Glossary
Official Exchange Rate of the Bulgarian National Bank
The official rate that indicates the value of the national currency against various foreign currencies. It is published every working day on the website of the Bulgarian National Bank.
One‑Time Password (OTP)
A one-time code for online payments or account login, received via SMS, generated by an m-token, or a mobile application. It may be supplemented or replaced by biometric authentication to enhance security for account access or transaction execution.
Online Banking - glossary for children
Using the internet to check the money in a bank account, send money to someone else, or pay bills, local taxes, and other payments.
Online (Internet) Banking
A digital banking service that allows clients to manage their bank accounts via the internet using a web browser on a computer, laptop, or other device. Access is granted through the bank’s website using a username and password, often with additional security measures such as SMS codes, tokens, or biometric authentication.
Online Payment - glossary for children
Paying for a purchase on the internet with a card.
On sale - glossary for children
A special offer with a lower price for a product or service, for example, during holidays or special campaigns.
Operating Lease
A contract under which the lessor grants the lessee the right to use a long-term asset (such as a vehicle, equipment, or machinery) for a specified period in exchange for periodic payments, without transferring ownership of the asset at the end of the lease term.
Opportunity Cost
An abstract concept representing the second-best alternative — the one you gave up because you preferred the first.
Option
A derivative financial instrument that gives the holder the right, but not the obligation, to buy or sell an underlying asset (such as shares, currency, commodities, or indices) at a predetermined price (strike price) within a specified period or by a certain date.
Organized Trading System
An alternative electronic market for trading financial instruments (such as shares, bonds, derivatives, etc.) that ensures transparency, oversight, and compliance with market rules, without being a regulated exchange. According to the Markets in Financial Instruments Act, it is organized and managed by an investment intermediary or market operator and is subject to licensing by the Financial Supervision Commission.
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