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Key takeaways
- A performance bank guarantee is a written undertaking by a bank to pay the buyer a stated sum if the supplier fails to perform its contract.
- The contract sets the amount, usually as a percentage of the contract value, and the validity, which should cover the contract period, any defects period and a claim window.
- It may be on demand or conditional. On-demand guarantees pay on a written claim, and conditional ones need proof of default.
- Verify every guarantee with the issuing bank before you rely on it.
Free PDF and Excel: Bank guarantee review checklist and register. Get it below
What a performance bank guarantee is
A performance bank guarantee is a written commitment from a bank, issued at the supplier's request, to pay the buyer up to a stated amount if the supplier fails to perform its obligations under a contract.
It moves part of the risk from the buyer to the supplier's bank. If the supplier walks away halfway through a project, the buyer can claim on the guarantee instead of chasing the supplier through the courts. It is common in infrastructure, supply of capital equipment and government procurement in India and elsewhere.
A utility awards a 5 crore contract for transformers and asks for a performance guarantee for 10 percent, INR 50 lakh, valid until 3 months after the end of the 12-month warranty. The supplier's bank issues it.
The supplier delivers late and defective units and refuses to repair them. The utility sends a written claim to the bank within the validity period and recovers the sum, subject to the guarantee terms.
Terms to agree
| Field | What goes in it | Why it matters |
|---|---|---|
| Beneficiary and applicant | The buyer and the supplier, named exactly. | Mismatch with the contract is a common defect. |
| Amount | A fixed sum or a percentage of the contract value. | Set in the contract. |
| Validity and claim period | The date it expires and how long after expiry a claim may be lodged. | Must cover contract, warranty and a claim window. |
| Type | On demand or conditional. | Decides how easy a claim is. |
| Claim procedure | Written demand, to which address, with what statement. | A claim in the wrong form can be rejected. |
| Governing rules | For example the ICC Uniform Rules for Demand Guarantees, or local law. | Sets how disputes are read. |
| Reduction and release | When the amount falls or the guarantee is returned. | Avoids a standoff at the end. |
Free PDF and Excel
Bank guarantee review checklist and register
A checklist for reviewing a performance bank guarantee and a register that warns you before a guarantee expires.
- Wording checklist
- Verification steps
- Release conditions list
- Excel register with days to expiry
Checks before you accept one
- Compare the wording to the form attached to the contract.
- Confirm the issuing bank is acceptable and the guarantee is signed by authorised signatories.
- Verify it with the issuing bank directly, not through details printed on the guarantee.
- Check dates: it should cover the whole contract, the warranty and the claim window.
- Record the validity date and set reminders to extend it.
- Store the original securely.
Other supplier assurances are on certificate of insurance, and the terms that depend on a guarantee usually live in a master service agreement or purchase agreement.
Mistakes
- Validity that ends before the warranty does.
- No extension process, so the guarantee lapses silently.
- Accepting a guarantee from a bank you do not know without checking.
- A claim procedure that no one can follow.
- Not claiming before expiry.
- Original is held securely.
- Wording matches the contract.
- Issuing bank has confirmed it.
- Expiry and claim dates are in the register.
- Extension is requested 30 days before expiry.
- Release conditions are tracked.
Last checked: 19 October 2026. General practice. Legal effect depends on the wording, the governing law and local banking rules. Ask counsel for large guarantees.
Frequently asked questions
What is a performance bank guarantee?
A bank's written commitment to pay the buyer a stated sum if the supplier fails to perform its contract.
How much is a performance guarantee?
The contract sets it, commonly as a percentage of the contract value.
How long must a performance guarantee be valid?
Long enough to cover the contract, any warranty or defects period and a claim window after that.
What is the difference between on-demand and conditional?
An on-demand guarantee pays on a written claim. A conditional one needs proof of default.
How do I verify a bank guarantee?
Contact the issuing bank through independently sourced details and confirm the guarantee number, amount, dates and wording.