EU Sovereignty Score
EU sovereignERP & FinanceHeadquarters: CH

Mast: sovereignty score and 8 European alternatives

Mast is Swiss accounting and finance software for fiduciaries, small and mid-size businesses and interim CFOs. It covers the full invoicing cycle from offers to credit notes, accounting with journal entries and the Swiss SME chart of accounts, bank reconciliation and cash forecasting, reports such as balance sheet, income statement and VAT returns, budgets, analytics dashboards and an AI assistant that answers questions based on the user's live data. Mast is a multilingual web service.

Mast Finance Sàrl is based in Lausanne, Switzerland, an EFTA country with an EU adequacy decision. Its sub-processor list states that customer data and backups are stored in Zurich on Amazon Web Services, through AWS EMEA Sàrl in Luxembourg, and that AI processing runs mainly in Switzerland, partly in EU regions. Other named processors include Stripe for billing and Microsoft services for an optional mailbox integration and text recognition. No parent company is stated. Because the infrastructure comes from Amazon Web Services, you should review the data processing agreement and transfer terms yourself.

See the 8 European alternatives ↓Assess your stack with Mast pre-selected
MastodonLinkedInBlueskyXEmail
Sovereignty score
69 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-2100
    Headquartered in Switzerland: Swiss law, recognised by the EU as adequate
  • Data residency SOV-390
    Hosting in the EU and Switzerland
  • 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 October 14, 2026
Headquarters
CH (EU)Verified by hand
Sovereignty model
Vendor-hosted (EU)Verified by hand
Data hosting
CH, EUVerified by hand
Open-source
NoVerified by hand
GDPR-compliant
YesVendor-stated
Category
ERP & Finance
Type
Product
Website
mastfinance.io ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Mast

The European alternatives to Mast come from our knowledge base of over 9,200 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

333 European ERP & Finance vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

Is Mast one of many dependencies?

Score your whole stack in about three minutes. Free, no account needed.

Assess your stack →View a sample report (opens in a new tab)

Why digital sovereignty matters with Mast

Mast is headquartered in Switzerland and falls under Swiss law, including the revised Swiss data protection act. Switzerland is not an EU member, but the European Commission recognises its level of data protection as adequate. Its Swiss headquarters does not by itself bring it under US legislation such as the CLOUD Act.

Mast hosts data in the EU and in Switzerland. Switzerland is covered by a European Commission adequacy decision, so personal data can go there without extra safeguards. If you require strictly EU hosting, check the data processing agreement for which data is stored in Switzerland.

Mast 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 Mast 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 Mast?

It depends on your use case. Strong EU alternatives to Mast include 24SevenOffice, A3ERP and Abacus. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Mast?

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

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

Mast is headquartered in CH (EFTA) and hosts data in CH, EU. That makes Mast 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 October 14, 2026.

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

In the changelog

Earlier changes to this page, as listed in the public changelog.

Digital sovereignty in ERP & Finance

ERP & Finance: Enterprise resource planning, accounting, financial software. 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

See all →
Open in the alternatives dashboardMissing a vendor? Submit itAre you this vendor? You can also become a sponsor on the ERP & Finance page — with no effect on your score
8 European alternatives to Mast — GDPR-compliant & EU-hosted · EU Sovereignty Score