SSLT Global
Trade Documents8 min read

LOI vs ICPO vs SCO, FCO and SPA: Commodity Trade Documents Compared

Compare LOI, ICPO, SCO, FCO and SPA documents, their usual deal stage, legal effect, issuer, purpose and common misuse, with free templates.

By SSLT Global Editorial·Published ·Reviewed against ICC Model Contracts / UNIDROIT Principles of International Commercial Contracts / UCP 600 (ICC Publication 600), September 2026
Which document comes first?
The usual commodity-deal sequence is seller SCO, buyer LOI or ICPO, seller FCO, then a negotiated SPA. SCO, LOI, ICPO and FCO record intent or offers at different stages; the signed SPA normally becomes the main binding contract. No preliminary document proves funds, stock or bank commitment by itself.

LOI vs ICPO vs SCO, FCO and SPA at a glance

DocumentIssued byTypical stageLegal effectMain purposeCommon misuse
SCOSoft Corporate OfferSellerInitial seller indicationUsually non-bindingShows indicative product, quantity, price basis and procedurePresented as proof that stock or allocation exists
LOILetter of IntentBuyerBuyer interestUsually non-bindingStates intended purchase terms and readiness to proceedTreated as proof of funds or a bank commitment
ICPOIrrevocable Corporate Purchase OrderBuyerFirm buyer proposalDepends on wording and governing lawConfirms detailed purchase terms and accepted procedureAssumed to be binding merely because it says irrevocable
FCOFull Corporate OfferSellerFirm seller offerMay become binding if accepted as draftedSets firm product, price, delivery, payment and validity termsIssued before seller authority, allocation or compliance is verified
SPASales and Purchase AgreementBoth partiesContract executionIntended to be bindingGoverns the sale, performance, remedies and disputesSigned while commercial schedules or payment terms remain incomplete

How the documents move a transaction forward

An SCO starts the conversation from the seller's side. An LOI answers from the buyer's side without usually committing either party. An ICPO is a more detailed buyer proposal, but its title does not decide whether it is legally binding. The FCO sets the seller's firm commercial position. The SPA then consolidates the agreed product, specification, quantity, Incoterm, shipment schedule, payment instrument and dispute terms.

What to verify before relying on any document

  • Confirm the signatory's authority and the legal identity of each party.
  • Check that commodity, grade, quantity, price and Incoterms 2020 place match across documents.
  • Do not treat an LOI or ICPO as proof of funds, or an SCO or FCO as proof of stock.
  • Keep bank coordinates out of unnecessary circulation and verify changes through a known channel.
  • Ensure the SPA and LC application use compatible documentary requirements and timelines.

Download the relevant draft from the free commodity trade template library, then adapt it to the transaction and obtain legal, banking and compliance review where required.

Source: ICC and UNIDROIT - Model contracts, documentary-credit practice and international contract principles
Last reviewed: September 2026

Frequently asked questions

What is the usual order of SCO, LOI, ICPO, FCO and SPA?#

A common sequence is seller SCO, buyer LOI or ICPO, seller FCO, then a negotiated and signed SPA. Real transactions often omit one or more preliminary documents, so the parties should follow the agreed procedure rather than assume every step is mandatory.

Is an ICPO legally binding?#

Calling a purchase order irrevocable does not automatically create an enforceable sale contract. Its effect depends on offer, acceptance, certainty of terms, governing law and the parties' conduct. The signed SPA normally contains the complete binding obligations.

What is the difference between an SCO and an FCO?#

An SCO is an indicative seller communication whose price, quantity and availability remain subject to confirmation. An FCO is a firmer seller offer with defined commercial terms and a validity period, although the SPA normally remains the final contract.

Can an LOI replace an SPA?#

Normally no. An LOI records purchasing intent and headline terms, while an SPA defines detailed rights and remedies covering specifications, delivery, payment, inspection, force majeure, default, governing law and dispute resolution.

Do banks require an LOI, ICPO or FCO to issue an LC?#

Banks primarily require an approved LC application, credit facilities, compliance checks and the underlying contract or invoice. Preliminary trade documents can support the commercial file but do not replace the bank's own onboarding and credit process.

Standards referenced: ICC Model Contracts · UNIDROIT Principles of International Commercial Contracts · UCP 600 (ICC Publication 600)

This guide is decision-support, not banking, tax, legal or customs advice. See our editorial standards.

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