How Long Do Overpayments Remain Recoverable?

A. Why This Matters Now

For finance leadership, this is not merely a legal issue — it is an integral part of sound liquidity and risk management. For operational Accounts Payable teams, it primarily means:

• identifying suspicious transactions at an early stage,
• documenting them properly, and
• following up in a structured and consistent manner.

It is precisely at this intersection of legal requirements, data analysis, and operational execution that the outcome is determined: whether an accounting error can still be converted into a successful recovery — or becomes a permanent cash loss.

Based on our project experience, we consistently see the same root causes recurring within historically evolved procure-to-pay environments:

• duplicate invoices,
• weaknesses in the three-way matching process,
• poor-quality supplier master data, or
• manual exceptions in the approval process.

Recovery Audit therefore does not begin with the recovery claim alone, but with a structured root-cause analysis.

B. Are Overpayments Subject to Different Limitation Periods Than Ordinary Outstanding Claims?

The short answer is: depending on the country, yes — and that is precisely why overpayment recoveries should not be treated in the same way as ordinary receivables.

In Germany, the recovery of overpayments (duplicate payments) is often based on unjust enrichment law under Section 812 of the German Civil Code (BGB). Put simply:

Whoever receives funds without legal justification is obligated to return them.

Such claims are generally subject to the standard limitation period of three years pursuant to Section 195 BGB. Equally important is Section 199 BGB: the limitation period does not begin on the date of payment itself, but at the end of the year in which the claim arose and the company became aware — or should reasonably have become aware — of the relevant circumstances. For example, if an overpayment is identified in 2026, the standard limitation period would typically expire on December 31, 2029.

Just as important is the practical handling of suspension and restart of limitation periods. Documented negotiations may suspend the running of the limitation period. Legal collection procedures or formal litigation can also become decisive shortly before expiry deadlines are reached. Companies should therefore not rely on informal emails or undocumented reminders, but instead maintain clear and traceable documentation for every recovery case.

In Austria, the legal situation differs. Incorrect overpayments are generally treated as unjust enrichment claims as well. However, such claims may remain enforceable significantly longer than ordinary commercial receivables, which usually expire after three years. For this reason, reviewing older overpayment cases is often worthwhile — far more frequently than many organizations assume. However, shorter limitation periods may apply in cases involving recurring periodic overpayments.

In Switzerland, the situation can be almost the opposite. Claims arising from unjust enrichment due to overpayments are generally subject to a three-year limitation period from the date of awareness and, at the latest, ten years from the date the claim arose. Ordinary receivables, by contrast, often remain enforceable for up to ten years, while certain recurring or service-related claims may expire after five years. Organizations that approach overpayment recoveries using only general receivables logic therefore risk initiating recovery actions too late.

C. Which Jurisdiction Matters — the Supplier’s or the Claimant’s?

In cross-border cases, this is a common question — but legally, it is often too simplistic. In most situations, the decisive factor is not merely where one of the parties is located, but which law actually governs the claim.

In particular, four points must be examined:

• the governing law clause within the contract,
• the underlying legal relationship,
• the place where the enrichment occurred, and
• the competent jurisdiction.

Where a clear supply or service agreement exists and contains a governing law clause, that contractual framework will often also shape the recovery claim itself. If no clear contractual linkage exists, the situation becomes more complex. Within the EU, rules governing unjust enrichment and applicable law may apply. In Swiss-related cases, Swiss private international law can become relevant. For finance teams, this means one thing in practice: do not wait until the collection stage to consider jurisdictional questions. The applicable legal framework should already be assessed when the recovery case is first established.

D. Why Older Overpayment Cases Are Still Worth Reviewing

This is where commercial reality becomes relevant. Based on our project experience, a significant share of older or legally sensitive overpayment cases can still be successfully recovered, depending on the industry and supplier environment. This is particularly true when:

• the supplier relationship remains active,
• the supporting documentation is plausible and well-structured, and
• the case is communicated professionally.

Many suppliers evaluate not only the legal position itself, but also the broader business relationship, reputational considerations, and future cooperation.

This is not a substitute for disciplined limitation management. However, it is a strong argument against prematurely writing off older cases. Organizations regularly lose recoverable funds because historical overpayments are considered commercially irrelevant without any structured assessment.

At the same time, goodwill should never be relied upon as a strategy. Companies that want to act professionally need a clear prioritization framework based on claim value, case age, documentation quality, and limitation status. This is precisely where experience creates value. Averdes combines data-driven analysis with operational follow-up to ensure that overpayment cases are not only identified, but also pursued in a structured and commercially effective manner.

For years, consulting firms and recovery audit specialists have consistently emphasized the same success factors:

• clean and reliable master data,
• systematic vendor statement reconciliations,
• plausibility checks within invoice processing,
• consistent root-cause analysis, and
• a stable control environment across the procure-to-pay process.

These findings are fully in line with our project experience.

E. Where We Can Provide Concrete Support

For many organizations, limitation periods are seen primarily as a legal side issue. For us, they are an operational factor within the recovery process. Having worked with more than 450 clients across over 900 projects, we know that speed, documentation quality, and professional communication are often decisive for successful recoveries.

It is not enough to understand the legal framework alone. Organizations also need to know how overpayments can be reliably identified, properly documented, and professionally recovered in collaboration with suppliers. This is exactly where our strength lies: we combine audit expertise with deep operational knowledge of Accounts Payable and the procure-to-pay process.

This is exactly where our strength lies: we combine audit expertise with deep operational knowledge of Accounts Payable and the procure-to-pay process. The result is an approach that combines short-term financial recovery with long-term process improvement. A well-managed recovery audit restores liquidity — while a strong follow-up initiative helps prevent the same errors from recurring.

This model is particularly attractive for organizations seeking fast results but lacking internal capacity. Our fee structure is success-based. In other words, we only succeed when measurable recoveries are achieved for your organization. This allows companies to launch projects that are financially meaningful, but often remain postponed due to operational workload and competing priorities.

Conclusion

Overpayments should neither be underestimated nor postponed. In Germany, such claims are often subject to a standard three-year limitation period beginning at the end of the calendar year. In practice, however, the decisive factors are early identification, proper documentation, and consistent follow-up. Organizations that also address the underlying weaknesses within the procure-to-pay process not only protect past payments, but also strengthen the future stability of their liquidity and control environment. This is precisely where Averdes has been supporting companies across Europe and North America for many years — with deep expertise, extensive project experience, and a clear focus on measurable results.

Download_Merkblatt zur Verjährung von Überzahlungen              Download_Guide_Limitation Periods for Overpayments

Download_Averdes Musterbrief zur Rückforderung einer Überzahlung Download_Averdes_Template_Recovery_of_Overpayment

Do you have further questions? Learn more about our Overpayment Check HERE .

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