ING Wholesale Banking Slovakia API & Open Banking Access

Corporate treasurers and finance teams working with ING Wholesale Banking in Slovakia often need programmatic visibility into their business accounts without wrestling with eIDAS certificates or maintaining a bespoke PSD2 integration. open-banking.io removes that friction: it links to ING Wholesale Banking's Slovak branch through a single dashboard and hands you clean, decrypted account data that only you can read.

The service covers 2,600+ banks across the EU and UK. For ING Wholesale Banking (Slovakia) it supports business account access, with consent lasting up to 180 days before you re-approve. No BIC is required on your side, and there are no certificates to buy or renew.

How to connect ING Wholesale Banking

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

  1. Sign up for an open-banking.io account.
  2. Set an encryption passphrase. Your keys are generated locally on your own device, so open-banking.io only ever holds your public key.
  3. In the dashboard, pick ING Wholesale Banking (Slovakia) and choose the business account type.
  4. You are redirected to ING Wholesale Banking's own secure login to approve access under PSD2 — you authenticate directly with the bank, never with us.
  5. Once approved, your accounts sync back into your dashboard, ready to view.

That's the whole flow. The account holder always consents on ING's own screen, and no third party ever sees your banking credentials.

Access your data

Reading the data programmatically is an optional developer step that comes after the connection exists. From 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 directly.

Every request carries the X-Api-Key header, and every response is decrypted locally with your own key. The API key alone only ever returns ciphertext — without your private key, the data stays unreadable, which is what makes the platform genuinely zero-knowledge. The CLI and SDK read and sync existing connections; they never establish new ones.

At roughly EUR 3/month, it's a low-cost, certificate-free path to your ING Wholesale Banking data.

FAQ

Do I need an eIDAS certificate to connect?

No. open-banking.io is certificate-free — you connect through the dashboard and approve on ING Wholesale Banking's own consent screen.

Can open-banking.io read my account data?

No. Data is decrypted locally with a key only you hold. Our servers store only your public key and ciphertext, never anything readable.

How long does access last before I renew?

Up to 180 days per consent, after which you re-approve on ING Wholesale Banking's login screen.

Ready to start? Visit open-banking.io.