Foreign-Currency Debts in Turkey: Proof, Exchange Rates and Partial Payments

Does a foreign-currency transfer prove a repayable debt?

No. A bank transfer must be connected to the obligation relied on. Article 99 of the Turkish Code of Obligations distinguishes foreign-currency denomination, agreed payment in that currency and the alternatives following non-payment. Article 117 addresses default, while Articles 100–102 concern allocation of payments. Those rules do not replace proof that a debt arose, became payable and remains outstanding.

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For English communication and representation, visit our English legal services homepage. This guide addresses a defined legal issue; it does not determine an individual case or guarantee recovery.

Key distinctions

A foreign-currency transfer is not the same as a proved debt

Proving a foreign-currency debt in Turkey requires more than showing that money moved from one bank account to another. A transfer may represent a loan, purchase price, capital contribution, gift, reimbursement or payment made for somebody else. The creditor needs a coherent explanation of the obligation relied on and the evidence connecting the transfer to that obligation. The currency shown on a bank receipt answers only one part of the enquiry.

Begin with the parties, the legal basis, the agreed amount and the event that made payment due. Then distinguish the contractual currency from the currency in which a payment was actually processed or recorded. Cross-border banking can involve conversion, intermediary charges and amounts credited on different dates. This guide concerns evidence and calculation for a possible debt claim. It does not assume that every foreign-currency agreement is unrestricted, that one exchange date applies to all claims or that the same interest rate governs every civil and commercial relationship.

Identify the legal creditor and debtor accurately

The person who supplied funds is not necessarily the only person who may assert the contractual claim, and the account receiving funds is not necessarily the contracting debtor. A company director may make a payment on a company’s behalf, an individual may lend through a joint account, or a recipient may act as an authorised collection agent. Establish the legal relationship instead of allowing the bank-account names alone to determine the parties.

Gather the contract, company information where relevant, payment instructions and any acknowledgement explaining whose obligation was being performed. Where a claim has been assigned, inherited or transferred through another legal event, the supporting chain needs its own review. Do not combine debts owed by a company and an individual merely because they share an address or manager. Correct party identification affects a demand, procedural strategy and recoverability. It also prevents an overseas claimant from spending time on a well-organised payment schedule that is attached to the wrong legal person or an incomplete account of how the right arose.

Describe the underlying transaction before discussing currency

Set out what each party promised. For a loan, identify the alleged agreement to repay and its terms. For goods or services, connect the debt to the order, delivery or performance relied on. For reimbursement, explain why the recipient was obliged to repay the particular expenditure. The fact that an invoice is denominated in euros or dollars does not eliminate the need to establish the transaction and address any relevant defence.

Preserve the complete negotiation and performance record. An acknowledgement of receipt, an accepted delivery note or a message agreeing a balance may have a different evidential role from an unaccepted draft invoice. Do not assume that every communication has the same legal effect. Where the debtor alleges a gift, investment or failed condition, identify the contemporaneous documents that support or contradict that account. This transaction-first approach produces a more useful legal assessment than beginning with exchange-rate arithmetic and only later discovering that the parties disagree about whether repayment was ever promised.

Distinguish the currency of account from the payment obligation

A document may use a foreign currency to express value without resolving every question about how payment must be made. Review the wording on denomination, permitted payment currency, conversion and any exchange-rate mechanism. Identify whether later messages amended those terms and whether the parties actually accepted the change. A payment request generated from accounting software should not automatically be treated as a contractual variation.

Record the original amount and currency without converting them away in the working file. Where the claimant also prepares a Turkish-lira equivalent for discussion, label the calculation and its purpose. An illustrative equivalent is not necessarily the amount that should be demanded or pursued under the applicable rules. The relevant statutory framework, including foreign-currency performance rules in the Turkish Code of Obligations and any applicable restrictions, needs review for the transaction. The objective is to preserve the underlying obligation accurately while leaving the legal selection of currency and conversion basis visible rather than hidden inside a spreadsheet formula.

Article 99 permits payment in Turkish currency at the payment-day current rate where foreign-currency payment was agreed without an effective-payment clause or equivalent wording. For the foreign-currency debt described in its third paragraph, non-payment gives the creditor the stated choices of the currency itself or Turkish currency at the maturity-day or actual-payment-day current rate. Identify which statutory situation and contractual wording applies before making a procedural election.

Check whether mandatory currency rules affect the transaction

Some transactions require a separate assessment of mandatory rules governing foreign-currency denomination or payment. The relevant analysis can depend on the parties’ status, residence, transaction type and any applicable exception. Neither a foreign passport nor the use of an overseas bank account should be treated as a universal exemption. Likewise, the fact that another business uses euro invoices does not establish that the same arrangement is appropriate for this contract.

