Use this logistics calculation for a transparent shipment, inventory, warehouse, customs, packaging, carrier, or service-level estimate when the governing units and business rules are explicit.

Flat deduction

Flat deduction per return in currency units.

Item price

Item price in currency units.

Restocking fee percent (%)

Restocking fee as percent of the item price.

Compute the net refund after a percentage restocking fee and any flat return deduction, clamped at zero with the shortfall reported. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Shortfall

Amount by which deductions exceed the price; 0 when none.

Net refund

Net refund owed to the customer, never below zero.

Restocking fee

Restocking fee amount in currency units.

• Carrier tariffs, customs rules, dangerous-goods requirements, hours-of-service rules, surcharges, port terms, dimensional divisors, and service definitions vary by jurisdiction, contract, date, mode, and commodity. A calculation is not a booking, classification, or compliance determination.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Verify current carrier and authority documents, retain shipment dimensions and timestamps, test boundary cases, and reconcile estimates against invoices and operational scans.

• Certificate of Origin FTA Threshold Check

  Screen achieved regional value content against an agreement-specific threshold and optional shortfall allowance. Only use the allowance when the applicable rule explicitly permits it in RVC percentage points; this calculation does not establish preferential origin by itself.

• Container Per Diem Charges Computation

  Multiply chargeable detention or demurrage days by the daily per-diem rate and apply an optional total charge cap, where a cap of zero means uncapped.

• Customs Broker Fee per Entry Lookup

  Average brokerage spend per customs entry, apply any contractual per-entry minimum, and compare against an indicative benchmark fee that should be overridden with your quoted rate.