Gold Swap

A gold swap pairs a spot transfer of gold from one party to another, paid for in currency (most often US dollars), with a binding agreement to undo that transfer on a fixed later date at a price settled at the outset. The holder of gold receives cash it can use for the term of the swap, and the provider of cash holds the gold as security. Economically, a gold swap is a short-term loan collateralized by gold, structured in the same way as a repurchase agreement or an FX swap.

Gold swaps are used mainly by central banks, the Bank for International Settlements and bullion banks. They allow a holder of gold to raise liquidity without selling the metal outright, and to keep the gold on its balance sheet because it has committed to buy it back.

A gold swap has two legs. On the near date, the gold holder transfers a quantity of gold, typically in the form of London Good Delivery bars, and receives currency at an agreed price. On the far date, the transaction runs in reverse: the gold holder repays the currency plus an agreed amount and takes back the same quantity of gold. The difference between the near and far prices reflects the cost of borrowing dollars against gold, which is linked to the gold forward rate and to dollar interest rates.

The cash provider usually lends less than the market value of the gold. That margin, or haircut, protects the lender if the gold price falls before the swap matures. If prices move sharply, the documentation may require one side to post additional collateral, similar to a margin call.

A central bank holds gold worth US$1.05 billion and needs dollars for three months. It enters a gold swap with a bank, delivering the gold and receiving US$1 billion, an implied haircut of about 5 percent. The parties agree that in three months the central bank will pay back US$1.0125 billion and receive its gold. The extra US$12.5 million is the financing cost, equivalent to roughly 5 percent a year. If the central bank cannot pay on the far date, the bank keeps the gold and can sell it to cover the debt.

A gold swap differs from gold leasing. In a gold lease, the owner lends the metal itself and receives a lease fee; a bullion bank might borrow the gold to sell it or to lend it to a jeweler. In a gold swap, the gold is collateral for a currency loan, and the gold holder is the borrower of cash, not the lender of metal. The two markets are linked: the gold lease rate is broadly the dollar interest rate minus the gold forward rate.

A gold swap also differs from an outright sale with a forward contract, in that it is documented and accounted for as a single financing transaction. Many central banks continue to report swapped gold among their monetary gold reserves and record the cash as a liability, while some disclose swapped gold separately.

Central banks with large gold holdings and limited hard currency reserves have used gold swaps to bolster liquidity during crises. Because the swapped gold must be delivered to the counterparty, it often moves from domestic vaults to a recognized custodian in London or another bullion center. Gold held as allocated gold at such a custodian can be swapped more easily than gold stored at home.

The BIS has long acted as a counterparty in gold swaps with central banks and commercial banks, as part of the banking services it provides to its members. For countries with weak reserve adequacy, a gold swap is an alternative to a central bank swap line, which is available only to a limited group of central banks.

For the gold holder, the main risk is losing the gold if it cannot repay. Venezuela's central bank used gold swaps with international banks in the mid-2010s, and part of the collateral was retained by counterparties when swaps could not be unwound, illustrating how a temporary financing step can become a permanent loss of reserves. Gold that has been pledged is also no longer freely available if sanctions or legal claims arise abroad.

For the cash provider, the risks are a fall in the gold price beyond the haircut, the counterparty's default, and the operational and legal risk of taking title to physical gold. Pricing therefore depends on the counterparty's credit standing, the term of the swap and the location and form of the gold.