Provide the reviewing lawyer with the complete party and transaction information, including any relevant employment, property, service or commercial context. Current regulations and official guidance should be checked before advice is given about enforceability or the form of a demand. This guide does not provide an exhaustive list of permitted agreements or exceptions. The practical point is to identify the issue early: a careful payment history cannot cure an analysis that ignores a mandatory rule potentially affecting the obligation. Any required restructuring of the claim should be legally assessed rather than achieved by relabelling old documents.

Build a payment trail that survives bank conversion

Keep the originating instruction, transfer confirmation and evidence of the amount actually credited when available. Record transaction references, dates, sender, beneficiary, currency and fees. A screenshot showing an instruction as pending does not prove final receipt. Where a payment was returned, recalled or partly credited, include that event in the chronology rather than counting the initial instruction as completed performance.

Cross-border transfers may produce several documents describing the same movement. Match them through references and dates to avoid counting the payment twice. Where the bank converted the money, preserve both the amount sent and the amount received, together with the available conversion information. Do not invent a bank rate from a public exchange-rate table when the actual transaction document shows a different mechanism. The legal effect of fees and any shortfall depends on the agreement and applicable rules, but the factual record should make those issues identifiable. A complete trail helps distinguish non-payment from an unresolved dispute about conversion, charges or allocation.

Establish when payment became due and what remained conditional

A repayment date, invoice date and date of demand are not automatically interchangeable. Identify the event that made the obligation payable under the agreement and relevant law. It may be a specified date, delivery, acceptance, a request or another condition requiring legal interpretation. Preserve evidence that any necessary contractual condition occurred, as well as a genuine dispute about whether it occurred.

If the parties agreed an extension or instalment arrangement, record the exact wording and affected amounts. A promise to pay soon may need interpretation in context rather than being inserted into the schedule as a definite revised deadline. Distinguish the question of maturity from default, interest and procedural time limits. Those issues may interact but should not be collapsed into a single date without analysis. For an overseas creditor, a timeline that separates original obligation, agreed changes, demands and payments provides a better basis for advice than a summary saying only that the debtor has been avoiding payment for a long time.

Article 117 generally links default on a due debt to notice, while identifying circumstances in which default follows without that further notice, including an agreed performance day passing. Therefore, maturity and the interest starting point should not be collapsed into the invoice date automatically. Preserve the agreement and delivery of any required notice.

Account for partial payments and their allocation

List every payment potentially relevant to the debt, including amounts received by an authorised third party and payments made after the dispute began. Identify any instructions about allocation to principal, interest, costs or a particular invoice. The legal treatment of an allocation requires review; the factual file should preserve the parties’ words and the payment details rather than assuming that every receipt reduced the same balance in the same way.

Where several debts exist between the parties, avoid selecting the allocation that produces the largest claim without explaining the basis. Keep credits, returns, agreed discounts and set-off allegations visible in separate entries. A disputed deduction need not be accepted, but it should not disappear from the record. If currencies differ across instalments, retain the original amounts and identify the conversion approach used for each proposed balance. This makes alternative calculations possible and allows the lawyer to distinguish an arithmetic disagreement from a legal dispute about which obligation was discharged.

Articles 100–102 distinguish allocation within an obligation from allocation among several debts. A debtor’s designation and the creditor’s receipt can matter; statutory rules address the absence of a legally effective allocation. Do not apply a first-in-first-out spreadsheet rule without checking those provisions and the actual payment instructions.

Treat interest as a separate legal and mathematical question

Interest requires its own basis, start date, applicable rate and calculation method. A contract rate, a statutory rate and a rate used in a different commercial relationship should not be substituted for one another without analysis. Foreign-currency claims can raise particular issues, and current rates or official reference information must be verified when relevant. This guide does not supply a generic percentage that supposedly applies to every euro or dollar debt in Turkey.

Show principal and interest separately in the working calculation. State the period, any changes in rate, treatment of partial payments and whether the proposed method involves compounding. Do not add a bank’s transaction fee, a private collection charge or a contractual penalty to interest without identifying its separate legal basis. A clear schedule should allow another person to reproduce the arithmetic from the stated assumptions. The lawyer can then assess which assumptions are legally sustainable and whether a proposed demand needs more than one alternative calculation rather than one unsupported total.

The Central Bank’s exchange-rate publications distinguish different data categories. A published indicative rate is not proof of the actual rate a particular bank applied to a transfer. Keep contractual calculations and evidence of the banking transaction separate.

Preserve acknowledgements without overstating their effect

A debtor’s message acknowledging a balance can be important evidence, but its meaning should be read in context. Identify who sent it, their authority where a company is involved, the debt discussed and any condition or reservation. A proposed compromise made to end a dispute is not necessarily the same as an unconditional acceptance of the entire original claim. Preserve the surrounding conversation, attachments and available metadata.

