Sparkasse Hamm API Access — open-banking.io Sync

Pulling live account data out of Sparkasse Hamm no longer means wrestling with the bank's own portals or PSD2 certificate paperwork. With open-banking.io you connect once and keep your Sparkasse Hamm accounts synced — balances refreshing, new transactions flowing into your own tools, dashboards, or bookkeeping stack in near real time.

The integration works for both business and personal accounts held at Sparkasse Hamm, so a treasurer reconciling company cash flow and an individual tracking household spending use the same simple connection.

How to connect Sparkasse Hamm

  1. Create an open-banking.io account and open the connection dashboard.
  2. Search for Sparkasse Hamm (BIC WELADED1HAM) in the bank list.
  3. Authenticate directly on Sparkasse Hamm's secure login — your credentials go to the bank, never to us.
  4. Approve the accounts you want to share.
  5. Start reading data instantly through one consistent REST API.

What data you get

Once linked, Sparkasse Hamm exposes:

  • Accounts — identifiers, IBANs, currency, and product type
  • Balances — current and available amounts
  • Transactions — booked and pending entries with counterparties, dates, and references

Every bank in the network — 2,600+ across the EU and UK — is normalized to the same schema, so code written for Sparkasse Hamm works elsewhere unchanged.

A single user consent stays valid for up to 180 days before Sparkasse Hamm asks you to re-authorize. Across that window your sync runs without repeated logins, and renewing takes seconds.

Privacy by design

open-banking.io is zero-knowledge: your Sparkasse Hamm login is entered only on the bank's page, and we never store or see it. There are no eIDAS/QWAC certificates to buy, register, or renew — the platform handles the regulated access layer for you, so there is nothing to provision on your side.

Pricing

Access is a flat ~EUR 3 per month — no per-call fees, no enterprise minimums, no setup cost. Connect Sparkasse Hamm alongside any other supported bank under the same plan.

FAQ

Is my Sparkasse Hamm password stored?

No. Authentication happens on Sparkasse Hamm's own login, and open-banking.io operates zero-knowledge — credentials never reach our servers.

Which Sparkasse Hamm accounts are supported?

Both business and personal accounts, including balances and full transaction history.

How often do I re-authorize?

Consent lasts up to 180 days; after that Sparkasse Hamm prompts a quick re-confirmation.

Ready to sync your accounts? Get started at open-banking.io.