Received a letter of claim in Finland? How to respond

Receiving a letter of claim in Finland can be unsettling, especially if it arrives from a lawyer and threatens legal proceedings. The immediate task is not to write a lengthy defence. It is to establish who sent the letter, what is being demanded and which deadline matters.

This guide concerns business disputes under Finnish law. A vaatimuskirje may demand payment, compensation or another remedy. The English label “letter of claim” does not import another country’s pre-action procedure into a Finnish dispute.

First, identify the document and the deadline

The heading alone is not enough. Read the sender’s details, the demand and any reference to court proceedings or bankruptcy.

• Payment reminder or collection letter. Usually concerns an overdue invoice. Check whether you received the invoice, whether it is correct and whether payment has already been made. A collection agency’s involvement does not establish that a disputed claim is valid.
• A lawyer’s letter of claim. Often concerns a disputed invoice, defective work or damages for breach of contract. There is no single statutory response period for every such letter. The sender may set a deadline, while separate contractual or statutory time limits may also matter.
• A tratta. This is a payment demand backed by a threat of publication or a credit-register entry. Under section 7 of the Debt Collection Act, it may be used only for an overdue, clear and undisputed debt, and not for consumer debt. If the claim is disputed, communicate the grounds promptly in writing. Do not assume that a particular business form is automatically exempt.
• A payment demand threatening bankruptcy. Act urgently. For a qualifying debtor with accounting obligations, failure to pay a clear, overdue debt within one week of receiving a properly served demand can create a rebuttable presumption of insolvency. Other statutory conditions also apply; the letter does not itself make the business bankrupt.
• A summons from a district court. This is no longer just correspondence from the other party. Follow the court’s response instructions and deadline. Failure to respond can lead to a default judgment, which is immediately enforceable.

If you need more time, ask early and keep written confirmation of any agreed extension. A request alone does not extend a deadline. In particular, the opposing party cannot grant an extension to a court’s deadline on the court’s behalf.

What legal effect does a demand letter have?

A demand letter is not an enforceable judgment and does not prove the sender’s case. Equally, it does not suspend a valid payment obligation. Its effects depend on the claim and the surrounding facts.

Limitation. A sufficiently identified demand or reminder received by the debtor can interrupt a running limitation period. A new period then begins under the applicable rules. It is not always three years, and a new demand does not by itself revive an already time-barred debt.

Late-payment interest. A demand can be relevant to when interest starts. Where no binding due date has been fixed in advance, the Interest Act generally provides for interest after 30 days from dispatch of the invoice or demand, but not for a period before it reaches the debtor. Damages requiring investigation have separate requirements: the claimant must provide the reasonably necessary information about the basis and amount of the claim.

Litigation costs. Giving the other party a genuine opportunity to resolve the matter can affect the later costs assessment. Under Chapter 21, section 4 of the Code of Judicial Procedure, even a successful party may face adverse costs consequences for unnecessary proceedings. Sending a letter, or disputing one, does not guarantee a particular costs outcome.

Check limitation before acknowledging an old claim

The general limitation period is three years, often calculated from an agreed due date. That is only the starting point. Damages claims have their own rules on when time begins to run; special periods and ultimate time limits may apply. After a final judgment, the renewable limitation period is generally five years.

Review earlier reminders, correspondence, payments and acknowledgements. In KKO 2019:88, a construction customer’s sufficiently specific demand to repair defects interrupted limitation of the related damages claim. A letter need not use a particular legal formula, but a vague expression of dissatisfaction may be insufficient.

Also check correspondence handled through an insurer or representative. In KKO 2026:40, the insurer’s authority to act for the liable party was important to interruption. That does not mean every communication with any insurer has the same effect.

If you rely on limitation, say so expressly and explain the relevant dates. Do not assume the court will raise it for you. Avoid a casual acknowledgement or part-payment before checking the position: these may interrupt a running period. A business also cannot normally recover a payment merely because it later discovers that the debt was already time-barred.

How to respond to a letter of claim in Finland

1. Record the deadline and appoint one person to coordinate the response. Preserve the letter, attachments and evidence of when it arrived. Make sure sales staff or project managers do not send inconsistent replies.
2. Collect the relevant documents. Start with the contract and applicable terms, orders, invoices, delivery records and earlier complaints. Preserve relevant messages and original files.
3. Ask for what is missing. Request the contractual or other legal basis, an itemised calculation and supporting evidence. A damages demand should explain the alleged breach, loss and connection between them. A request for information is not itself an extension of time.
4. State your position clearly. Identify the demand and distinguish what you accept from what you dispute. Explain the factual and contractual grounds without speculation or unnecessary admissions.
5. Set out a practical next step. This might be payment of an agreed amount, exchange of documents, inspection of the disputed work or settlement discussions. Make clear whether a proposal is intended to resolve the whole dispute or only part of it.
6. Keep the response and proof of sending. Use an appropriate, verifiable channel and check the recipient. If the matter is already in court, a reply to the claimant is not a substitute for the required response to the court.

A bare “we dispute everything” is rarely useful. A focused explanation is better: which invoice item, alleged defect or calculation is disputed, and why? You do not need to fill gaps in the other party’s evidence for them, but your own position should be accurate and consistent with the records.

For an ordinary private-law debt, voluntary collection generally must stop when the debtor disputes liability on relevant grounds. A dispute without reasons, or on a ground clearly unrelated to liability, does not necessarily stop collection. Nor does a reasoned dispute prevent the creditor from asking a court to decide the claim.

Interest, collection charges and the cost of a dispute

For 1 July–31 December 2026, the statutory annual late-payment rate is 9.5%, or 10.5% for payments within the commercial-payment rules. Not every business damages claim falls into the latter category. An applicable contractual interest provision may also affect the calculation. Check the rate for each period rather than using the current rate for the entire delay.

Finnish law caps charges for specified business-debt collection measures and sets limits on total collection costs, subject to defined exceptions. For example, the maximum charge for a written reminder of a non-consumer debt is €12. A larger total demand is not necessarily justified merely because a collection agency has issued it.

For qualifying late commercial payments, the creditor may be entitled to a €40 fixed recovery charge once the conditions for late-payment interest are met. Other recoverable collection costs can be claimed only to the extent that they exceed that fixed charge. It should not be counted twice.

These collection-cost rules are not a cap on every possible litigation expense. Before escalating, compare the amount at stake, the evidence, likely legal costs and the risk of paying the other side’s costs. Check any relevant legal expenses or liability insurance promptly; cover, notification requirements and insurer consent depend on the policy.

When to pay, negotiate or seek help

If the debt is valid and undisputed, payment or an agreed payment plan may avoid unnecessary expense. If only part is accepted, define that part carefully and explain how any payment should be allocated. If you settle, record exactly which claims the settlement resolves, including interest and costs.

Get advice promptly where the amount is significant for your business, the facts or contract are unclear, or the document threatens bankruptcy or comes from a court. I help businesses assess demands, prepare responses and conduct negotiations. The scope and price of any work are agreed before it begins; see my dispute-resolution services.

For the underlying remedies, read the guide to breach of contract in Finland. If your business is the creditor, the business debt-collection guide explains the steps before litigation. Clear B2B terms and conditions can also reduce uncertainty about payment and complaints in future transactions.

Information checked: 24 October 2026. This guide provides general information and is not a substitute for advice on your specific situation.