Please read this License Agreement ("Agreement") carefully before clicking the "I Accept the Terms & Conditions" button.

By clicking the "I Accept the Terms & Conditions" button, you are agreeing to be bound by the terms and conditions of this Agreement to use the APIs in the Sandbox.

If you do not agree to the terms of this Agreement, do not click on the "I Accept the Terms & Conditions" button and do not add the API to the list of APIs your application will access.

1. Definitions

When used in this Agreement with the initial letters capitalized, in addition to the terms defined elsewhere in this Agreement, the following terms have the following meanings:

∙ API means the UNITED BULGARIAN BANK’S (UBB) application programming interface;

∙ Intellectual Property Rights means all patents, copyright and related rights, trademarks, logo, service marks, trade, design rights, business and domain names, rights in trade dress or get-up, rights in goodwill or to sue for passing off, rights in designs, database rights, rights in confidential information (including know-how and trade secrets) and any other intellectual property rights, in each case whether registered or unregistered and including all applications for, and renewals or extensions of, such rights, and all similar or equivalent rights or forms of protection in any part of the world.

∙ Sandbox is the software testing environment that enables the isolated execution of software or programs for independent evaluation, monitoring or testing. 

2. License

UBB grants you a limited,  non-transferable, non-exclusive, as-is, non sub licensable license

to use the API for the sole purpose of developing and testing your applications.

3. Restrictions

You shall not- 

∙ change or delete any copyright, trademark, tradename or other proprietary notices, legends, symbols, or labels appearing on or in the API;

∙ Disclose, share  or divulge any of the API specifications to any third party;

∙ Represent in any way that your application is approved, recommended or endorsed by us;

∙ Disable, or by pass any security protocols or measures or technical limitations of the APIs; 

∙ Modify, decompile, reverse engineer or otherwise alter the APIs;

∙ Participate or engage in any activity which restricts, hinders, impedes, interrupts or harms the API in any way or permits unauthorised access to the API;

∙ Use the API and the content thereon for any purpose other than those expressly permitted by these Terms of Use

UBB reserves the right to modify, suspend or discontinue, temporarily or permanently, the APIs, with or without notice and without liability to you.

4. Intellectual Property

Intellectual Property Rights 

4.1 We retain all Intellectual Property Rights with respect to UBB API’s,  including content and documentation and these may not be copied, transmitted or reproduced without our  prior consent. All Intellectual Property Rights and other rights in connection with the Portal  (including without limitation, information, graphics, software, text, sounds, images, trade marks, service marks, trade names and logos) are vested in us or our licensors.   You agree that you shall not obtain any Intellectual Property Rights, title or interest in the Portal other than in accordance with these Terms of Use.

4.2  You undertake not to do anything which would bring UBB or any of it trademarks, trade names, logos, or branding into disrepute or harm the reputation and goodwill of UBB.

4.3 You acknowledge and agree that we may independently develop or create applications, content or other services or products that may be similar to and/or compete with your applications and nothing in these Terms of Use shall prevent us from exploiting any such commercial opportunities.

5. Term and Termination

This Agreement shall remain in effect until terminated by you or UBB. 

UBB may, in its sole discretion, at any time and for any or no reason, suspend or terminate this Agreement with or without prior notice.

This Agreement will terminate immediately, without prior notice from UBB, in the event that you fail to comply with any provision of this Agreement. You may also terminate this Agreement by deleting the Application on our API.

Upon termination of this Agreement, you shall cease all use of the APIs on the Sandbox.

6. Severability

If any provision of this Agreement is held to be unenforceable or invalid, such provision will be changed and interpreted to accomplish the objectives of such provision to the greatest extent possible under applicable law and the remaining provisions will continue in full force and effect.

7. Amendments to this Agreement

UBB reserves the right, at its sole discretion, to modify or replace this Agreement at any time. What constitutes a material change will be determined at our sole discretion.

8. Applicable law and jurisdiction

The provisions of the Bulgarian law shall apply to this Agreement. Disputes betwen UBB and you related to, or arising from this Agreement shall, unless settled amicably between UBB and you, be brought for resolution before the competent Bulgarian court in Sofia, Bulgaria.

Notification of termination of the activities related to calculating and publishing SOFIBOR and resultant changes for business clients


Dear clients,

We would like to inform you that, as required by Regulation (EC) 2016/1011 of the European Parliament and of the Council, as of 01.07.2018 BNB will discontinue the activities related to the calculation and publication of the SOFIBOR index.

In this respect and in compliance with the adopted amendments to the Law on Credit Institutions, United Bulgarian Bank has adopted "UBB Contingency Plan for a substantial change or cancellation of a benchmark", which applies directly in case any of the benchmarks used so far to calculate a floating or reference interest rate under credit agreements (such as Sofibor / Euribor / Libor, etc.) is abolished or substantially changed.

As of 01.07.2018, under all new credit agreements in BGN with floating interest rate for business customers, including overdrafts, credit lines with floating interest rates, UBB will apply an annual interest rate determined on reference interest rate (RIR) of United Bulgarian Bank plus fixed margin.

For credit agreements for business clients in BGN (including overdrafts, credit lines and bank guarantees) concluded before 01.07.2018, for which the total amount of the interest rate is determined on a one-month / three-month / six-month / nine month/ 1 year SOFIBOR plus a flat-rate fixed margin, the bank will fix the floating interest rate component to the last applied value under the credit agreements for a transitional period of three months (until 30.09.2018 inclusive). Within this transition period, the aggregate amount of the interest will be kept as an absolute amount according to the last value accepted by the bank for SOFIBOR prior the date of the official discontinuation of its preparation and maintenance applicable to the respective contract, but not less than the amount of the flat-rate fixed margin or the minimal threshold for the interest rate described in the contract.

Upon expiration of this transition period, as of 1st October 2018 in reference to the application of the „UBB Contingency Plan for a substantial change or cancellation of a benchmark“, the Bank will apply directly to all credit agreements to business customers, including overdrafts, credit lines and bank guarantees, UBB Reference Interest Rate (RIR) per BGN + the agreed fixed margin. All other clauses and conditions stipulated in the contract remain valid.

More detailed information about the methodology and the formula for calculating the Reference Interest Rate for UBB can be found here.

In the case of any changes to the credit agreements, in relation to the above, customers will be notified in the manner provided by the applicable law and the particular contract.

UBB Team