BAĞ-KUR provides covered individuals with benefits such as old-age (retirement), disability, survivor (death) benefits and health insurance. It also offers lump-sum funeral expense payments and supplementary social assistance allowances. BAĞ-KUR is a social security branch often chosen by people who cannot work in the public or private sector. It aims to deliver retirement and health services to those who do not make contributions to the Civil Servants’ Fund (Emekli Sandığı) or to the Social Insurance Institution for Salaried Employees (SSK). For this reason, BAĞ-KUR requires contribution payments over periods such as fifteen or twenty-five years. These contribution payments later entitle contributors to a retirement pension and continued access to health services. When you reach the required age and have paid the necessary contributions, you become eligible for retirement and receive a pension based on the contributions you made over the years.
During the contribution period and after retirement, BAĞ-KUR members benefit from health services by paying only a small portion—often around twenty percent—of the cost. Thanks to this advantage, individuals registered with BAĞ-KUR can access treatments and services at much lower out-of-pocket costs than private sector prices.
The BAĞ-KUR system is also referred to as 4B. Paying your 4B contributions on time and regularly is crucial to securing pension rights and uninterrupted access to health services. If you fail to pay required contributions on time, debts accumulate in your name and are subject to interest at prescribed rates. Therefore, timely and regular payment of contributions is very important. The “Bağ-Kur Interest Calculation” procedures exist for this reason.
How Is BAĞ-KUR Interest Calculated?
If you have made excess contribution payments to the BAĞ-KUR system for certain periods, you may request a refund of those overpayments from the Social Security Institution, provided the claim is submitted from 2013 onward. Refunds for excess payments are possible under specific conditions.
To be eligible to request a refund of excess contributions, the following conditions must be met:
- No outstanding contribution debt to the institution
- No administrative fines
- No late-payment interest or outstanding late-payment debts
- The employer or the workplace’s responsible SGK office files the request when applicable
If these conditions are satisfied, excess payments found in your contribution records are calculated from the month following the date of the first payment. All excess contributions paid after that date are totaled and refunded to you with statutory interest.
Note that excess contribution payments made before October 1, 2008 are not refundable. Interest calculations apply to the amounts paid on or after that date and to the difference between pre- and post-October 1, 2008 contributions.
You must submit an application to obtain a refund for any excess payments you have made.
For a sample refund petition for BAĞ-KUR excess payments, see the example provided in official petition formats.
BAĞ-KUR Refund Petition Example
Refunds of contributions can be processed in two main ways: lump-sum payments related to old-age benefits and lump-sum payments related to death benefits.
How Is Late-Interest Calculated?
Late-interest (delay interest) is applied under Law No. 6183. Over time the calculation method and rates have changed, so different rates may apply depending on the period. The current monthly late-interest rate is set at 1.4%. Different rates were used for due dates before October 19, 2010.
Monthly Late Interest Amount = (Monthly Late Interest Rate) x (Number of Months) x (Amount Subject to Late Interest)
There are official calculators you can use to compute the BAĞ-KUR late-interest amount for your specific situation.
BAĞ-KUR Late-Interest Calculation Tool
Late-interest is applied when contributions are paid after their due date. This late surcharge is generally applied to a wide range of public debts such as tax penalties, fines, taxes and fees owed to public administrations or municipalities, and costs associated with enforcement and collection processes.