ING Wholesale Banking Hungary API & Open Banking Access

ING Wholesale Banking serves corporate and institutional clients in Hungary, and its business accounts hold the payment and balance data your finance or treasury workflows depend on. With open-banking.io you can reach that data securely under PSD2 — no eIDAS certificate, no bank sponsorship, and no infrastructure to maintain. Everything is encrypted so that only you can read it: open-banking.io stores your public key and never sees your account data in the clear.

ING Wholesale Banking (Hungary) exposes business account types through open banking, with consent lasting up to 180 days before you re-authorise. There is no published BIC for this connection, so open-banking.io routes you to the correct ING login automatically.

How to connect ING Wholesale Banking

Connecting happens entirely in the open-banking.io dashboard — there is no API call, code, or key involved in this step.

  1. Sign up at open-banking.io and set your encryption passphrase. Your keys are generated locally on your own device, so the decryption key never leaves your hands.
  2. In the dashboard, search for ING Wholesale Banking (Hungary) and choose the business account type.
  3. You are redirected to ING's own secure login, where you approve access on the bank's official PSD2 consent screen.
  4. Once approved, your ING Wholesale Banking accounts sync back into your dashboard, ready to view.

That consent stays valid for up to 180 days, after which you simply repeat the approval.

Access your data

Reading data programmatically is an optional developer step you take after connecting. On the Developers page, create an API key and export a credentials.json — this bundles the API key together with your private decryption key. From there you can use the CLI (openbanking accounts, openbanking transactions, openbanking sync), an SDK, or the REST API. Requests authenticate with the X-Api-Key header, and every response is decrypted locally with your own key. An API key by itself only ever returns ciphertext — without your private key, no one, including open-banking.io, can read a thing.

All of this runs for around EUR 3/month across 2,600+ supported EU and UK banks.

Do I need an eIDAS certificate for ING Wholesale Banking?

No. open-banking.io is certificate-free — you authorise access directly on ING's consent screen, nothing more.

Can open-banking.io see my ING account data?

No. It is zero-knowledge: it holds only your public key, and your data is decrypted locally with a key only you possess.

Up to 180 days. After that you re-approve access in the dashboard to keep syncing.

Ready to begin? Connect ING Wholesale Banking at https://open-banking.io.