What Is a Tank Storage Receipt?

A tank storage receipt — usually shortened to TSR — is issued by a terminal operator to confirm that a specific quantity of product is held in storage on behalf of a named party. It states the product grade, the quantity (typically in metric tons or cubic meters at a reference temperature), the tank or tank cluster it sits in, the date the position was recorded, and the name of the party the terminal recognizes as the owner of that stock.

Unlike a bill of lading, a TSR is not a document of title in the same legal sense in every jurisdiction — its enforceability depends on the terminal's terms and conditions and the governing law of the storage agreement. What it does reliably do is give a counterparty, a bank, or an auditor a terminal-verified snapshot of "this much product, of this quality, sits in this tank, credited to this account" at a given moment.

These three documents get confused constantly because they all travel alongside the same cargo, but they answer different questions. A bill of lading is issued by a carrier and evidences a shipment loaded onto a vessel — it is tied to a voyage. A certificate of quality or quantity is issued by an independent inspector and answers "what exactly was this product, and how much of it was there" at a specific measurement point, whether that is a vessel manifold, a tank gauge, or a flow meter.

A tank storage receipt is different again: it is not tied to a voyage or a single measurement event. It reflects a static position — stock sitting in a tank at the terminal, independent of when it arrived or when it will leave. A trader can hold a TSR for weeks or months while the product itself never moves, simply changing which account within the terminal system the stock is credited to as ownership changes hands.

The terminal operator issues the TSR, not the trader and not the inspector. It is generated once product has been received into a tank and the terminal's own gauging and metering confirm the quantity. At a multi-product terminal this means the TSR is tied to a specific tank or tank group dedicated to that grade — a TSR for EN 590 diesel and a TSR for Jet A1 will never reference the same tank, because product segregation is what makes the receipt meaningful in the first place.

Terminals typically reissue or update a TSR whenever a material change occurs to the position: a partial withdrawal, a blend that changes the recorded quality, or a transfer of ownership between two accounts within the same terminal (an "in-tank transfer"). Each reissue carries a new date and, where relevant, a revised quantity.

In practice, a TSR is most often used for two things. First, as evidence of stock ownership when a cargo is sold "in tank" — meaning the buyer is not taking delivery by vessel but simply becoming the new party the terminal recognizes as owner, via an in-tank transfer. The TSR (or its update) is the terminal's confirmation that the transfer has been recorded.

Second, a TSR is frequently used as supporting collateral documentation in trade finance. A bank financing a trader's working capital against physical stock will want a current TSR — sometimes alongside a pledge or lien letter from the terminal — as evidence the collateral genuinely exists and is under the terminal's control. Because of this financing role, terminals are typically conservative about who they will issue and re-address a TSR to, and require clear instructions before recognizing a change of ownership.

A TSR is only as reliable as the terminal issuing it. Before relying on one commercially or as loan collateral, it is worth confirming a few basics directly with the terminal: that the tank referenced actually exists and holds the stated product, that the terminal will confirm the receipt's authenticity and current status on request (a simple but essential check — TSR fraud is a known risk in physical trading), and that the terminal's standard terms make clear what happens to the stock in the event of non-payment of storage fees or a dispute between counterparties.

For traders working across regions, TSR practice is not identical from terminal to terminal — formatting, the level of detail on quality parameters, and how quickly a terminal will confirm or reissue a receipt all vary by operator and by jurisdiction. At Unlimited Logistics B.V., stock held at our Rotterdam terminal is documented against tank-specific positions with quantities gauged in line with the product's custody transfer standard, and our team can confirm a current TSR position directly to a counterparty or financing bank on request.

If you are structuring a deal that depends on tank storage receipts — whether for an in-tank sale, a financing arrangement, or simply confirming a position before you commit to a trade — our commercial team can walk through exactly how documentation works at each of our terminals. See our