“Can a tax-automation app become the full financial OS — banking, invoicing, and compliance — for Belgium's 1M+ self-employed?”
Accountable started as a mobile-first tax and bookkeeping tool for Belgium's self-employed, automating VAT declarations and income tax returns. It has progressively expanded into a broader financial OS by embedding banking (via Swan) directly into the app, integrating Peppol e-invoicing, and opening an accountant-facing platform. The company's strategic pivot is from a tax compliance tool to an all-in-one financial companion that replaces both the bank account and the accountant for freelancers.
Accountable discloses Swan as its banking provider, according to the Embedded Finance Index 2026.
Accountable does not disclose a bank charter of its own; its banking services are provided through Swan.
Accountable processes payments through Stripe. Disclosed money-movement rails: SEPA.
Accountable's cards are issued through Swan.
Accountable integrates with External accounting software (unnamed — referenced in Accountable Connect help article).
The Embedded Finance Index 2026 maps 6 layers in Accountable's stack: Payments / PSP (Stripe); Money movement (SEPA); Banking / BaaS (Swan); Card issuing (Swan); Accounting (External accounting software (unnamed — referenced in Accountable Connect help article)); Tax (Wundertax).
Accountable was founded by Nicolas Quarré and Alexis Eggermont and is headquartered in Brussels, Belgium.
Get a read on where your own stack stands against Accountable and the rest of its category — what they built versus bought, which providers they use, and where the gaps in your own strategy and competitive set actually are.