, labor, and overhead.