Review Clause

The most legally secure way to preserve flexibility in a public contract is to build that flexibility into the procurement documents from the outset. A review clause is the legal instrument that achieves this: it signals to all tenderers, in advance, the circumstances and extent to which the contract may be changed after award. Modifications made within the scope of a well-drafted review clause are lawful as non-substantial modifications, with no need to re-run the competition.

What is a review clause?

A review clause is a provision in the procurement documents (typically in the contract notice, the invitation to tender, or the draft contract attached to the tender pack) that describes, clearly and unambiguously, the conditions under which the contracting authority may modify the contract after award. Article 72(1)(a) of Directive 2014/24/EU provides that contracts may be modified without a new procedure where the modification is provided for in clear, precise, and unambiguous review clauses or options in the initial procurement documents, provided those clauses state the scope and nature of possible modifications or options as well as the conditions under which they may be used, and do not provide for modifications or options that would alter the overall nature of the contract.

The three-part requirement is demanding. The clause must describe the scope of the potential modification (what can change), the nature (how it can change), and the conditions (when and why it can change). A review clause that simply reserves the authority's right to "vary the contract as necessary" does not meet the standard. Nor does a clause that would permit modifications so large that the overall character of the contract would be altered.

A price revision clause is the most common type of review clause, allowing price adjustments linked to an index. Other review clauses may cover: extension options for additional periods of performance, scope options for additional sites or service lines, and technology refresh provisions allowing specification updates within defined parameters.

Review clauses have significant commercial value for both buyers and suppliers. For buyers, they reduce procurement transaction costs by avoiding the need to re-tender for anticipated changes. For suppliers, they provide clarity about the maximum extent to which the contract can evolve, allowing more accurate pricing of the base offer.

Why it matters for bidders

When reviewing tender documents, identifying and understanding all review clauses and options is essential commercial analysis. A contract with a two-plus-one year structure (a two-year initial term with a one-year extension option) is worth considerably more than a two-year contract if you are the incumbent when the option is exercised. Similarly, scope options for additional sites or service lines can materially increase contract value without the need to compete again.

Reviewing review clauses also tells you the maximum exposure of the contract to modification. If a contract contains broad review clauses, the effective scope of what you might need to deliver could expand significantly beyond the base specification. Price those risks accordingly.

Example

A Portuguese water utility publishes a framework for laboratory testing services. The procurement documents include a review clause permitting the scope to be extended to cover testing at up to three additional treatment works, at a pre-agreed rate per sample, if the authority commissions additional works within the contract term. When a new treatment facility is commissioned two years into the contract, the authority activates the option. The activation is a non-substantial modification made within the scope of the pre-published review clause, requiring no new procedure.

Frequently Asked Questions

What makes a review clause "clear, precise, and unambiguous"?

Courts and procurement review bodies have interpreted this standard to require that any informed tenderer reading the clause could determine the maximum extent of their potential obligation. Vague or open-ended clauses that leave material terms to future negotiation do not meet the standard.

Can a review clause permit modifications that change the nature of the contract?

No. Article 72(1)(a) explicitly prohibits review clauses that would allow modifications altering the overall nature of the contract. A clause in a cleaning services contract that could permit adding IT services would not be lawful.

Do review clauses need to appear in the contract notice or only in the contract?

They should appear in the initial procurement documents that all tenderers see. This typically means the contract notice, the invitation to tender, or the draft contract forming part of the tender pack. A clause that only appears in the signed contract (which tenderers see only after award) does not satisfy the transparency requirement.