Performance Bond

A performance bond is a post-award financial instrument that protects a contracting authority against contractor default or material underperformance during the life of the contract. Once a contract is signed, the contracting authority holds the bond as a form of insurance. If the contractor fails to meet its obligations, the buyer can call the bond to recover costs associated with remediation, re-procurement, or damages, without first having to pursue litigation.

What is a Performance Bond?

Performance bonds are typically set at between 5% and 10% of the total contract value, though some authorities require higher percentages for complex or high-risk contracts. Like a tender bond, a performance bond can be structured as an unconditional on-demand bank guarantee or as a conditional bond issued by a surety. An on-demand instrument pays out on the authority's written demand, regardless of any dispute about whether default has actually occurred. A conditional bond requires the authority to demonstrate that a breach occurred before the surety will pay.

Directive 2014/24/EU does not prescribe a universal requirement for performance bonds, leaving it to contracting authorities to decide whether to require them based on the risk profile of the contract. In practice, performance bonds are standard in large infrastructure works, construction contracts, long-term service contracts, and any engagement where mobilisation costs are significant. The requirement, if any, and the acceptable form of the bond must be stated in the contract documents before the tender is submitted.

The bond remains in force until the end of the defects liability period or the contract term, whichever is specified. It is then either released automatically or returned on formal request. Some contracts allow the bond value to step down as the contract progresses and risk diminishes.

A parent company guarantee is sometimes accepted in lieu of a performance bond, particularly in the UK and for group-structure suppliers. The parent guarantee provides equivalent contractual recourse through the legal obligations of the parent entity rather than through a third-party financial instrument.

Why it matters for bidders

The cost of procuring a performance bond from a bank or surety is a direct bid cost that must be built into the contract price or absorbed from margin. Fees typically range from 0.5% to 2% of the bond value per annum. Beyond cost, issuing a performance bond consumes credit capacity: banks and sureties treat outstanding bonds as contingent liabilities against their lending limits to the supplier. On large contracts, this can constrain a supplier's ability to bid on concurrent opportunities.

Suppliers should ensure the bond terms mirror the contract terms. A bond that expires before the defects liability period ends leaves the buyer exposed and may be treated as a contract breach.

Example

A German federal authority awards a EUR 20 million IT systems integration contract and requires a performance bond of 10% of the contract value, totalling EUR 2 million, valid for the 36-month contract period plus a 12-month defects period. The supplier arranges an unconditional bank guarantee from its primary bank. The bank charges an annual fee of 0.8% on the bond value. The supplier prices this EUR 16,000 per annum into its costs at the bidding stage.

Frequently Asked Questions

Can a contracting authority call the bond even if the contractor disputes the alleged default?

Under an unconditional on-demand bond, yes. The bank or surety pays on written demand from the authority without first resolving the underlying dispute. The contractor's remedy is to challenge the call through the courts after the fact, which can be a lengthy process. This is why suppliers should scrutinise bond terms carefully and ensure the contract contains clear, objective default triggers.

Is a performance bond required on all European public contracts?

No. It is at the discretion of the contracting authority. Some authorities require them only above certain contract value thresholds. Others require them across all capital works but not services. The procurement notice and contract documents will specify whether a bond is required and in what form.

What is the difference between a performance bond and a retention bond?

A performance bond secures the contractor's overall performance obligations during the contract. A retention bond specifically replaces cash retention that the authority would otherwise withhold from interim payments. Both provide financial security to the buyer, but they operate at different points in the payment cycle and cover different risks.