Tank to Tank Spot FOB Dip and Pay Procedure for Rotterdam Houston Jurong and Fujairah
- Jose Pagan
- Jul 20
- 10 min read
A tank-to-tank FOB spot deal moves fast only when the paperwork, product verification, storage access, and payment sequence are clear before either side acts. In ports such as Rotterdam, Houston, Jurong, and Fujairah, small gaps in procedure can delay a cargo, block a dip test, or raise compliance concerns.
The dip and pay model is built around a simple idea: the buyer verifies the product in the seller’s nominated tank before paying, then the product is injected into the buyer’s tank after a successful inspection. In practice, the process depends on strict document control, valid tank storage, independent inspection, and clean transfer of title.
This guide lays out a practical tank-to-tank spot FOB dip and pay procedure, based on the steps in the transaction brief, with notes on what each document does and where buyers, sellers, logistics teams, and intermediaries need to be careful.
What a tank-to-tank FOB dip and pay transaction means
A tank-to-tank transaction means the product is already held in a seller’s storage tank at an agreed port or terminal. The buyer does not wait for a vessel to arrive. Instead, the buyer focuses on confirming the product exists, checking quantity and quality, securing storage, and receiving the product by injection into the buyer’s tank.
FOB, or Free on Board, is commonly used in commodity trading to define the point at which responsibilities and costs shift. In a tank-to-tank storage context, the parties should state very clearly how risk, costs, terminal handling, injection charges, and title transfer work, because a tank injection is not the same physical scenario as loading product onto a ship.
Dip and pay means the buyer pays after an approved dip test. The dip test normally involves independent inspection, such as SGS or another accepted inspection company, to confirm the product’s presence, quantity, and specifications in the nominated tank.
This process is common in discussions around refined petroleum products, including diesel, jet fuel, gasoline components, and related fuel products. The ports named in the brief, Rotterdam, Houston, Jurong, and Fujairah, are major storage and trade hubs. Each has its own terminal rules, appointment systems, safety procedures, and documentation norms.
This article is for general information only. Petroleum trading involves legal, financial, sanctions, customs, and operational risk. Parties should use qualified legal, banking, inspection, and logistics support before signing or funding any transaction.
The core transaction flow
The procedure follows eight main stages:
Buyer issues the ICPO with required attachments.
Seller issues the commercial invoice for product in tank.
Seller provides proof of product documents.
Seller issues NCNDA and IMFPA for intermediaries and buyer signing.
Buyer conducts an independent dip test at buyer’s expense and sends TSR.
Product is injected into buyer’s tank after a successful dip test.
Buyer pays by MT103 and seller transfers title ownership.
Seller pays commissions and both parties finalize future supply terms.
That sequence looks direct, but each step carries a specific purpose. No party should treat it as paperwork for its own sake. Every document either proves authority, confirms product, enables inspection, controls payment, or supports commission distribution.
Step 1. Buyer issues the ICPO with banking details, passport copy, and TSA
The process starts when the buyer issues an Irrevocable Corporate Purchase Order, usually called an ICPO. This document confirms the buyer’s intent to purchase the stated product under the seller’s working procedure.
A solid ICPO should identify the buyer, product, quantity, port, delivery method, payment method, and the procedure the buyer accepts. It may also include banking details, though both parties should handle banking information through secure channels and verify it independently.
The brief also calls for a scanned copy of the buyer’s passport and a Tank Storage Agreement, or TSA.
The TSA is especially important. It shows that the buyer has storage capacity or an arrangement with a tank farm operator to receive the product. In a tank-to-tank deal, the buyer’s storage is not optional. If the buyer cannot receive injection, the transaction can stall after inspection.
Key checks at this stage include:
The ICPO matches the seller’s stated procedure.
Buyer identity and company details are consistent across all documents.
The TSA is current and linked to the relevant port or terminal.
Banking details are verified using a trusted method.
Personal identification documents are protected and shared only when needed.
Because passport copies and bank details are sensitive, both sides should avoid open, unsecured document chains. Document misuse is a real risk in international commodity trade.
Step 2. Seller issues the commercial invoice for product in tank
After reviewing the buyer’s ICPO and supporting materials, the seller issues a Commercial Invoice for the product in the seller’s tank at the agreed port.
The commercial invoice should match the transaction terms. It normally states the product, quantity, unit price, total value, tank location or port, payment terms, validity period, and seller banking information. Since this is a spot transaction, the invoice validity period matters. Product availability, tank rental, and terminal scheduling can change quickly.
The buyer and buyer’s logistics team sign and return the commercial invoice to the seller. This signed document confirms acceptance of the price and operating procedure.
