A debt written off in your accounts may still be a live commercial claim. The 2025 debt discoverability reform has made that distinction more important for businesses pursuing older Scottish debts.
If an invoice disappeared into an old ledger because the loss, responsible party, or supporting records were unclear, the limitation clock may not have started when you assumed. However, age alone never makes a debt recoverable. Your position depends on the jurisdiction, the contract, the evidence, prior correspondence, and the applicable limitation or prescription rules.
Before you restart contact with a debtor, establish which legal framework applies and what your records can prove.
What the Debt Discoverability Reform Changed in 2025
The phrase “discoverability reform” refers to Scottish changes brought into force on 28 February 2025 under the Prescription (Scotland) Act 2018. The change affects when the five-year prescriptive period begins for certain obligations, including claims for loss or damage.
Previously, arguments often focused on when a creditor could reasonably have discovered that it had suffered loss. The revised approach requires more. You need actual or constructive awareness of three points:
- You have suffered loss, injury, or damage.
- The loss was caused by an act or omission.
- You know, or could reasonably be expected to know, the identity of the person responsible.
That third element can matter greatly for complex commercial matters. A business may see an unpaid balance or a financial shortfall, yet lack enough information to identify which supplier, contractor, former tenant, director, or connected company bears legal responsibility.
For a straightforward unpaid invoice, the issue is often simpler. You knew the customer, the amount, and the due date when the invoice fell due. In that case, the reform may have little practical effect. However, it can matter where you discovered the responsible party only after an audit, insolvency investigation, document disclosure, expert review, or a chain of contractual assignments.
A delayed discovery date is not a licence to revive every stale account. You still need a claim that is legally due, supported by evidence, and within the correct statutory time limit.
The Prescription (Scotland) Act 2018 did not create a general right to reopen debts that have already prescribed. Transitional rules and the facts of the individual claim matter. If you have an older Scottish claim, record the date on which you first knew, or should reasonably have known, each required fact. That timeline may be as important as the invoice itself.
Debt Discoverability Reform and Aged Commercial Claims
The debt discoverability reform is most relevant when your loss and the debtor’s identity did not become clear at the same time. This happens more often than many finance teams expect.
Consider property-related arrears. A lease may have changed hands, a guarantor may be disputed, or a managing agent may have held incomplete records. Service charges can also raise difficult questions about whether they are payable as rent, under a lease covenant, or under another agreement. Each route can affect both liability and time limits.
The same applies to construction and professional-services disputes. You may know a project cost more than planned, but not know whether the cause lies with a contractor, consultant, subcontractor, or a party outside your direct contract. An unpaid balance can also mask a wider claim for defective work, misrepresentation, or breach of duty.
You should separate these situations from an ordinary sales invoice. A customer who received goods, accepted the invoice, and missed the payment date is not usually an unknown debtor. The original due date, contractual payment terms, and later written acknowledgments are likely to carry more weight.
For older files, avoid relying on a broad label such as “bad debt.” Instead, identify the legal basis for every sum:
| Question | Why it matters |
|---|---|
| What contract, lease, guarantee, or deed created the obligation? | Different documents may carry different limitation periods. |
| When did payment become due? | This may set the starting point for a standard invoice claim. |
| When did you identify the responsible party? | It may matter under Scottish discoverability rules. |
| Has the debtor admitted liability in writing? | A valid acknowledgment can affect the limitation calculation. |
| Has any payment been made? | Part-payment may restart time in some circumstances. |
| Is there a judgment, security, or insolvency process? | These create separate enforcement and procedural issues. |
The practical takeaway is simple. You should not abandon an aged claim because a ledger says “written off,” and you should not pursue it because a new rule sounds favourable. Review the dates and documents before either decision.
Your Jurisdiction Still Controls the Limitation Clock
UK debt recovery does not follow one clock. England, Wales, Northern Ireland, and Scotland use different rules, while the nature of the obligation can change the result again.
For most simple contract claims in England and Wales, section 5 of the Limitation Act 1980 provides a six-year period. In commercial practice, that commonly means six years from the date payment became due. A deed can have a longer period, often 12 years under section 8.
Scotland is different. Many obligations are subject to a five-year negative prescription rule. The 2025 commencement of the discoverability provisions affects when that period starts for qualifying loss-based claims. Unlike limitation in England and Wales, prescription can extinguish the obligation itself rather than merely give a debtor a defence to court action.
The distinction matters if you trade across the border. The governing-law clause may be relevant, but it is not the only question. Where proceedings are brought, where the debtor is based, the type of claim, and the applicable rules can all affect the analysis. Cross-border B2B debt recovery needs an early legal review, particularly where the account is close to a deadline.
A debtor’s written acknowledgment or part-payment may also change the calculation. In England and Wales, such events can restart the limitation period in appropriate cases. Keep the original emails, settlement proposals, payment receipts, and signed correspondence. A vague telephone note is rarely enough to settle a limitation dispute.
The HMRC guidance on limitation periods also highlights an important point: statutory debts, tax liabilities, judgments, mortgages, and other special categories may not follow the ordinary commercial-invoice rule. Never apply a six-year rule by reflex.
Start With a Recoverability Audit, Not a Demand Letter
When you find an old account, start with an internal audit. A firm demand sent too early can weaken your position, trigger a complaint, or invite a well-founded limitation defence.
First, confirm the debt exists. Locate the contract or accepted terms, the order, delivery evidence, invoices, statements, credit notes, and payment history. Then reconcile the figure. Interest, collection charges, VAT treatment, disputed items, and earlier settlements can all distort an old balance.
