Set-off is a well-established mechanism in English law that allows a party who owes money to reduce or extinguish that liability by applying a cross-claim or counter-debt owed to them by the same creditor. Used correctly, it can be an efficient alternative – or a complement – to formal debt collection proceedings, allowing international businesses to recover unpaid invoices without necessarily commencing separate litigation. Understanding the applicable type of set-off, the procedural rules under the Civil Procedure Rules (CPR), and the practical requirements is essential before relying on this remedy.
What Set-Off Means in English Law
English law recognises several distinct forms of set-off, each with different requirements and effects. The principal categories are legal set-off, equitable set-off, and insolvency set-off. These are not interchangeable: the availability of a particular form depends on the nature of the debts, the relationship between the parties, and the procedural stage at which set-off is raised.
- Legal set-off applies where both debts are liquidated (ascertained in amount or easily ascertainable) and presently due and payable. It operates as a procedural defence and must be specifically pleaded.
- Equitable set-off is broader: it applies where the cross-claim is so closely connected with the claimant's demand that it would be inequitable to enforce payment without taking the cross-claim into account. The debts need not both be liquidated.
- Insolvency set-off arises automatically in formal insolvency proceedings when mutual dealings exist between a debtor and a creditor. It is mandatory in nature and cannot be excluded by contract under English law. This form is particularly significant if the debtor or creditor is subject to bankruptcy or restructuring proceedings in the United Kingdom.
A fourth category – contractual set-off – arises where the parties' agreement expressly provides for it, either expanding or restricting the rights that would otherwise apply at common law or in equity. Foreign businesses operating in the UK market should check their standard terms carefully, as a poorly drafted clause may inadvertently waive set-off rights or, conversely, create unexpected exposure to a counterparty's cross-claims.
Step-by-Step: How to Exercise Set-Off in Practice
Step 1 – Identify and Quantify Both Debts
Before raising set-off in any context, identify precisely what you are owed and what you owe. Both figures should be documented with invoices, contracts, statements of account, and any correspondence acknowledging the sums. For legal set-off, both debts must be due and payable at the relevant date. For equitable set-off, the cross-claim must be sufficiently connected to the primary claim; a debt arising from a wholly unrelated transaction is unlikely to qualify.
Where the cross-claim is unliquidated – for example, a claim in damages for defective goods – you will need to form a reasonable estimate of its value and support it with evidence early in the process. Courts will scrutinise this, and an overstated cross-claim can undermine your credibility.
Step 2 – Review the Contract and Governing Law
Check whether the contract contains any no set-off clause or a clause requiring payment without deduction. Such clauses are enforceable in commercial contracts between sophisticated parties under English law, although they may be subject to challenge under the Unfair Contract Terms Act 1977 in certain consumer or standard-form contexts. Where the contract is governed by a foreign law but performance is in the UK, specific advice on the interaction between the governing law and English procedural rules is advisable.
Also verify whether either party is subject to any regulatory or sanctions-related restrictions. Entities on OFSI's consolidated list of financial sanctions targets, for instance, may be subject to prohibitions that affect the ability to settle or net off obligations. If the counterparty has FCA-regulated activities, certain payment set-off arrangements may require additional care.
Step 3 – Give Notice and Attempt Resolution
Where set-off is being used as a tool to recover or reduce a debt outside formal litigation, the practical starting point is a clear written notice. This notice should state the amount you claim to be owed, the amount you acknowledge owing, and the net sum (if any) that you contend remains payable after set-off. The notice should reference the contractual or legal basis relied upon.
Many commercial disputes involving set-off are resolved at this stage through negotiation. Late payment interest may also be claimed under the Late Payment of Commercial Debts (Interest) Act 1998, which provides a statutory right to interest on qualifying commercial debts. This can increase the leverage available to a creditor seeking to negotiate a net settlement.
If your situation involves a complex cross-claim or a counterparty that is contesting the set-off, our team is available to advise on strategy. You are welcome to write to info@ferrazwhitmore.com or visit our contacts page to arrange a preliminary discussion.
Step 4 – Raise Set-Off in Proceedings under the CPR
If the matter proceeds to litigation, set-off must be pleaded as a defence (and, where appropriate, a counterclaim) in accordance with the Civil Procedure Rules (CPR). The key procedural points are as follows:
- Set-off raised as a defence to a money claim should be included in the Defence, served within the time limits prescribed by CPR Part 15 (generally 14 days after service of Particulars of Claim, or 28 days where an acknowledgement of service is filed).
- Where the cross-claim exceeds the primary debt, the excess can be pursued as a counterclaim in the same proceedings, avoiding the cost and delay of separate litigation.
- In summary judgment applications, the defendant relying on equitable set-off must demonstrate that the cross-claim has a real prospect of success and is sufficiently connected to the claimant's claim. A bare assertion is insufficient.
- High Court proceedings are appropriate for larger claims; the Business and Property Courts handle most commercial set-off disputes of significant value. County Court procedures apply to smaller claims.
- Where a claimant obtains a payment order or judgment and the defendant then seeks to raise set-off, the court retains a discretion to stay enforcement of the judgment pending resolution of the cross-claim, but this is not automatic.