Do not alter message text, crop away relevant qualifications or describe an unsigned draft settlement as a completed agreement. Where an acknowledgement is in another language, arrange a reliable translation and keep the original accessible. Any effect on time limits or procedural issues needs separate legal evaluation rather than an assumption that every promise restarts every clock. The practical value of an acknowledgement file is that it allows the reviewing lawyer to assess what was admitted, by whom and when, while also identifying the matters that remain genuinely contested.

Select the forum and recovery route after reviewing the contract

A Turkish debtor, Turkish bank account or payment made in Turkey does not independently settle every question about jurisdiction, applicable law or dispute resolution. Review any court or arbitration clause and the relevant legal framework. A consumer transaction, commercial supply contract and private loan may require different procedural analysis. The available route should be chosen after the obligation, parties and evidence have been identified.

Before commencing a formal process, assess service, translation, authority, costs and collectability. A successful determination of liability and actual recovery of money are distinct stages. Urgent protective relief, where legally available and justified, requires its own conditions and evidence; it should not be described as an automatic consequence of filing a demand. Any applicable mediation or other prerequisite should be checked under the current rules. This approach prevents the exchange-rate dispute from distracting attention from a more basic procedural issue that could affect the usefulness or timing of the entire recovery strategy.

A hypothetical example: three documents describing one payment

Assume an overseas lender instructs a euro transfer, the receiving bank credits a different currency and the borrower later acknowledges a balance in euros. These three documents do not necessarily describe three debts. They may be evidence of one transaction with a conversion in the payment chain. The analysis should connect the alleged loan agreement, the transfer and the acknowledgement, then examine what the parties agreed about the obligation and any repayment.

Now assume the borrower says that the transfer was a contribution to a joint business rather than a repayable loan. Exchange-rate calculations alone cannot resolve that disagreement. The relevant evidence may include the parties’ original messages, project documents, accounting records and subsequent conduct. This hypothetical illustration is not a prediction of a court result. It demonstrates why a foreign-currency recovery file needs both a legal explanation of the debt and a factual payment reconciliation. Accurate mathematics becomes useful only after the numbers are attached to the right obligation and supported assumptions.

For a simple illustrative reconciliation, assume an established EUR 10,000 principal and a documented EUR 2,500 payment validly allocated to principal, with no other credits or deductions. The remaining principal is EUR 7,500. That arithmetic does not select an exchange date, establish the interest due or prove that the original EUR 10,000 was a loan rather than an investment. Those are separate legal and evidential questions.

Prepare an English decision file for nationwide coordination

An initial file should contain a concise transaction summary, the agreement, invoices or performance records, payment documents, communications about the balance and a proposed calculation with assumptions disclosed. Identify urgent dates and any earlier proceedings or settlement proposals. Keep passwords, unrelated account transactions and unnecessary identity information out of the initial bundle. The lawyer can request additional material through an appropriate channel when its relevance is established.

The practice is Mersin-based, with physical offices in Mersin and Istanbul, and coordinates matters throughout Turkey subject to the competent institutions and procedural requirements. English reporting should distinguish the principal alleged, the principal evidenced, disputed adjustments, interest assumptions and amounts actually recovered. It should also separate document review, a demand, formal proceedings and enforcement. That structure enables an overseas creditor to make an informed decision about cost and next steps without being told that a currency conversion or a forceful letter has already resolved the underlying debt.

Frequently asked questions

Does a euro transfer prove that the recipient borrowed euros?

No. Connect the transfer to the alleged repayment agreement. It can relate to a purchase, investment, gift or another transaction.

Can I always demand the original currency?

Review the agreement, Article 99 and mandatory currency rules. The invoice currency does not answer every question about performance or the form of a claim.

Which exchange rate should be used?

Identify the purpose and legal basis of the calculation. Keep original amounts and distinguish an illustrative equivalent from a procedural claim.

What interest percentage applies?

No universal percentage applies to every relationship. Identify the contractual or statutory basis, start date and relevant verified rate.

Should small partial payments be omitted?

No. Record and allocate them correctly. A disputed allocation is not a reason to conceal receipt.

Does a payment promise resolve all proof problems?

Not automatically. The sender, authority, debt, context and conditions matter.

Can the account holder who sent money always sue?

The legal creditor must be established. The sender may have paid for a company or another person.

Can recovery be coordinated from Mersin?

Yes, subject to authority, jurisdiction and procedure. Establishing entitlement remains distinct from actual collection.

Related English guides

Where the balance arose from disputed goods, the supplier specification guide explains examination and notice. A corporate claimant should prepare the separate company authority file. When repayment terms are negotiated, review the mediation settlement execution checklist before signing.

Debt collection and enforcement · Contract disputes · Inherited property income accounting · Renovation advances and refunds · Mediation for parties abroad

Official legal sources

Turkish Code of Obligations No. 6098; WIPO Lex enacted text, particularly Articles 99–102 and 117; and Central Bank exchange-rate publications. Turkish legislation and the actual documents govern. This is general English-language information, not an official translation.