Contra Charge

A contra charge is an industry term used across UK construction to describe a deduction made by a main contractor from money owed to a subcontractor. The contractor applies the deduction to recover costs it claims to have incurred because of the subcontractor's failure to perform their contractual obligations. Common examples include the cost of making good defects left unaddressed, clearing materials abandoned on site, hiring additional labour or plant to complete work allegedly left undone, and supervision costs arising from the subcontractor's poor performance.

Legally, a contra charge is not a defined category in contract law - it is industry shorthand for a set-off or cross-claim. What determines its enforceability is whether the right to make the deduction exists in the contract, whether proper notice was given, and whether the amount claimed is supported by evidence.

When Contra Charges Are Enforceable

For a contra charge to hold up, three conditions generally need to be satisfied. First, the contract must provide a clear basis for the deduction - typically a clause covering defects, set-off rights, or the contractor's ability to engage others once the subcontractor has failed to remedy an issue. Second, the contractor should have given the subcontractor prior notice of the alleged default and allowed a reasonable period - often seven to fourteen days - to correct the problem themselves. Third, the deduction must be covered by a valid pay less notice issued before the final date for payment, as required by the Housing Grants, Construction and Regeneration Act 1996.

A contra charge that skips any of these steps - particularly the pay less notice requirement - is procedurally defective, regardless of whether the underlying complaint has merit.

How Contra Charge Disputes Arise

Contra charges are frequently contested. Problems arise when charges appear in a payment notice without prior warning, when the claimed amounts are described vaguely with no supporting invoices or site records, or when costs relate to events outside the subcontractor's control - such as design changes, employer instructions, or delays caused by other trades on site.

Some subcontracts also contain cross-contract set-off clauses, which allow a contractor to deduct losses from one project against payments due on a separate job entirely. These provisions can significantly increase the financial exposure of a subcontractor working on multiple projects for the same client.

The burden of proof lies with the party making the claim. A contractor asserting a contra charge must show that the subcontractor breached a contractual obligation, that the breach caused a real loss, and that the loss has been correctly quantified. Contra charges described only as "management costs" or "general site losses" - with no substantiating documents - are legally weak regardless of how they appear in a payment notice.