How is the Statute of Limitations Calculated for Interest Receivables? (2026)

Statute of limitations for interest receivables is one of the most confusing issues in practice. The main reason for this is that "interest" does not refer to a single type of receivable. Sometimes it is contractual interest, sometimes default interest, and sometimes ancillary interest claim dependent on the principal debt. The Turkish Code of Obligations regulates both the rate and the statute of limitations system separately for interest. According to the law, if the annual rate to be applied to the interest payment obligation is not agreed upon in the contract, it is determined according to the legislation in force on the date the interest obligation arose; the same logic applies to default interest. In addition, the maximum limits that can be agreed upon in the contract are also specified in the law.

However, the crucial question in calculating the statute of limitations is the legal nature of the interest claim . Article 147 of the Turkish Code of Obligations stipulates a five-year statute of limitations for principal interest and other periodic payments . In contrast, Article 146 states that, unless otherwise specifically provided, every claim is subject to a ten-year statute of limitations . There is also Article 152: When the principal claim becomes time-barred, the interest and other claims related to it also become time-barred. Therefore, when calculating the statute of limitations for interest claims, a single formula is not sufficient; a distinction must be made between whether it is an independent interest claim, interest linked to the principal claim, or periodic interest.

What is interest receivable?

Legally, interest is an additional monetary debt arising from the use or late payment of a monetary debt. Article 88 of the Turkish Code of Obligations refers to the "obligation to pay interest," while Article 120 refers to "default interest." This distinction is important because there may be a contractual interest rate agreed upon in advance between the parties; if the debtor fails to pay the debt on time, default interest may also accrue. The law also regulates the determination of interest rates and the limits that can be exceeded by contract.

This is why calculating the statute of limitations for interest receivables becomes difficult. A debt file may simultaneously contain principal, accrued contractual interest, default interest, and interest that will accrue after collection. Treating all of these as a single item leads to serious errors. Because sometimes interest is a periodic receivable in itself; and sometimes it is an ancillary item closely tied to the principal. The Turkish Code of Obligations system takes this distinction into account.

What is the basic statute of limitations period for interest receivables?

The most basic rule is this: Principal interest is subject to a five-year statute of limitations. This conclusion is directly derived from Article 147 of the Turkish Code of Obligations. The article explicitly states that a five-year statute of limitations applies to rent payments, principal interest, and other periodic payments such as wages. Therefore, if the interest claim is asserted independently and periodically, the primary applicable period is five years.

However, it is important to immediately make the following warning: Not every interest claim can be automatically closed with a "five-year" statute of limitations. Because Article 152 states that when the principal debt becomes time-barred, the interest related to it also becomes time-barred. In other words, while a separate five-year calculation is made for interest claims in some cases, in others, the statute of limitations on the principal debt affects all ancillary claims together. Therefore, for an accurate calculation, it must first be examined whether the interest an independent periodic claim or an ancillary right attached to the principal debt .

When does the statute of limitations begin to run?

According to Article 149 of the Turkish Code of Obligations, the statute of limitations from the date the debt becomes due . If the due date is contingent upon notification, the period starts from the date on which that notification can be made. This rule also applies to interest claims. In other words, the statute of limitations for interest does not begin abstractly on the date the contract is concluded, but on the date the relevant interest claim becomes payable.

A crucial distinction emerges in practice here. The principal debt may be due, but the date on which the interest claim arises may be different. Especially with default interest, the moment the debtor defaults is decisive. Article 117 of the Turkish Code of Obligations regulates the debtor's default, and Article 120 regulates default interest. Therefore, the question "From what date did the interest claim begin to accrue?" is the first step in correctly determining the start of the statute of limitations.

Do contractual interest and default interest have the same statute of limitations?

Although often considered the same in practice, their calculation logic is not identical. Contractual interestis the interest agreed upon by the parties in a contract; Article 88 of the Turkish Code of Obligations outlines its basic framework. Default interest, on the other hand, arises from the non-payment of a debt on its due date and is regulated in Article 120. Furthermore, Article 121 states that a debtor who defaults on paying interest or annuity is obligated to pay default interest from the date enforcement proceedings are initiated or a lawsuit is filed. The same article also explicitly stipulates that default interest cannot be charged on default interest.

Regarding the statute of limitations, the common point is this: If the interest claim is asserted as an independent, periodic claim, then, according to Article 147 of the Turkish Code of Obligations, a five-year period generally applies. However, if the interest is asserted as an ancillary claim dependent on the principal debt, then the dependent claim system in Article 152 comes into play. Therefore, the question of "is it contractual interest or default interest?" is as crucial as the question of "is the interest a separate claim here, or an ancillary claim to the principal?".

What happens to the interest if the principal debt becomes time-barred?

The law is extremely clear on this matter. According to Article 152 of the Turkish Code of Obligations, when the principal debt becomes time-barred, the interest and other related claims also become time-barred. This provision is one of the most critical articles regarding interest claims. Because many people think that "even if the principal can no longer be claimed, the interest can still be claimed." However, the law does not consider the related interest claim as an independent and perpetual right separate from the principal claim.

Therefore, if, for example, the statute of limitations has expired for a monetary debt, claims for accrued interest on that debt generally suffer the same fate. Of course, whether the interest is claimed independently in the specific case, the relationship between the parties, and previous transactions should be examined separately. However, in terms of the general system, the extinguishment of the principal debt also affects ancillary interest items. This sets limits on the approach frequently encountered in enforcement cases, such as "the principal is time-barred, but I still want the interest.".

