In Switzerland, an invoice does not automatically become statute-barred after 3 years. For most contractual claims the period is 10 years under Art. 130 OR, for periodic claims such as rent, interest and many recurring services it is 5 years under Art. 128 OR, and the clock generally starts running at maturity (due date), not on the invoice date.

That is exactly where many freelancers run into trouble in practice, in the middle of everyday life between project completion, quotes, reminders and bookkeeping. An invoice goes out, the client doesn't respond, and suddenly it's not just liquidity at stake, but also the question of whether the money can still be collected cleanly in legal terms.

Why the question of limitation periods affects every freelancer

An unpaid invoice is never just a bookkeeping entry for the self-employed. It blocks cash flow, costs follow-up effort, and becomes harder to explain with every passing month when you later search for receipts or want to reconstruct internally what was actually agreed. That is precisely why the question of when an invoice becomes statute-barred in Switzerland is not a lawyers' topic, but an everyday problem.

The most common misconception

Many people assume a rigid 3-year period. That doesn't fit Switzerland, though. The basic rule in the Code of Obligations is 10 years for claims for which no special law provides otherwise, and for periodic claims the 5-year period often applies. The difference is central for freelancers, because a classic fee invoice is often treated differently from a recurring service such as a retainer or rental income. The legal logic is clearly described in practice in the guide to limitation periods in Switzerland.

Practical rule: It is not the date on the invoice that matters, but the moment the claim falls due.

Anyone who overlooks this often misjudges old claims. An invoice can have been sitting in the folder for a long time and still be enforceable, or it can become critical earlier than expected in the case of a periodic claim. For freelancers, this means you need a clean due date on every invoice, not just a pretty PDF.

What this means for your everyday work

If you work as a designer, developer or consultant, you often invoice at the end of a project or at regular intervals. That is exactly when a clean separation between invoice date, service date and due date pays off. Without these dates you will later be searching in the fog, and the fog does not get thinner over time.

So the question is not just whether an invoice is old. The right question is when exactly the claim fell due and which period applies to it. Anyone who documents this consistently has much better cards in a dispute and doesn't waste unnecessary time on follow-up questions that proper invoicing would have avoided.

The two basic periods in the Swiss Code of Obligations

Swiss practice can be broken down into two pillars. Art. 130 OR sets the regular limitation period at 10 years for contractual claims, such as works contracts, purchase contracts and classic service invoices. Art. 128 OR shortens the period to 5 years for periodic claims, i.e. for services billed on a recurring basis, for example rent, interest or certain services.

Maturity beats the invoice date

The clock generally starts running when the claim falls due. That is the point at which your client must pay, not necessarily the day you sent the invoice. That is precisely why a missing or imprecise payment deadline is a real problem in practice, because you later have a harder time properly substantiating the start of the period.

For freelancers this is especially relevant for engagements that are billed not once, but on a recurring basis. A retainer, monthly maintenance or ongoing consulting hours may fall under the 5-year period, while a clearly delimited engagement tends to fall under the 10-year period. The distinction is not cosmetic — it determines how you classify an open invoice in the first place.

Important for bookkeeping: Anyone who does not consistently record the due date makes the burden of proof harder for themselves later.

What counts in mixed cases

Especially with freelancers, the boundaries blur. A website subscription can contain elements of a recurring service; a project with ongoing support can be partly one-off, partly periodic. In such cases, gut feeling doesn't help — only clean documentation of the service and the payment agreement does.

Anyone who writes invoices with software should therefore not just record the amount. What makes sense above all is the service date, the due date, a clear description of the service and the assignment to the correct claim type. Otherwise a clean invoice later turns into a file full of gaps, and it is exactly those gaps that are expensive in a dispute.

Special periods for certain types of invoices

In addition to the two basic periods, Swiss practice has a few special cases that become relevant faster than many freelancers think. What matters is not the professional title of the creditor, but the type of claim. Anyone who classifies this correctly avoids false assumptions about older open items.

Why the certificate of loss matters so much

The 20 years for certificates of loss show that a claim is not automatically settled even after a long time has passed if a certificate of loss has already been issued. This is relevant for freelancers above all when debt enforcement proceedings have already taken place and the debtor has not paid. In that case, the normal logic of 5 or 10 years simply does not apply.

How to recognise the type of period in everyday life

In practice, the question is simple. If it is a recurring service, for example monthly support or an ongoing subscription, you first look towards 5 years. If it is a normal contractual claim for a clearly delimited engagement, the 10-year period is often decisive. In special cases such as certificates of loss, the special rule applies.

Rule of thumb from everyday fiduciary practice: As soon as you are no longer sure whether the claim is periodic or one-off, check the contractual basis and not just the invoice itself.

With four-year-old invoices, you therefore cannot simply say they are statute-barred. The running of the period depends on the type of claim, and it is exactly this distinction that decides the next step in Switzerland.

Three examples from the everyday life of the self-employed

Case 1, the web designer with the July invoice

A web designer issues an invoice in July 2021 with a 30-day payment term. The client doesn't pay, and in 2026 she wants to know whether the claim is still alive. What counts first here is maturity, i.e. the point from which payment was owed. Depending on how the service is classified, the claim can become statute-barred at the earliest after 5 years or only after 10 years.

The mistake in such cases is usually banal. People only look at the invoice date, even though the agreed payment term is actually decisive. Anyone who invoiced in July 2021 but only triggered maturity in August 2021 shifts the relevant starting point accordingly.