At this stage, the buyer’s logistics team should compare the commercial invoice with the TSA and terminal capability. A mismatch between product volume and storage capacity can cause delays later. For example, a buyer should not approve an invoice for a quantity that cannot fit into the receiving tank, unless the delivery will be split under written terminal approval.
Step 3. Seller provides proof of product documents
Once the commercial invoice is signed, the seller issues the proof of product package, often called PPOP. The brief lists the following documents:
Document | Purpose |
GPS coordinates and Tank Storage Receipt | Identifies the storage location and supports the claim that product is held in tank |
Injection report | Shows how product entered the seller’s tank or confirms prior tank movement |
Unconditional Dip Test Authorization letter | Gives the buyer permission to inspect the product without added conditions |
Authorization to Sell and Collect | Confirms the seller’s authority to sell the product and collect payment |
Authorization to Verify | Allows the buyer or appointed parties to verify documents and storage claims |
Fresh SGS report in seller’s tank | Provides recent third-party inspection information on the product |
These documents do different jobs. The Tank Storage Receipt, or TSR, helps prove that the seller has valid tank storage. The GPS coordinates help identify the tank location, but coordinates alone are not enough. The buyer should be able to verify them through the terminal or tank farm under the authority granted in the seller’s documents.
The Unconditional Dip Test Authorization, or DTA, is central to the dip and pay structure. It should allow the buyer’s appointed inspection company to perform the test without being blocked by last-minute conditions, unexplained fees, or unclear access rules.
The ATSC and ATV support seller authority and document verification. They help reduce the risk that the seller is acting without title, without mandate, or without control over the product.
A fresh SGS report can be useful, but it should not replace the buyer’s independent inspection unless both parties expressly agree. A prior report may show product status at a point in time. The buyer’s dip test confirms current product condition and quantity before payment.
Step 4. Seller issues NCNDA and IMFPA for signing
If intermediaries are involved, the seller issues the NCNDA and IMFPA.
The Non-Circumvention, Non-Disclosure Agreement protects parties from being bypassed after they introduce buyers, sellers, mandates, or logistics contacts. The Irrevocable Master Fee Protection Agreement sets out how commissions will be paid after the transaction closes.
These documents should name the parties clearly and state commission amounts, payment timing, bank details, and conditions for payment. Poorly drafted fee agreements can create disputes after the buyer pays and the seller receives funds.
Intermediaries should not depend on verbal promises. They should review the signed IMFPA before spending time or money on the deal. At the same time, commission structures should not interfere with product verification, buyer payment, or title transfer.
A practical rule is simple: the product transaction must remain clean, and commission payment must be documented separately but consistently.
Step 5. Buyer inspects by SGS at buyer’s expense and sends TSR
The buyer then arranges inspection, commonly by SGS or another agreed independent inspector, at the buyer’s expense. The inspection is performed in the seller’s tank under the DTA and terminal rules.
The dip test should confirm:
Product presence
Approximate quantity
Product quality against the agreed specification
Tank identity
Seal status, where relevant
Sampling and testing records
Temperature or density readings, if needed for volume calculation
The buyer also sends a TSR. In this context, the buyer’s TSR supports the next stage, which is product injection into the buyer’s tank. It shows that the buyer has receiving storage ready.
The buyer should coordinate inspection timing with the terminal, seller, tank farm, and logistics team. Even with perfect paperwork, terminal access requires scheduling and safety compliance. Inspectors may need entry permits, tank access clearance, and sampling approvals.
Step 6. Product is injected after a successful dip test and buyer pays by MT103
After a successful dip test, the product is injected into the buyer’s tank. The procedure states that injection happens immediately after the successful inspection.
This stage needs tight coordination. The seller’s tank, buyer’s tank, connecting pipeline, terminal operator, and inspection records all need to align. Injection may involve internal transfer instructions, terminal approvals, metering, and post-transfer confirmation.
Once the product is ready for transfer under the agreed procedure, the buyer makes payment by MT103. An MT103 is a SWIFT payment message used for international wire transfers. The seller then transfers title ownership to the buyer.
The title transfer document should make the ownership change clear. It should identify the buyer, seller, product, quantity, storage location, date, and reference invoice. The goal is to remove doubt about who owns the product after payment.
This is one of the most sensitive points in the transaction. The buyer wants proof before payment. The seller wants payment before losing control of product. The agreed dip and pay structure bridges that gap through inspection, injection, payment, and title transfer documents.
A successful dip test should trigger a controlled sequence, not a new negotiation.
If either party adds new conditions after inspection, the deal can fail. That is why the commercial invoice, DTA, payment terms, and title transfer wording must be settled before the inspector enters the terminal.
Step 7. Seller distributes commissions within 72 hours
After receiving the buyer’s payment, the seller distributes commissions to the involved intermediaries within 72 hours, according to the signed NCNDA and IMFPA.
