Accans

Category: Fintech & Neobanks

8 European alternatives to Tandem — GDPR-compliant & EU-hosted.

Non-EU vendor

UK FCA/PRA-licensed digital bank with a green/sustainability focus.

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Facts

✓ 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 October 5, 2026.How we verify
Headquarters
GB (OTHER)
EU adequacy decision
Yes — found adequate by the European Commission
Sovereignty model
Vendor-hosted (non-EU)
Category
Fintech & Neobanks
Type
Product
GDPR-compliant
Yes
Open-source
No
Data hosting
EU, OTHER

Sources

Public sources used in the latest check of this record.

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

Sovereignty profile of Tandem

How this vendor scores on the five dimensions of the Digital Sovereignty Heatmap: 0 is sovereign, 100 is high exposure. These are the same scores the assessment uses.

Jurisdictional exposure (JES)Headquartered outside the EU (GB)50
Data residency (DRS)EU and non-EU hosting (EU, OTHER)50
Cryptographic key sovereignty (CKS)Key management with a non-European vendor60
Platform lock-in (PLS)Closed source: switching requires data migration60
Source & runtime sovereignty (SRS)Closed source, runtime with the vendor70
Average58

Why digital sovereignty matters with Tandem

Tandem is headquartered in GB, outside the EU. Contracts and data therefore also fall under non-European law. The GDPR applies through contractual terms, but in a conflict with local legislation you have less certainty than with a European vendor.

Tandem hosts data in EU, OTHER. Exactly what stays within the EU — and what does not — is defined by the vendor's data processing agreement and sub-processor list, not by a setting you control yourself; check those documents for the precise scope, including backups, logs and support access.

Tandem 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 Tandem together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Top EU-based & GDPR-compliant alternatives to Tandem

The European alternatives to Tandem come from our knowledge base of over 3,600 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.

Frequently asked questions

What is the best European alternative to Tandem?

It depends on your use case. Strong EU alternatives to Tandem include ActivoBank, bunq and Finom. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Tandem?

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

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

Tandem is headquartered in GB (OTHER) and hosts data in EU, OTHER. The vendor states it is GDPR-compliant, but the data falls under non-EU jurisdiction. For full EU data residency the EU alternatives on this page usually offer more certainty.

Digital sovereignty in Fintech & Neobanks

Fintech & Neobanks: Digital banks, neobanks, money transfers and fintech services. 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

How sovereign is your whole stack?

Start with Tandem and add the rest of your software. You immediately see the score, the heatmap and the European alternatives.

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8 European alternatives to Tandem — GDPR-compliant & EU-hosted · Digital Sovereignty Heatmap