Bank guarantees and performance bonds: understand the cash behind the promise

A contract bond or bank guarantee can help a business win work by giving the customer financial protection if agreed obligations are not met. The hidden issue is often collateral: the bank may tie up cash or other facilities behind the bond, reducing working capital available to deliver the contract.

Know whether the customer wants a bid, advance-payment, performance or retention bond

UK Export Finance lists several common contract-bond types, including bid, advance-payment, performance, retention and warranty bonds. They protect different stages of the contract. A bid bond supports the tender process, while a performance bond can support the buyer if the exporter does not perform as agreed.

Do not treat the word bond as a standard product. Check the amount, beneficiary, expiry, calling conditions and contract event it covers. A 10 percent performance bond on a £2 million contract represents £200,000 of contingent exposure even though no cash leaves the bank on day one.

Understand how much cash or borrowing capacity the bank may reserve

A bank issuing a guarantee takes risk that it may have to pay the beneficiary. It can therefore require cash collateral, security or use part of the company's existing credit facility. UKEF explains that banks often require collateral for export contract bonds and that this can tie up working capital needed to fulfil the order.

Suppose a £150,000 bond requires the exporter to lodge £150,000 of cash. The visible bond fee may be modest, but the company has effectively lost access to £150,000 while still needing to buy materials and pay staff. Include collateral usage in the working-capital forecast before signing the underlying contract.

Read the bond wording and calling conditions before the bank issues it

The commercial contract and the guarantee document are both important. Some guarantees can be called on demand subject to their wording, while others depend on specific evidence or events. The business should understand what the beneficiary must do to request payment and when the guarantee expires.

Use legal or specialist trade-finance advice for material obligations, especially cross-border contracts. A poorly understood guarantee can turn a dispute about project performance into an immediate banking problem if the beneficiary can call the bond while the underlying commercial argument is still unresolved.

Model the guarantee fee together with the cost of tied-up liquidity

Ask the bank for the issuance fee, annual or quarterly commission, amendment fees, security requirements and cancellation process. Then add the opportunity cost of collateral. A guarantee secured by cash can be economically expensive even when the bank commission itself looks low.

If £200,000 of cash is blocked for one year to support a bond, management should compare the return or operating value that cash could otherwise create. The relevant cost is not only the bank's fee. It is the bank fee plus the value of restricted liquidity and any additional borrowing needed because that cash is unavailable.

Check whether UK Export Finance can reduce collateral pressure on an export bond

UKEF's Bond Support Scheme can provide a partial guarantee to the bank supporting an eligible export contract bond. UKEF currently states that its guarantee can cover up to 80 percent of the bond's value, potentially allowing the bank to release cash collateral back to the exporter for working capital.

The scheme can support bid, advance-payment, performance, retention and warranty bonds and does not state a maximum value or minimum or maximum term for each bond. Eligibility still applies, and the exporter must be carrying on business in the UK with an overseas contract or intended contract. Discuss the transaction with the bank or a UKEF Export Finance Manager before assuming support is available.

Track every outstanding guarantee until it is formally released or expires

Maintain a register showing beneficiary, contract, amount, bank, collateral, issue date, expiry date, auto-extension provisions and release conditions. Treat the register as contingent financial exposure. A guarantee that is no longer commercially needed can still consume credit capacity if nobody obtains formal release.

Review the register before applying for new borrowing. A lender may consider outstanding guarantees when assessing total exposure. If several major projects require bonds at the same time, the company can hit a facility limit even though all projects are profitable. Plan bond capacity alongside ordinary loans and overdrafts.

Project teams should also notify finance before agreeing bond wording with a customer. A sales team may see a five percent performance bond as a routine contract clause while treasury sees it as £250,000 of contingent exposure on a £5 million deal. Bringing banking capacity into contract review early prevents the company from winning work it cannot efficiently support.