This part should not need fresh debate after closing. The IMFPA should already state who is paid, how much is paid, which bank account receives funds, and when payment becomes due.
Commission distribution often becomes difficult when intermediary chains are unclear. To avoid confusion, the parties should confirm:
Each intermediary’s role
Paymaster details, if used
Fee amounts or percentages
Payment currency
Bank compliance requirements
Timing after seller receipt of funds
Banks may request supporting documents for commission payments, especially in cross-border petroleum transactions. Intermediaries should keep their documents consistent and avoid inflated or unexplained payment claims.
Step 8. Buyer and seller finalize future fuel deliveries
After the spot transaction closes, the buyer and seller may finalize a contract for later deliveries. This is common when the first tank-to-tank deal serves as a trial transaction.
The follow-on contract should not simply copy the spot invoice. Ongoing supply needs more detail. The parties should address delivery schedule, monthly quantity, product specification, price formula, tank logistics, nomination process, inspection cycle, payment timing, default terms, sanctions compliance, and governing law.
A successful spot transaction can build trust, but it should not replace contract discipline. Repeated product movement across Rotterdam, Houston, Jurong, or Fujairah requires clear operating rules.
Port considerations for Rotterdam, Houston, Jurong, and Fujairah
The same core procedure can apply across the four named hubs, but the operating context differs.
Rotterdam is a major European energy and storage hub. Documentation, customs status, terminal access, and product specification should be checked carefully, especially for products moving into or within the European market.
Houston sits at the center of a large refining, pipeline, and export network. Parties should pay close attention to terminal capacity, domestic compliance, product grades, and whether the transfer involves inland logistics, refinery-linked storage, or export-oriented movement.
Jurong is a key Singapore energy and petrochemical area. Terminal rules, documentation standards, and appointment discipline are critical. Buyers should also confirm product specification against destination requirements if the product will move beyond Singapore.
Fujairah is a major oil storage and bunkering center. Product storage, blending, and vessel-related movements are common in the wider market. Tank identity, current inspection reports, and terminal verification should receive close attention.
Across all locations, the safest approach is the same: verify the tank, verify the authority, verify the product, verify the receiving storage, then pay under the agreed written terms.
Practical red flags in a dip and pay procedure
A dip and pay transaction is designed to reduce risk, but it does not remove risk. Watch for warning signs at each stage.
Common red flags include:
Seller refuses independent verification of the tank.
DTA contains conditions that block real inspection.
TSR cannot be verified through a tank farm or terminal.
Product documents carry inconsistent names, dates, quantities, or ports.
Commercial invoice terms differ from the ICPO.
Buyer is asked to pay large fees before product verification.
Seller cannot show authority to sell and collect.
Intermediary fee claims are unclear or excessive.
Payment instructions change at the last moment.
Title transfer language is vague.
A legitimate transaction should withstand basic checks. If a party pressures the other side to skip verification, that pressure is itself a risk signal.
A clean document checklist before payment
Before the buyer releases funds, the transaction file should be complete and consistent. At a minimum, the parties should be able to match the following:
Transaction item | What to confirm |
ICPO | Buyer intent, accepted procedure, product, quantity, port, payment method |
TSA | Buyer has valid storage ready to receive injection |
Commercial invoice | Price, quantity, seller details, bank details, validity, product in tank |
TSR | Seller’s storage claim and buyer’s receiving storage support |
DTA | Inspector has clear authority to conduct dip test |
SGS report | Quality and quantity evidence from independent inspection |
ATSC and ATV | Seller authority and document verification rights |
NCNDA and IMFPA | Commission roles, amounts, timing, and bank details |
MT103 record | Buyer payment evidence |
Title transfer | Ownership passes from seller to buyer after payment |
The strongest files are easy to follow. A third party should be able to read the documents and understand who owns the product, where it is stored, who can inspect it, who pays, and when title changes.
The main takeaway
A tank-to-tank spot FOB dip and pay procedure works best when each step answers a specific question. Is the buyer real and ready? Is the seller authorized? Is the product in tank? Can the buyer inspect it? Is buyer storage ready? Will payment and title transfer happen in the agreed order?
For Rotterdam, Houston, Jurong, and Fujairah, the answer depends on clean documents, terminal verification, independent inspection, secure banking, and clear title transfer. When the parties treat the procedure as a control system rather than a formality, a spot fuel transaction becomes easier to verify, easier to execute, and easier to repeat.
Request a Tank-to-Tank FOB Fuel Quote
Nationwide Brokerage Group Inc. connects qualified buyers with verified refinery suppliers for Tank-to-Tank Spot FOB Dip & Pay transactions at Rotterdam, Houston, Jurong, and Fujairah. Contact us today to discuss product availability, transaction procedures, and global fuel supply opportunities.
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