Target cost contracting makes records part of the bargain.
The release of the JCT Target Cost Contract 2024 is a useful reminder that some contract models make record discipline central to the commercial bargain. Where payment and risk-sharing depend on actual allowable cost, cost transparency and pain/gain mechanisms, records are not secondary administration. They are the basis on which value is recovered.
For contractors, target cost contracting can be commercially attractive. It may align incentives, encourage collaboration and create a more transparent approach to project cost. But it also changes the evidential pressure. The contractor is not simply proving that work was carried out. It may need to prove what cost was incurred, why it was incurred, whether it is allowable under the contract, how it should be allocated, and how it interacts with change, delay, risk events and the target cost mechanism.
That is why target cost contracting should not be treated as a softer or more collaborative version of traditional contracting. It can be collaborative, but it is still commercially disciplined. The records decide how the collaboration is valued.
Why the contract model matters
Under a lump sum model, the contractor’s recovery position is often centred on scope, change, valuation, payment notices, delay and loss and expense. Under a target cost model, the commercial focus shifts. The contractor’s position depends more heavily on whether actual cost has been captured, categorised and substantiated in the manner required by the contract.
That distinction matters. In target cost contracting, the contractor may be exposed if its cost records are incomplete, if costs are allocated to the wrong activity, if labour and plant are not recorded with sufficient detail, if subcontractor costs are not reconciled properly, or if cost increases cannot be connected to the relevant project event. The project team may understand why additional cost was incurred. That will not necessarily be enough. The contract may require the contractor to demonstrate the cost through a defined mechanism, supported by auditable records and linked to the contractual basis for recovery.
In practical terms, the question becomes more specific:
Was the cost incurred?
Was it properly recorded?
Is it allowable?
Is it allocated correctly?
Was it caused by a recoverable event?
Does it affect the target cost, the pain/gain position, or both?
If those questions cannot be answered from the project record, value can become difficult to protect.
Cost transparency is not the same as cost recovery
A common mistake is to treat transparency as enough. It is not. Open-book records may show that money was spent. They do not automatically prove that the cost is recoverable, properly allocated, or caused by an employer-risk event. They also do not remove the need to comply with notices, change procedures, programme obligations or dispute mechanisms.
This is particularly important where the project has been affected by variations, design development, access restrictions, procurement issues, acceleration, disruption or delay. Each of those events may increase cost. But the contractor still needs to show how the cost arose, what activity it relates to, whether it falls within allowable cost, and whether the contract permits it to be recovered or included in the target cost adjustment. The risk is that cost data exists, but it does not prove the point that needs to be proved. Timesheets, invoices and receipts may show expenditure. They may not show entitlement. That is where target cost disputes often become difficult: the records are present, but they are not organised around the contractual test. For contractors, this distinction is critical. Cost transparency helps. Cost recovery still requires structure.
Where contractors commonly lose value
Target cost risk often appears gradually. The project may be progressing, costs may be recorded, and commercial meetings may be taking place. But if the records are not being built around the contract, the recovery position may be weakening in the background.
Common pressure points include:
labour records that do not show the activity, location or cause of additional resource;
plant records that do not explain why plant was retained, stood idle or redeployed;
subcontractor accounts that are not aligned with the contractor’s own change records;
procurement cost increases that are not connected to a contractual risk event;
variations carried out without clear instruction or valuation route;
disruption costs recorded globally rather than linked to specific events;
delay costs treated as recoverable without separate proof of entitlement;
programme impact not connected to cost movement;
risk allowances and target adjustments not clearly distinguished;
pain/gain implications considered too late.
These are not merely administrative issues. They affect commercial outcome. A contractor may incur real cost and still struggle to recover or protect margin if the evidence does not connect that cost to the contract.
This is particularly important because target cost arrangements often create a different negotiation dynamic. The parties may be discussing cost collaboratively during the project, but once the financial outcome sharpens, the scrutiny of records can become more adversarial. What was accepted informally during delivery may later be tested closely when the final pain/gain position, final account or dispute is assessed.
The link between change, delay and target cost
Target cost contracting does not remove the need to manage change and delay. It often makes that management more important. Where the scope changes, the contractor needs a clear route for adjusting the target cost. Where employer-risk delay affects the programme, the contractor needs to identify the time and cost consequences. Where disruption increases labour or plant cost, the contractor needs records that show cause, effect and allocation.
This is where target cost and delay analysis can overlap. Additional cost may arise because the project took longer, because productivity reduced, because sequence changed, because access was restricted, or because design information arrived late. Those issues must be recorded while the facts are live. If the contractor waits until the end of the project, the position may become difficult to reconstruct. The cost ledger may show increased expenditure, but it may not show why the cost was incurred, whether it was caused by a compensable event, or whether it should alter the target cost position. That is the commercial danger. The contractor may have data without a recovery narrative.
The practical message for contractors
The practical lesson is that target cost contracting requires earlier and more integrated commercial discipline. Before signing, contractors should understand how the contract defines allowable cost, disallowed cost, target cost adjustment, pain/gain sharing, change valuation, audit rights, records, programme obligations and dispute resolution. Those provisions should not be reviewed in isolation. They need to be tested against the contractor’s actual delivery systems.
During delivery, records should be organised around the contract’s payment logic. It is not enough to hold invoices, receipts and timesheets somewhere in the system. The evidence needs to explain entitlement, allocation, causation and value. That means the contractor should align its commercial, planning and site records from the outset. Cost records should link to activities. Activities should link to programme movement. Programme movement should link to causes. Causes should link to notices, instructions, change events or risk allocation. Without that structure, the contractor may be left with expenditure but not recoverability.
In practical terms, the contractor should be able to answer, contemporaneously:
What cost has been incurred?
Which activity or work package does it relate to?
What caused it?
Is it allowable under the contract?
Does it adjust the target cost?
Does it affect the pain/gain position?
What records prove the position?
That is the discipline that protects value.
Legalbuild’s view
For Legalbuild, target cost contracting reinforces a broader commercial point: payment entitlement is not only about doing the work. It is about proving the work, the cost and the contractual basis for recovery. A target cost model rewards contractors who manage records properly while the facts are live. It penalises those who try to reconstruct cost logic after the event. Where cost transparency is part of the bargain, the contractor’s recovery position must be built continuously.
That is why Legalbuild’s model places emphasis on live contract administration, evidence capture and commercial governance. Target cost contracting requires the legal, commercial, planning and quantum position to be aligned from the outset. Notices, instructions, cost records, programme records and valuation logic all need to point in the same direction. Target cost contracting does not reduce the need for discipline. It makes discipline more visible. The contractor that controls the record controls the commercial position.
Source note: JCT Target Cost Contract 2024; JCT 2024 Edition release materials.