Case 2, the IT consultant with the monthly retainer

An IT consultant issues an invoice every month for ongoing support, but without a clear due date. After three years, uncertainty arises. With such retainers, the service is typically recurring, so the period does not automatically have to be treated as with a one-off project. The problem here is less the age of the invoice than the sloppy documentation of maturity.

If the due date is missing, enforcement becomes tedious. The client can more easily claim the invoice is unclear, and you lose time on proof instead of collection. That is exactly why a clear payment term belongs on every periodic invoice.

Case 3, the graphic designer with the acknowledgement of debt

A graphic designer has an open claim from a larger engagement. She sends a reminder, and the client confirms the outstanding balance in writing. That is important, because an acknowledgement of debt can newly influence the running of the limitation period. In practice, such confirmations are often more valuable than another reminder without a clear statement from the debtor.

A written confirmation is much stronger in a dispute than a friendly reminder without substance.

Anyone additionally considering debt enforcement proceedings should document the process cleanly and not simply let the matter rest. More on the practical side of debt enforcement can be found in the overview of debt enforcement in Switzerland. For freelancers, the core is always the same: bringing deadlines, written form and traceable documents together.

How to extend or interrupt the limitation period

The limitation period does not simply run silently in the background while you do nothing. You can influence it with certain steps, but only if you act cleanly and in good time. In practice, it is mainly about reminders, acknowledgements of debt and debt enforcement.

What a reminder must achieve

A mere payment reminder is often legally too soft. If you really want to secure the claim, you need a clear, formal reminder with an unambiguous demand and a new payment deadline. The text must be written so that it is clear what is outstanding and by when it must be paid.

Documentation is important. A reminder without proof remains, in a serious case, a piece of paper without evidentiary value. Anyone using invoicing software should therefore file reminders with the date, outstanding amount and dispatch log cleanly.

Acknowledgement of debt and settlement

Particularly effective is a written acknowledgement of debt. This can be a confirmation of the outstanding balance, a new payment agreement or a settlement in which the client acknowledges the claim in principle. Such texts are valuable in practice because they significantly strengthen the creditor's position.

This is also a good point to keep the distinction between a mini-job and self-employment in mind, because in genuine freelancer constellations it is about independent claims, not a wage-like arrangement. Anyone looking for a clear comparison will find a useful classification under differences between mini-job and freelancer.

Debt enforcement and certificate of loss

If reminders and written clarification are not enough, debt enforcement remains. It costs nerves and involves effort, but sometimes that is exactly the step needed to move a stuck claim. If the proceedings end with a certificate of loss, the 20-year period subsequently applies in Switzerland.

For freelancers, the point is not to initiate enforcement immediately every time. The point is to decide early when a claim no longer just needs to be administered, but actively secured. Anyone who waits too long risks not only the deadline, but also the evidentiary value of the documents.

What the invoice must contain to hold up in an emergency

An invoice is not just a payment request. It is a receipt with which you must later show what you delivered, when you delivered it and when the claim fell due. That is exactly why the invoice is so important in practice for later enforcement.

The details you should not leave out

In practice, every clean Swiss invoice should contain at least these points:

• Name and address of the invoicer, so it is clear who is claiming.
• Name and address of the recipient, so the counterparty is unambiguously assigned.
• Invoice date and invoice number, so the invoice remains traceable.
• Quantity and description of the service, so the content does not sink into dispute.
• Amount and VAT, so the claim is financially clear.
• Due date, so maturity remains provable later.

Anyone who works this way reduces follow-up questions and creates a clear trail in case an invoice is not paid. That is not a formality, but the foundation for being able to explain your claim cleanly later.

What invoicing software should do for you

Modern invoicing software helps above all where manual work quickly leads to mistakes. It keeps invoice numbers consistent, fills in the due date automatically, documents reminders and ensures that the same data matches across invoice, reminder and bookkeeping. Exactly this consistency is important when a claim is later reviewed.

One practical example is Magic Heidi. The software offers Swiss QR invoices, recurring invoices and clean receipt filing, which is especially useful for freelancers who don't want to gather their documents manually every month. What matters is not the interface, but that the data is correct later.

When invoice, reminder and bookkeeping carry the same key data, the claim becomes much easier to trace in a dispute.

Checklist and next steps for your claims

First check which period applies to your claim. One-off contractual claims often run differently from recurring services, and that is exactly why you must not blindly assume a single rule. Then put a concrete payment term on every invoice so that maturity is clearly documented.

A simple routine helps in everyday life:

• Check the type of period: Classify the claim as periodic, contractual or special case.
• Set the payment term: Always write the due date on the invoice.
• Watch open items: Don't wait months before following up.
• Send a formal reminder: React when payment fails to arrive.
• Put it in writing: Every acknowledgement of debt belongs in a clean filing.
• Consider enforcement early: Actively decide whether the next step is worthwhile.

If you really need to secure a claim, it is worth looking at the competent cantonal debt enforcement and bankruptcy office or at reputable legal advice in Switzerland. Especially with older invoices, that is often more sensible than continuing to hope the client will eventually pay on their own.

Anyone who records their data cleanly today doesn't have to puzzle later over whether an invoice is statute-barred or not. That is exactly what makes the difference in a freelancer's everyday life between a well-managed receivables portfolio and open items that quietly disappear.

If you want to keep invoices, due dates and reminders under control without chaos, take a look at Magic Heidi. There you can record invoices for Swiss clients cleanly and document the most important data so that it can be found again later. For freelancers who don't want to reassemble the same deadlines every month, that's a pragmatic path.