Import costs · 3 min read
FOB, CIF and U.S. customs value: what should you enter?
FOB and CIF allocate seller and buyer responsibilities for maritime transport; neither is a universal formula for U.S. customs value. Start with the price actually paid or payable, examine required additions and permitted exclusions, and document each item before entering a value.

Read the sale term as a contract term
FOB and CIF are Incoterms for sea and inland-waterway carriage. They assign delivery, risk and certain cost responsibilities. Read the named port and the contract version: “FOB” without a place and scope does not explain the entire invoice.
| Question | FOB offer | CIF offer |
|---|---|---|
| What is included in the supplier price? | Check the named loading port and supplier obligations | Check named destination port, freight and insurance terms |
| What must still be quoted? | Main carriage, insurance and later legs as applicable | Later legs and charges outside the agreed sale term |
| Does the term fix customs value? | No; review transaction and adjustments | No; review transaction and adjustments |
Reconcile the customs-value inputs
Under the transaction-value rules, the price actually paid or payable can require additions such as buyer-paid packing, selling commissions, assists, certain royalties and proceeds of later resale that accrue to the seller, when the legal conditions are met. Separately identified transportation or insurance after the relevant export point may be excluded under applicable rules. Foreign inland freight can depend on the facts, so do not use a universal “subtract all freight” shortcut.
- Collect the purchase order, contract, final invoice and proof of any separate freight and insurance charges.
- Ask about buyer-supplied tools, molds, materials or other assists and any royalty or commission arrangement.
- Have the broker document why each inclusion or exclusion applies to this sale.
Enter one reviewed value
Suppose two offers have different sale terms. Do not compare their invoice figures as if they included identical transport. First map each contract to the same arrival point; then obtain a shipment-specific valuation review. Use that reviewed value as the duty-estimate input and keep the supplier price and logistics bills in a separate landed-cost worksheet.
Assumptions and limits
Assumptions
- The example discusses a sale of imported goods where transaction value may apply; actual agreements and payments must be examined.
Costs and duties not included
- No fixed adjustment, freight deduction or calculated customs value is supplied for an individual shipment.
Prepare your own estimate
Use your shipment details to open the existing calculator.
Use digits and a dot, with up to two decimals (for example, 1200.50).
Opening the calculator prepares these inputs. Only pressing Calculate uses a calculation from your plan.
You will need to select the correct HTS code in the calculator before it can estimate duties.
Common questions
Is U.S. customs value always the FOB price?
No. Transaction value depends on the price actually paid or payable and applicable adjustments, not on the three-letter sale term alone.
Can I simply subtract international freight from a CIF invoice?
Only a documented, legally supportable exclusion should be made. Other adjustments and the treatment of foreign inland freight can change the result.
Sources
- Know your Incoterms
U.S. Department of Commerce, International Trade Administration · Checked
- 19 CFR 152.103, transaction value
U.S. Customs and Border Protection / eCFR · Checked
- 19 CFR 141.86, invoice contents
U.S. Customs and Border Protection / eCFR · Checked
- Customs brokers and freight forwarders
U.S. Department of Commerce, International Trade Administration · Checked
- Determine total export price
U.S. Department of Commerce, International Trade Administration · Checked
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