Bank Guarantees and Standby Letters of Credit: A Practical Guide

International contracts — for construction, supply, services, or property transactions — frequently require one party to provide a bank guarantee or standby letter of credit as security for its performance obligations. These instruments are routine in major international commerce but often misunderstood by businesses encountering them for the first time, or by HNW individuals involved in large property or investment transactions.

This guide explains the instruments, their types, their differences, and the practical process of obtaining and managing them.

What Bank Guarantees and SBLCs Have in Common

Bank guarantees (also called demand guarantees or performance guarantees) and standby letters of credit (SBLCs) share a core characteristic: they are undertakings by a bank to pay a specified amount to a beneficiary if the bank's client (the account party) fails to perform a specified obligation.

Unlike commercial letters of credit, which are primary payment instruments expected to be drawn upon in the normal course of a transaction, guarantees and SBLCs are secondary instruments — they are drawn only if something goes wrong. If the underlying contract is performed satisfactorily, the guarantee expires unused.

Both instruments share the autonomy principle: the bank's obligation to pay arises from compliance with the instrument's terms, not from an assessment of whether the underlying contract was actually breached. If the beneficiary presents a compliant demand, the bank must pay — it cannot look behind the demand to evaluate the merits of the beneficiary's claim.

The Difference Between Bank Guarantees and SBLCs

The distinction is primarily one of geography and governing law:

Bank guarantees are the standard instrument in Europe, the Middle East, Africa, and Asia (outside North America). They are typically governed by the ICC's Uniform Rules for Demand Guarantees (URDG 758) or by local law. URDG 758, published in 2010, is the international standard for demand guarantees.

Standby letters of credit (SBLCs) dominate in North America and jurisdictions with US banking influence. They are typically governed by either UCP 600 (the rules for commercial letters of credit, which can be adapted for standbys) or the International Standby Practices (ISP98), which is specifically written for standby credits.

Economically and functionally, a bank guarantee and an SBLC serve identical purposes. The choice between them is largely determined by the jurisdiction of the beneficiary and the governing law preferences of the transaction.

Types of Bank Guarantees

Bid Bond (Tender Guarantee)

A bid bond is provided when tendering for a contract — usually a construction, government, or major supply contract. It assures the contract award authority that if the bidder wins the tender, it will proceed to enter into the contract on the terms bid. If the winner fails to proceed (for example, discovers it underbid and withdraws), the beneficiary can draw on the bid bond to compensate for the cost of re-tendering.

Bid bonds are typically modest in value — often 1–5% of the contract value — and have a short validity period corresponding to the expected duration of the tender process.

Performance Bond (Performance Guarantee)

A performance bond provides assurance that the contractor or supplier will complete the contract in accordance with its terms. If the principal fails to perform, the beneficiary can draw on the bond to recover damages or fund completion by a third party.

Performance bonds are typically 5–10% of the contract value for construction and 10–20% for supply contracts, though terms vary widely by industry and jurisdiction.

Advance Payment Guarantee (Repayment Bond)

When a buyer makes an advance payment to a seller or contractor before delivery or performance, an advance payment guarantee protects the buyer if the seller fails to deliver. The bank undertakes to return the advance if the seller defaults.

These are particularly common in construction — where large advance payments may be made to allow the contractor to mobilise — and in major equipment supply contracts.

Retention Money Guarantee

In construction contracts, buyers typically retain a percentage of each payment certificate (the "retention") as security for defects discovered after completion. A retention money guarantee allows the contractor to receive the retained sum immediately, in exchange for a bank guarantee that will be drawn if defects are not rectified.

Financial Guarantee

Used in a wide range of financial contexts — for example, guaranteeing loan repayment, rent obligations, or settlement of financial market transactions. Financial guarantees can be contentious with some regulatory authorities as they can blur the line between banking and insurance.

Customs Guarantee (Customs Bond)

Required by customs authorities in many countries to secure payment of import duties. If the importer fails to pay duties (for example, on goods brought in under temporary importation provisions), the customs authority can call the guarantee.

Demand Guarantees vs Conditional (Suretyship) Guarantees

The most important practical distinction within the guarantee world is between demand guarantees (payable on first written demand) and conditional or suretyship guarantees (payable only when the principal's default has been established).

Demand guarantee (URDG 758): The beneficiary can draw by presenting a written demand stating that the principal has failed to perform its obligations. The bank pays without investigating whether the underlying default actually occurred. This is extremely powerful from the beneficiary's perspective and is the market standard for international commercial transactions.

