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Knowledge Base & Operational DocumentationWhy Does CS-Cart Calculate Shipping Twice on an Order?
An order may show duplicate shipping charges when products ship from multiple locations, a promotion adds a second method, or custom logic applies both per-order and per-item costs.
What to check
Compare cart package grouping, warehouse assignment, shipping methods, product settings, add-on behavior, and final order totals. Test one product, multiple products, and split fulfillment in a staging cart.
Recommended next step
Clarify whether shipping is calculated per package or order, then align configuration and customer-facing breakdown. Validate tax and refunds for each shipment scenario before deploying changes.
How Informatix Systems can help
Informatix Systems provides CS-Cart ecommerce and shipping configuration services. We can assess the affected workflow, trace the likely failure point, and help plan a practical resolution. Contact us with the system involved, when the issue began, and non-sensitive error details.