Open Banking Specifics in Slovakia
# Authentication flows and SCA
The Slovak Banking Association (SBA) has developed the Slovak Banking API Standard (SBAS), a voluntary standard that defines secure communication between banks and third-party providers in compliance with PSD2 requirements.
Slovak banks primarily use redirect-based authentication flows for Open Banking under PSD2 regulations.
Strong Customer Authentication (SCA) is typically performed through mobile banking applications with biometric authentication or through combination of PIN and SMS OTP. Most banks require users to input their online banking credentials before completing SCA through their respective mobile apps. Some banks support app-to-app redirection when the authorization is initiated from a mobile device and the bank's app is installed.
# Major Banks (ASPSPs)
The most widely used Slovak ASPSPs, in order of market significance, are:
A complete list of Slovak ASPSPs is available here (opens new window).
# Payment Specifics
All major Slovak banks support SEPA Credit Transfers (SCT) in EUR (Euro) through their Open Banking APIs, as Slovakia is part of the Single Euro Payments Area (SEPA) and uses the Euro as its currency.
SEPA Instant Credit Transfers (SCT Inst) are mandatory for all Slovak banks as of January 9, 2025, when banks must be able to receive instant payments. By October 2025, banks must also be able to send instant payments.
# Specifics per ASPSP
# 365.bank
365.bank provides redirect-based authentication flow with SCA performed through their mobile banking application.
# ČSOB
ČSOB Slovakia provides redirect-based authentication flow with SCA performed through their mobile banking application.
# Poštová banka
Poštová banka is one of the largest banks in Slovakia and offers Open Banking services according to the Slovak Banking API Standard.
# Slovenská sporiteľňa
Slovenská sporiteľňa is Slovakia's largest bank by market share. The bank implements redirect-based authentication flow with SCA handled through the bank's mobile banking application.
# Tatra banka
Tatra banka is the third largest bank in Slovakia and offers Open Banking services implemented according to the Slovak Banking API Standard.
The bank implements redirect-based authentication flow with SCA performed through the Tatra banka mobile banking app.
# VÚB banka
VÚB banka (Všeobecná úverová banka) is the second largest bank in Slovakia. The bank provides redirect-based authentication flow with SCA performed through their mobile banking application.
# Oberbank
Oberbank is an Austrian bank that also operates in Slovakia, offering banking services across multiple markets.
# Sandbox Availability
Oberbank provides a sandbox environment suitable for end-to-end testing. Sandbox credentials can be found here.