Retention Money Guarantee

A retention money guarantee is an undertaking by a bank or surety, given to the owner of a construction or supply project, that replaces the cash the owner would otherwise hold back from the contractor's payments. Instead of withholding a slice of every invoice until the works are complete and defects are fixed, the owner pays in full and holds the guarantee, which it can call if the contractor fails to remedy defects or otherwise breaches the contract.

The guarantee belongs to the late stage of a project, after the bid bond and alongside the performance bond. Where an advance payment guarantee protects money paid early, a retention guarantee releases money that would otherwise be paid late. It is common under international standard forms such as those published by FIDIC and is usually issued under URDG 758 or as a standby letter of credit.

Picture paying a decorator in instalments and keeping back a small part of each payment until you are sure the paint does not peel. That kept-back money is your insurance, but for the decorator it is wages earned and not yet received. If the decorator does lots of jobs, those small amounts add up to a large sum sitting in other people's pockets.

A retention money guarantee solves this by letting the decorator's bank promise to pay you the kept-back amount if the work turns out faulty and is not fixed. You hand over the full payment straight away, the decorator gets its cash sooner, and you still have someone to turn to if something goes wrong. When the checking period is over, the promise ends.

Contracts state a retention rate applied to each interim payment and usually a cap on the total held. The amount retained on each payment is:

• $R$ is the retention deducted from the current payment.
• $\rho$ is the retention rate, written as a decimal.
• $V$ is the gross value certified in the current payment.
• $C$ is the retention cap and $R_{\text{prior}}$ is retention already held.

Suppose a contract worth 20,000,000 has a 10% retention rate capped at 5% of the contract price, which is 1,000,000. A first certificate of 6,000,000 attracts 600,000 of retention. A second certificate of 6,000,000 would attract another 600,000, but only 400,000 remains under the cap, so 400,000 is deducted and retention stops. A retention money guarantee for 1,000,000 lets the contractor collect that sum in cash instead.

Contracts typically provide for retention to be released in two stages: part, often half, when the works are taken over, and the balance at the end of the defects liability or defects notification period. A retention money guarantee mirrors this. The contractor's bank issues a guarantee in favour of the owner, sometimes in one amount equal to the cap and sometimes in stages that rise as more retention would have accrued. On taking-over, the guarantee reduces by the amount that would have been released, and it expires once the defects period ends and the owner has certified completion.

The guarantee is usually payable on first demand with a statement that the contractor is in breach, often worded around failure to remedy defects. Where the owner wants a local issuer, the contractor's bank sends a counter guarantee to a bank in the owner's country. The issuing bank counts the exposure against the contractor's limits and may take collateral, so the cash freed by the guarantee is partly offset by the use of guarantee lines.

• Cash flow. Retention can amount to a contractor's whole profit margin on a job. Replacing it with a guarantee improves cash flow and shortens the cash conversion cycle, which matters for firms with many projects running at once.
• Protection against owner failure. Cash retention held by an owner or main contractor is exposed if that party becomes insolvent. In the United Kingdom, the collapse of the contractor Carillion in January 2018 left many subcontractors unable to recover retention, which fed a long policy debate about ring-fencing retention in trust or escrow. A guarantee avoids the problem because the contractor holds its own money.
• Owner security. The owner swaps an unsecured right to keep its own cash for a claim on a bank, which reduces its credit risk on the contractor during the defects period, provided the issuer is sound.

For the owner, a guarantee is weaker than cash in hand if the issuer is in a jurisdiction where enforcement is slow or the bank itself is weak. Wording matters: a guarantee that expires on a fixed date may lapse before the defects period actually ends, so many owners require an expiry tied to the issue of a defects certificate plus a margin, or a clause allowing extension. For the contractor, the risk is an abusive call, since the bank will pay a compliant demand even when the contractor disputes the alleged defects; recovery then depends on the contract's dispute process. Subcontractors further down the chain rarely have access to bank guarantee lines, so retention protection is uneven, and some markets accept a surety bond instead. Retention terms are often negotiated together with wider supplier-payment terms.

• FIDIC (International Federation of Consulting Engineers)
• International Chamber of Commerce