Step 5 – Enforcement Considerations
If set-off is successfully established and a net judgment is obtained in your favour, the usual enforcement of judgment mechanisms are available: third party debt orders, charging orders, writs of control, and attachment of earnings orders. Where speed is critical and there is a risk of asset dissipation, an asset freezing order (formerly a Mareva injunction) may be sought in the High Court at the outset or during proceedings, provided the stringent legal tests are met.
For foreign creditors seeking to enforce an English judgment abroad, or to enforce a foreign judgment in England and Wales, the applicable regime depends on the date of the relevant judgment and the treaties in force between the UK and the country concerned. Post-Brexit arrangements govern enforcement with EU member states, while bilateral conventions and common law rules apply in other cases.
Documents You Will Need
Preparing the right documentation from the outset significantly affects both the strength of a set-off claim and the speed of resolution. Commonly required documents include:
- Signed contracts, purchase orders, and terms and conditions governing each transaction
- Invoices for both the primary debt and the cross-claim, with corresponding delivery notes or acceptance records
- Bank statements or payment records showing what has already been paid
- Written correspondence – including emails – acknowledging the debts or disputing amounts
- Any notices of assignment if the debt has changed hands
- Evidence of the counterparty's identity and, for corporate entities, information available from Companies House (such as registered office, directors, and filing history)
- Expert or technical evidence if the cross-claim relates to defective performance
Realistic Timelines
The time required to resolve a set-off dispute depends heavily on whether the counterparty contests the cross-claim and on the court track to which the matter is allocated. As a general guide:
- Pre-action negotiation and notice period: typically 1 to 6 weeks, depending on responsiveness
- Fast-track claims (smaller value, limited issues): often resolved within 6 to 12 months of issue
- Multi-track claims in the Business and Property Courts: resolution within 12 to 24 months is common for cases with moderate complexity; more complex matters may take longer
- Summary judgment applications, where applicable: can reduce timelines significantly if the cross-claim lacks a realistic prospect of success
Where insolvency proceedings are involved, the automatic nature of insolvency set-off may crystallise the position more quickly, but the distribution timeline within the insolvency is governed by the relevant insolvency regime.
Cost Drivers and Practical Considerations for International Businesses
The cost of set-off proceedings in England and Wales varies considerably. Key cost drivers include the complexity of the cross-claim (particularly where it requires expert evidence), the number of transactions in dispute, the value of the net sum at stake, and whether the counterparty actively contests the matter. Court fees in England and Wales are calculated on a sliding scale by reference to the value of the claim.
For international businesses, additional cost and risk factors include: currency exchange exposure if the debts are in different currencies; the need to obtain apostilles or certified translations of foreign documents; potential jurisdictional challenges from a counterparty incorporated or domiciled outside England and Wales; and the risk that a no-set-off clause in the contract has gone unnoticed.
For a fuller analysis of how set-off interacts with netting strategies in cross-border transactions, our detailed commentary on set-off and netting as debt recovery strategies in the United Kingdom may be a useful starting point.
Common Errors Made by Foreign Clients
International businesses unfamiliar with English law frequently encounter the following pitfalls when attempting to use set-off:
- Assuming set-off is always available: many standard commercial contracts include no-set-off or pay-now-argue-later clauses that are routinely enforced by English courts in B2B contexts.
- Failing to plead set-off in time: a defence not raised promptly may be struck out or may require permission to amend, adding cost and delay.
- Confusing set-off with a counterclaim: a counterclaim is a separate cause of action and does not automatically reduce the amount the defendant must pay pending judgment; set-off, if successfully established, does.
- Overlooking insolvency triggers: if the counterparty becomes insolvent, the rules shift dramatically. Attempting voluntary set-off after insolvency proceedings have commenced without understanding the automatic set-off regime can expose a creditor to claims of preference or even contempt.
- Underestimating the evidential burden: courts expect contemporaneous documentary evidence. Reconstructed or back-dated documents carry significant risk.
- Ignoring late payment interest: failure to include a claim for statutory interest under the Late Payment of Commercial Debts (Interest) Act 1998 means leaving a legitimate recovery on the table.
Decision Checklist Before Relying on Set-Off
Before proceeding, consider whether each of the following conditions is satisfied:
- Are both the primary debt and the cross-claim capable of being set off under the applicable category of set-off?
- Is the cross-claim due and payable (for legal set-off) or sufficiently connected to the primary debt (for equitable set-off)?
- Does the contract contain a no-set-off clause or any provision excluding deductions?
- Is either party subject to insolvency, regulatory, or sanctions restrictions that affect the ability to set off?
- Is there sufficient documentary evidence to support both the debt and the cross-claim?
- Has pre-action correspondence been sent in compliance with the relevant Pre-Action Protocol?
- Have you considered whether set-off should be combined with other debt recovery remedies available in the United Kingdom?
If you are uncertain about any of these steps or need guidance on structuring a set-off strategy in a cross-border context, Ferraz & Whitmore's team is available to assist. Please contact us at info@ferrazwhitmore.com or through our contacts page.
Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. Ferraz & Whitmore assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@ferrazwhitmore.com.