National Bank of Greece API
🇬🇷 Greece
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National Bank of Greece exposes an open banking API built on the Berlin Group NextGenPSD2 standard, covering account information (AIS), payment initiation (PIS) and confirmation of funds (CBPII). Beyond the regulated PSD2 baseline it also offers 3 premium API categories: statement reporting, multi-bank aggregation and bulk payments.
Access uses OAuth 2.0 with redirect SCA, over a REST interface. A sandbox is available, though access is not self-service.
The API serves Greece. BankSnipe rates National Bank of Greece's API maturity 5/5 (Mature), last reviewed 11 Jun 2026.
Overview
- API standard
- Berlin Group NextGenPSD2
- API style
- REST
- Authentication
- OAuth 2.0 · SCA: redirect
- Sandbox
- Available
- Last reviewed
- 11 Jun 2026 · 2 months ago
Products
Premium APIs
Maturity signals
- Account info (AIS)
- Payment initiation (PIS)
- Confirmation of funds (CBPII)
- Premium / beyond-PSD2 APIs
Links
- Website
- https://www.nbg.gr
- Developer portal
- https://developer.nbg.gr
Notes
NBG's developer portal documents Account Information, Payments and Confirmation of Funds (plus utility APIs like IBAN validation and points-of-interest) on the Berlin Group standard, with a sandbox.
National Bank of Greece API: frequently asked questions
Does National Bank of Greece have a public API?
Yes. National Bank of Greece publishes regulated PSD2 open banking APIs covering account information (AIS), payment initiation (PIS) and confirmation of funds (CBPII), plus premium APIs beyond that baseline. Registration and documentation live on its developer portal at https://developer.nbg.gr.
Does National Bank of Greece offer an API sandbox?
Yes. Sandbox access is available but not self-service, so you go through the bank to get in.
Which open banking standard does the National Bank of Greece API use?
Berlin Group NextGenPSD2: the most widely used European open-banking API standard. Two banks on the same standard can still differ in the details, so read the bank's own documentation before you build.
How do you authenticate with the National Bank of Greece API?
OAuth 2.0, with redirect SCA for the customer consent step. Production access to the regulated endpoints also means registering as a licensed third-party provider with the bank.
Does National Bank of Greece offer premium APIs beyond PSD2?
Yes. We have recorded 3 premium categories on National Bank of Greece: statement reporting, multi-bank aggregation and bulk payments. These sit above the regulated PSD2 baseline and are the ones corporate treasury teams tend to care about.
Which countries does the National Bank of Greece API cover?
Greece.
Is the National Bank of Greece API free to use?
Banks generally do not charge licensed third-party providers for the regulated open banking endpoints, which is the point of the mandate. Premium APIs above that baseline are commercial products priced by the bank. BankSnipe does not track pricing, so confirm it with the bank.
How mature is the National Bank of Greece API?
BankSnipe scores it 5 out of 5 (Mature). The score counts how many of the four product signals are live: AIS, PIS, CBPII and premium APIs beyond the regulated PSD2 baseline.