Next, identify the correct legal debtor. Companies change names, dissolve, merge, enter administration, or assign liabilities. A director is not automatically liable for a company debt. A personal guarantee may help, but only if it is valid, signed, and covers the relevant obligation.
You should also build a date chronology. Include:
- The contract date and payment terms.
- Each invoice date, due date, and delivery or completion date.
- Complaints, disputes, credits, and agreed payment plans.
- Any written admission, settlement offer, or part-payment.
- The date you learned facts that may matter to discoverability.
- Any previous legal claim, judgment, insolvency filing, or enforcement action.
This exercise often changes the next step. You may find a clear, recoverable debt that has simply received poor follow-up. You may also find that a claim is disputed, time-barred, prescribed, or too weak to justify further spend.
For an early sense-check, the guidance on statute-barred debts explains how limitation works in England and Wales. Its consumer focus does not replace advice on a commercial case, but the distinction between a debt existing and a court claim being time-barred remains important.
If your records show an active, properly evidenced balance, you can then make a measured commercial decision. Recovery may be worthwhile even when litigation is not. A debtor may agree a settlement to preserve a relationship, avoid cost, or resolve a disputed account. You must never misstate your legal rights to force that outcome.
Build the Evidence a Debt Recovery Agency Will Need
An old debt usually fails because the paperwork is fragmented, not because the debtor has a clever defence. Your first task is to turn loose files into a reliable account history.
Photo by Nicola Barts
Create a single file with the signed contract, standard terms, purchase order, invoice, proof of delivery, and the ledger. If services were supplied, include timesheets, acceptance emails, completion certificates, or work reports. If you rely on a guarantee, keep the original guarantee and evidence that the guarantor received any required notices.
Emails deserve careful treatment. Preserve complete message chains, including headers and attachments. Do not copy only the convenient line where the customer appears to accept the balance. A collector, solicitor, or court will need the wider context, especially if the debtor later says the admission was conditional or part of a settlement discussion.
Where the debt is disputed, separate agreed and disputed sums. A customer may accept the main invoice but challenge late-delivery losses, quality issues, or a retention amount. Chasing the undisputed amount first may produce payment faster and reduce the scope of the dispute.
You should also verify that the creditor named on the invoice still owns the claim. Group restructures, asset sales, factoring arrangements, and assignments can complicate ownership. If another entity owns the receivable, you need its authority before collection begins.
A suitable debt recovery agency can assess the age, value, location, documentation, and dispute profile before you appoint anyone. This is useful when an account calls for a specialist in commercial, property, international, or disputed recoveries rather than a standard volume-collection approach.
Choose a Proportionate Route to Payment
Once your evidence and dates are clear, match the recovery route to the account. A polite but direct request can work where the debtor has simply deprioritised payment. Attach the invoice schedule, state the amount due, give a realistic deadline, and name a contact who can resolve a genuine query.
If the debtor has gone silent, a formal letter before action may be appropriate. It should identify the legal basis of the debt, list the documents available, set out interest and charges only where permitted, and give the debtor a fair opportunity to respond. Avoid inflated costs or threats that you cannot carry out.
For qualifying business debts, you may have rights under the Late Payment of Commercial Debts legislation. The statutory framework can allow interest and fixed recovery compensation, subject to the contract and circumstances. Check your terms before adding any sum, because contractual provisions can affect the calculation.
Mediation or a negotiated instalment plan may be sensible where the debtor acknowledges the balance but faces cash-flow pressure. Get any agreement in writing. State the exact balance, payment dates, interest treatment, and what happens after a missed instalment. A vague promise to “clear it soon” has little value.
Court action should follow a cost-benefit assessment. Consider the amount due, likely defence, debtor solvency, available assets, jurisdiction, and enforcement prospects. Winning a judgment against an insolvent company may add cost without producing payment. Conversely, a properly documented high-value claim against a solvent debtor may justify rapid escalation.
Your strongest recovery position comes from accurate dates, complete evidence, and an honest statement of rights. Pressure cannot repair a claim that has already expired.
Treat Written-Off Debts With Care and Respect
An accounting write-off is usually a financial reporting decision. It does not itself cancel the contractual obligation. Yet you must not confuse that accounting entry with legal proof that the debt remains enforceable.
Before re-contacting a debtor, check for prior settlement agreements, full-and-final payment terms, insolvency events, dissolved-company procedures, court orders, or a previous decision to waive the balance. You should also consider data-protection obligations when using old contact details or sharing records with a third-party collector.
Consumer protections matter where a debt has a personal rather than corporate element. For regulated consumer-credit debts, the Financial Conduct Authority’s CONC 7.15 rules address statute-barred debts and make clear that firms must not mislead people about their obligations. Even in commercial collections, the same basic discipline applies. You should communicate accurately, fairly, and without harassment.
This is not legal advice. Limitation and prescription rules vary by jurisdiction and can turn on facts that are easy to miss. Before pursuing a high-value, disputed, cross-border, or aged claim, seek advice from a qualified solicitor or debt-recovery professional in the relevant jurisdiction.
Make Old Debts a Managed Asset, Not a Forgotten Ledger
The 2025 reform gives some Scottish creditors a fairer starting point where they could not reasonably identify the loss and the responsible party. It does not turn every old entry into a recoverable asset.
Your best next step is to audit the debt, confirm the legal debtor, preserve the evidence, and calculate the correct deadline before contact begins. A written-off invoice may still be worth pursuing, but only when the legal position and the records support it.
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