What is a Bank Guarantee?
A bank guarantee is a written undertaking by a bank to pay a beneficiary a sum if the bank's customer — the applicant — fails to meet a contractual obligation. It is a two-party bank instrument that ties up the applicant's credit line and is often payable on demand.
Key facts at a glance
- Two parties: the bank (which issues and pays the guarantee) and the beneficiary (who is protected), with the applicant as the bank's customer standing behind it.
- Payment: often payable on demand (first-demand), meaning the bank pays on the beneficiary's written call, though conditional guarantees also exist.
- It ties up the applicant's credit line: the guaranteed amount reduces the borrowing capacity available for loans and working capital.
- On-balance-sheet: because it consumes bank credit, a bank guarantee typically appears as a contingent liability and affects financial ratios.
- Cost: a commission plus a margin on the guaranteed amount, on top of the credit line it locks up — often costlier in real terms than a letter of guarantee (carta fiança) issued by a guarantor such as ERGO.
Bank guarantee vs surety bond
The two instruments serve similar purposes but differ in structure, cost, and credit-line impact. For a fuller, side-by-side breakdown, see our guide on surety bond vs bank guarantee.
| Aspect | Bank guarantee | Surety bond (ERGO letter of guarantee) |
|---|---|---|
| Parties | Two parties: the bank and the beneficiary (the applicant is the bank's customer). | Three parties: the guarantor (ERGO), the principal, and the obligee. |
| Collateral / credit line | Draws on and ties up the applicant's bank credit line or cash collateral. | Issued after a credit analysis of the principal; leaves bank lines free. |
| Payment | Often payable on demand, with little or no inquiry. | Called under the terms of the letter of guarantee and the guaranteed contract. |
| Balance sheet | On-balance-sheet — a contingent liability that consumes credit capacity. | Does not use bank credit lines — it does not reduce available borrowing capacity. |
| Cost | Commission and margin, plus the opportunity cost of the frozen credit line. | Quote-based, with no line frozen. |
Main types of bank guarantee
- Performance guarantee — guarantees the applicant performs the contracted work or supply.
- Advance-payment guarantee — secures an advance the beneficiary paid to the applicant.
- Bid (tender) guarantee — guarantees the applicant honours its bid and signs the contract if awarded.
- Payment guarantee — guarantees payment for goods or services delivered.
- Financial (loan) guarantee — guarantees repayment of a financial obligation.
Definition & how it works
A bank guarantee is a written promise from a bank that it will pay a defined sum to a beneficiary if the bank's customer — the applicant — fails to fulfil a contractual obligation. The obligation is usually commercial: completing a project, delivering goods, repaying an advance, or honouring a tender.
Mechanically, the applicant asks its bank to issue the guarantee in favour of the beneficiary. The bank assesses the applicant's creditworthiness and, once approved, issues the guarantee against the applicant's credit line — or against cash or other collateral the applicant pledges. The guaranteed amount is then reserved and is no longer available for loans or working capital.
If the applicant defaults, the beneficiary makes a written demand on the bank. Where the guarantee is payable on demand (a first-demand guarantee), the bank pays with little or no inquiry into the underlying dispute, and then recovers the amount from the applicant. This makes a bank guarantee fast for the beneficiary but exposes the applicant to an unfair or premature call.
Types of bank guarantee
A performance guarantee is the most common in construction and supply: it secures the beneficiary if the applicant fails to complete the contracted work to standard. An advance-payment guarantee protects an advance the beneficiary has already paid, so the beneficiary can recover the money if the applicant does not deliver.
A bid (tender) guarantee is required at the tender stage: it guarantees that a bidder will honour its offer and sign the contract if awarded, discouraging frivolous bids. Payment and financial guarantees, in turn, secure a payment obligation or the repayment of a loan.
These categories mirror the main surety-bond types almost one-for-one — performance, advance-payment, and bid — which is why the two instruments are so often compared. The practical difference is not what they secure but how: a bank freezes credit, while a guarantor such as ERGO takes on the risk after a credit analysis.
Bank guarantee vs surety bond
A bank guarantee and a surety bond can secure the same obligation, but they are structured differently. A bank guarantee is a two-party bank instrument that draws on the applicant’s credit line and usually pays the beneficiary on demand. A surety bond — such as ERGO’s letter of guarantee (carta fiança) — is a three-party guarantee issued by a guarantor, explained in our guide on what a surety bond is; if it is called, the guarantor pays and the principal reimburses it afterwards.
