EU Sovereignty Score
EU sovereignPaymentsHeadquarters: DE

Unzer: sovereignty score and 8 European alternatives

Unzer is a payment provider that gives merchants a single platform for online and in-person payments. Its offering covers payment methods for online shops, buy now pay later (invoice, instalments and direct debit), risk management, payment terminals and point-of-sale systems, including for hospitality. Online shops connect through a preconfigured payment page, SDKs, a REST API or plug-ins for shop platforms. Unzer focuses on the DACH region and says it serves customers across Europe.

Unzer, formerly Heidelpay, is a German company; according to a 2022 report its headquarters moved from Heidelberg to Berlin. The investment firm KKR has held a majority stake since 2019. In 2023 media reported that KKR would hand majority control to creditors (Alcentra, Goldman Sachs Asset Management and Partners Group); the sources do not confirm completion. They do not say where data is stored, so a European organisation should ask the provider. Unzer is a commercial service and is not open source.

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Sovereignty score
71 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-2100
    Headquartered in the EU: European law applies
  • Data residency SOV-3100
    EU-only hosting
  • Cryptographic key sovereignty SOV-360
    Key management with a European vendor
  • Freedom from lock-in SOV-640
    Closed source: switching requires data migration
  • Source & runtime sovereignty SOV-4 · SOV-655
    Closed source, runtime with the vendor

SOV codes: the matching objective in the European Commission's Cloud Sovereignty Framework. Official source

How the score is calculated

Facts and evidence

Last checked July 2, 2026
HeadquartersDE (EU)Verified by hand
Sovereignty modelVendor-hosted (EU)Verified by hand
Data hostingEUVerified by hand
Open-sourceNoVerified by hand
GDPR-compliantYesVendor-stated
Hosting signalAMAZON-AES - Amazon.com, Inc., US (US)Technically measured
CategoryPayments
TypeProduct
Websiteunzer.com ↗

The hosting signal shows the network that serves the vendor's website, often a CDN, and not necessarily where the service or your data is hosted. How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Unzer

The European alternatives to Unzer come from our knowledge base of over 6,200 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.

Score per alternative: 0 = high exposure, 100 = sovereign

99 European Payments vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

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Why digital sovereignty matters with Unzer

Unzer is headquartered in DE and therefore falls under European law: the GDPR, NIS2 and the Data Act. No foreign legislation can compel access to your data.

Data is hosted exclusively in the EU, so Unzer scores best on data residency.

Unzer is closed source and hosted by the vendor. The encryption keys and the runtime sit with the vendor and switching requires data migration. Ask about bring-your-own-key, export options and open standards.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Unzer together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Frequently asked questions

What is the best European alternative to Unzer?

It depends on your use case. Strong EU alternatives to Unzer include Adyen, Alma and Autopay. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Unzer?

Our list of EU alternatives to Unzer is mostly commercial options. Browse the category on the map for open-source choices.

Is Unzer GDPR-compliant and where is the data hosted?

Unzer is headquartered in DE (EU) and hosts data in EU. That makes Unzer an EU-sovereign choice in its own right; the EU alternatives on this page are comparable European tools.

Details and sources

Verified by handHeadquarters, owner, hosting locations and licence have been checked by us against public sources. Free of charge and for every vendor, not a paid label. Nothing in this knowledge base is taken over automatically. Last checked on July 2, 2026.

Sources

This record was checked via the vendor's website and legal notice during the full audit of June and July 2026. Source links have been recorded per record since 20 September 2026.

Compliance evidence

The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".

No public compliance evidence has been recorded for this vendor yet. Do you know its DPA or subprocessor list? Something wrong? Suggest a correction

Digital sovereignty in Payments

Payments: Payment services, payment gateways, online payments and financial transactions. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.

Also in this category

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8 European alternatives to Unzer — GDPR-compliant & EU-hosted · EU Sovereignty Score