Conditional guarantee: Payment requires proof of the principal's default — typically a court judgment, arbitration award, or agreement between the parties. These provide less certainty to the beneficiary and are less common in international commerce.

Most internationally traded guarantees are demand guarantees. When a contract requires you to provide a "bank guarantee," assume it means a demand guarantee unless specified otherwise.

The Risks of Demand Guarantees

The autonomy and demand-pay nature of demand guarantees creates a significant risk: unfair or fraudulent calling. A beneficiary who wants to exert commercial pressure, is making excessive claims under a contract, or is simply dishonest can call a demand guarantee even if there has been no actual breach of contract. The bank will pay — it cannot assess the merits of the claim.

The principal's remedies if a guarantee is unfairly called:

1. Emergency injunction: Apply to a court for an emergency order restraining the bank from paying or the beneficiary from receiving payment. Courts in most jurisdictions will grant injunctions to restrain payment only in cases of clear fraud — not merely disputed performance.
2. Claims against the beneficiary: Once payment is made, the principal can sue the beneficiary for recovery of the guarantee proceeds if the call was unjustified.

Neither remedy is quick or cheap. Prevention is better than cure: structure contracts to include clear trigger events for guarantee calls, dispute resolution mechanisms before calls, and cure periods. The URDG 758 rules include some protections, including a requirement that the demand state in what respect the principal is in breach — which at least requires the beneficiary to articulate a basis for its demand.

Obtaining a Bank Guarantee

The process for a business to obtain a bank guarantee from its bank:

1. Establish a guarantee facility: Most banks require a pre-approved guarantee facility (analogous to a credit facility) before they will issue guarantees. The bank assesses the creditworthiness of the principal, the nature of the guarantee obligations, and the likely risk of call.

2. Collateral requirements: Banks typically require cash collateral (placing funds on deposit equal to the guarantee amount), a charge over other assets, or take the guarantee against the principal's existing credit facility. For businesses without established credit, full cash collateral is common.

3. Issue the guarantee: Once the facility is in place, the bank issues the guarantee to the beneficiary (or to a bank in the beneficiary's country, which may then issue a counter-guarantee to the beneficiary's local bank — a common structure in international contracts where the beneficiary wants a guarantee from a bank in their own jurisdiction).

4. Counter-guarantees in international transactions: When the beneficiary is overseas, the standard structure involves the principal's bank (the instructing bank) issuing a counter-guarantee to a correspondent bank in the beneficiary's country (the issuing bank). The issuing bank in turn issues the primary guarantee to the beneficiary. If called, the issuing bank pays the beneficiary and looks to the counter-guarantee from the instructing bank for reimbursement.

Cost of Bank Guarantees

Bank guarantee fees depend on the creditworthiness of the principal, the type of guarantee, the validity period, and the bank's risk assessment. Typical ranges:

• Issuance fee: 0.5–3% per annum on the guarantee amount, charged for the validity period. A £500,000 performance bond with a 2-year validity at 1% per annum would cost £10,000 in bank fees.
• Amendment fees: £100–£500 per amendment for changes to the guarantee text or extension of the validity period.
• SWIFT transmission fees: £50–£200 for transmitting the guarantee/counter-guarantee via SWIFT.

For businesses requiring regular guarantees across multiple contracts, negotiating a dedicated guarantee line with competitive pricing as part of the overall banking relationship is advisable.

SBLCs for Property Transactions

In international property transactions, SBLCs are sometimes used as security instruments — for example:

• Tenant deposit replacement: Instead of a cash deposit, a commercial tenant provides an SBLC in favour of the landlord, enabling the tenant to preserve liquidity while the landlord has guarantee protection.
• Completion security: In off-plan property purchases, the developer may require an SBLC from the buyer (or vice versa) as assurance that funds will be available at completion.
• Earnest money alternative: In some US and Middle Eastern markets, SBLCs serve as alternatives to escrow for earnest money deposits.

How Global Investments Can Help

Global Investments advises clients on the appropriate use of bank guarantees and SBLCs in international transactions — including introductions to banking relationships capable of issuing guarantees in relevant jurisdictions, structuring guarantee language to protect clients' interests, and advising on the negotiation of guarantee terms within underlying contracts.

Our experience spans construction, property, trade, and investment transactions across the UK, UAE, Cyprus, and other markets our clients operate in.

Contact us for guidance on your specific guarantee requirements.

Information is provided for educational purposes as of 2026. Bank guarantee and SBLC structures, fees, and legal requirements vary by jurisdiction and transaction. Seek specialist banking and legal advice for specific transactions. Demand guarantees can be called regardless of the merits of the underlying claim — understanding this risk is essential before providing one.