The consequences are cost, capacity, and credit-line treatment. A bank guarantee ties up borrowing capacity and shows as a contingent liability, so it competes directly with the applicant's working-capital lines. ERGO's letter of guarantee is issued after a credit analysis rather than cash-collateralized, so it preserves liquidity and leaves bank lines free.
For performance, advance-payment, and bid obligations, ERGO’s letter of guarantee is a capital-efficient alternative, where the beneficiary accepts it. If you want to compare the structures point by point, read surety bond vs bank guarantee.
Cost & credit-line impact
The visible cost of a bank guarantee is a commission — an annual percentage of the guaranteed amount — plus arrangement and margin fees. But the real cost is larger: the guarantee reserves part of the applicant's credit line, so the money that could have funded loans, payroll, or inventory is locked up for the life of the guarantee.
ERGO’s letter of guarantee avoids that hidden cost. Because the guarantor analyses the principal instead of requiring pledged cash, it is priced by quote, after a risk analysis, and leaves the credit line untouched — see how much a surety bond costs for the full breakdown. For a business that needs its liquidity, the difference in effective cost can be substantial.
When you compare quotes, look past the headline commission and count the frozen credit line as a cost. A bank guarantee that appears cheap on paper can be the more expensive option once the tied-up capacity is priced in.
How to obtain one
To obtain a bank guarantee, you approach your bank with the underlying contract, tender, or obligation and its value, which sets the guarantee amount. The bank reviews your credit standing, may require collateral, and — if approved — issues the guarantee to the beneficiary against your credit line.
If preserving that credit line matters, ERGO's letter of guarantee is a capital-efficient alternative. ERGO, a guarantor, issues letters of guarantee (carta fiança) that secure the same performance, advance-payment, and bid obligations without freezing your bank lines — ERGO analyses your company rather than reserving your cash. Acceptance depends on the beneficiary: the contracting party, the tender notice, or the judge.
The process is fast: you identify the obligation, request a tailored quote, and, once approved, the letter of guarantee is issued digitally, with an ICP-Brasil certificate, in favour of the obligee. You can request a quote online or speak with a specialist to compare a letter of guarantee against a bank guarantee for your specific requirement.
Frequently asked questions
What is a bank guarantee in simple terms?+
A bank guarantee is a bank's written promise to pay a beneficiary a set amount if the bank's customer (the applicant) fails to meet a contractual obligation. The bank issues it against the applicant's credit line, pays the beneficiary if there is a valid call, and then recovers the money from the applicant.
How does a bank guarantee differ from a surety bond?+
A bank guarantee is a two-party bank instrument that ties up the applicant's credit line and is often payable on demand. A surety bond — such as ERGO's letter of guarantee (carta fiança) — is a three-party guarantee issued by a guarantor, not a bank: if it is called, the guarantor pays and the principal reimburses it afterwards, and the bank credit line stays free.
Is a bank guarantee payable on demand?+
Often, yes. A first-demand bank guarantee is paid on the beneficiary's written call, with little or no inquiry into the underlying dispute. Conditional guarantees, which require proof of default before payment, also exist but are less common in international trade and construction.
Does a bank guarantee tie up my credit line?+
Yes. A bank guarantee reserves part of your bank credit line (or requires cash collateral) for the amount guaranteed, so that capacity is no longer available for loans or working capital while the guarantee is in force. This is a key reason many companies prefer a letter of guarantee from a guarantor, which does not consume the credit line.
What are the main types of bank guarantee?+
The main types are the performance guarantee, the advance-payment guarantee, the bid (tender) guarantee, the payment guarantee, and the financial (loan) guarantee. These map closely to the equivalent surety-bond types — performance, advance-payment, and bid.
How much does a bank guarantee cost?+
A bank guarantee costs an annual commission on the guaranteed amount plus arrangement and margin fees — but the larger cost is the credit line it freezes. ERGO’s letter of guarantee is priced by quote, based on the risk analysis, the guaranteed amount, the term, the bond type, and the company’s profile, and it leaves your credit line free. Get your quote online through the app or on WhatsApp +55 11 93444-0099.
Need a guarantee without freezing your credit line?
ERGO is a guarantor that issues letters of guarantee (carta fiança) — a capital-efficient alternative to a bank guarantee — securing your company's obligations while keeping your bank lines free. Get a tailored quote or talk to a specialist.