How is the calculation done for periodic interest receivables?

The Turkish Code of Obligations establishes a specific logic for periodic obligations. While Article 147 sets a five-year period for principal interest, Article 150 states that for lifetime income and similar periodic obligations, the statute of limitations for the entire claim begins to run from the date the first unfulfilled periodic obligation becomes due; if the entire claim is time-barred, the unfulfilled periodic obligations are also time-barred. Although the word "interest" is not explicitly mentioned in Article 150, it is important for understanding the law's logic regarding periodic receivables.

In practice, interest accrual is often a daily, monthly, or yearly item. Therefore, when calculating, it's necessary to consider not just a single date, but the periods covered by the interest claim. While a statute of limitations objection may be raised for accrued interest periods older than five years, claims for more recent periods may continue. However, if the principal debt has expired due to the statute of limitations, claims for ancillary interest are also affected under Article 152. In short, the time calculation in interest cases must be done item by item.

How is the statute of limitations calculated?

Article 151 of the Turkish Code of Obligations provides the basic formula on this matter: When calculating time limits, the day the limitation period begins is not counted; the limitation period only expires if the right is not exercised on the last day of the period. This provision is very important for deadlines. Because sometimes an interest claim is brought to court or pursue legal action precisely at the end of the time limit, and even a one-day calculation error can affect the outcome.

For example, if an interest receivable became due on July 1, 2020, the starting date is not taken into account; the end of the five-year period is determined by general time calculation rules, and if the right is not exercised by this last day, the statute of limitations expires. Therefore, especially in enforcement proceedings and court petitions, the interest commencement date and the statute of limitations period should not be used arbitrarily in the same sentence. When making calculations, the reasons for commencement, termination, interruption, and suspension should be considered together.

Under what circumstances is the statute of limitations suspended or interrupted?

When calculating the statute of limitations for interest receivables, it is not enough to only consider the duration; it is also necessary to examine whether the duration has been suspended or interrupted . Article 153 of the Turkish Code of Obligations regulates that in certain special cases, the statute of limitations will not begin to run or will be deemed suspended. For example, the duration of the limitation period does not run in claims between spouses as long as the marriage continues, or in certain guardianship and service relationships. Although these do not arise in every case, they can affect interest in exceptional circumstances.

The more widely significant provision is Article 154. According to this article, the statute of limitations is interrupted if the debtor has acknowledged the debt, especially if they have paid interest or made partial payment, provided collateral or a guarantor; furthermore, if the creditor has filed a lawsuit, raised a defense, initiated enforcement proceedings , or applied to the bankruptcy estate. With the interruption of the statute of limitations, a new period begins to run; if the debt has been acknowledged by a promissory note or established by a court or arbitration decision, the new period is always ten years. This rule is extremely important for interest claims, because a single partial interest payment or enforcement action can change the entire calculation.

What should a debtor do if enforcement proceedings are initiated to collect interest?

If a debtor receives a payment order that includes only interest or demands both the principal and accrued interest, the first step is to separate the interest items. Questions such as which period the interest relates to, whether it's contractual interest or default interest, whether the principal debt is still outstanding, whether the five-year period has expired, and whether there was any action that interrupted the statute of limitations must be answered. This is because the statute of limitations is not a defense automatically considered by the court or enforcement authority unless raised by the debtor. The Turkish Code of Obligations explicitly recognizes this.

Therefore, if the interest receivable appears to be time-barred, it is necessary to object to the payment order within the prescribed time limit or to explicitly raise the defense of statute of limitations in the lawsuit. Especially in old bank debts, commercial current accounts, rent, and compensation cases, the accrued interest item often becomes more complex than the principal debt. If the debtor says, "I accept the principal but a portion of the interest is time-barred," they must establish this not abstractly, but by specifying the period and amount. This makes the defense both technical and verifiable.

What are the most common mistakes?

The most common mistake in calculating interest is assuming that all interest charges are calculated from a single date. However, the maturity date can vary depending on the type of interest. A second major mistake is believing that interest continues to exist independently once the principal debt has become time-barred; Article 152 explicitly prohibits this. A third mistake is overlooking the fact that a small interest payment by the debtor or enforcement proceedings initiated by the creditor can interrupt the statute of limitations. Article 154 specifically lists interest payments as a reason for interrupting the statute of limitations.

Another mistake is assuming that default interest can be charged on top of default interest. Article 121 of the Turkish Code of Obligations clearly states that default interest shall be paid from the date of enforcement proceedings or lawsuit against a debtor who defaults on interest payments; however, default interest cannot be charged on top of default interest . Therefore, especially in enforcement calculations, the logic of "interest on interest" should be avoided.

Conclusion

When calculating the statute of limitations for interest receivables, a single, memorized formula is insufficient. According to the Turkish Code of Obligations, principal interest is generally subject to a five-year statute of limitations; the limitation period begins upon maturity ; the starting date is not taken into account; when the principal debt becomes time-barred, the accrued interest also lapses ; however, interest payments, partial performance, lawsuits, or enforcement proceedings can interrupt the statute of limitations and initiate a new period.

In short, the following sequence should be followed for accurate calculation: First, the type of interest is determined; then, the maturity date is established; then, a five-year period or a period appropriate to the specific case is applied; then, the reasons for suspension and interruption are examined; and finally, the status of the principal debt is checked. Errors in interest receivables often stem not from the amount itself, but from incorrect legal classification. Therefore, especially in enforcement and litigation files, it is necessary to read the interest items separately and to construct the statute of limitations defense accordingly.