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Automated tax due diligence.
Professional expertise, where it matters.

Due Dil Yourself is software that speeds up tax due diligence for experts, so they can focus their work on risk analysis, negotiation and advising their clients.

How it works

  1. 01You upload, we process

    In practice, DDY analyses the documents uploaded to its interface and produces reports and spreadsheets that meet professional standards.
    Document requests and questions are updated dynamically.

  2. 02Due Dil Yourself is not agentic AI

    The entire reasoning path and every logical node were built in by our teams of practising experts, and are not left to the probabilistic approach of AI.
    We do not work from prompts.

  3. 03The analysis is auditable and consistent

    Our clients can check the review tests applied, and every conclusion rests on traceable, precise and up-to-date references.

  4. 04Our software and hosting are secure

    Your data is analysed and hosted in the European Union, with no outbound flow to, or storage with, American or Chinese AI models or servers. The models we use are hosted locally on our own infrastructure or with Mistral AI.

  5. 05We do not bill by the token

    We do not depend on the pricing plans and price changes of mainstream model providers.

  6. 06Our team is by your side

    We work with tax lawyers who can step in when needed, at your request.

Who it’s for

DDY is built for tax experts and everyone involved in tax due diligence.

  • Tax lawyers

  • Chartered accountants

  • In-house tax departments

  • W&I insurers

  • Investors, buyers and sellers

Team

Arthur Gerges and Nathan Danel, founders of Due Dil Yourself

Arthur Gerges

Arthur is a tax lawyer and an HEC Paris graduate (class of 2017), with experience at the leading transactional tax firms (CMS Francis Lefebvre, Deloitte Société d’Avocats, PwC Société d’Avocats).

When he is not working, Arthur plays jazz guitar, which gave him a taste for three-part legal syllogisms.

Nathan Danel

Nathan leads the product’s software development and security, including AI and data protection. He specialises in cybersecurity, self-taught at first and then trained during his studies at Epitech and École 2600.

In his spare time, Nathan is a Space Fantasy enthusiast, but still has to improve his miniature-painting skills.

Frequently asked questions

Which tax documents are analysed?

Standard market documents are analysed (tax returns, tax-group returns and formalities, financial statements, CA3 VAT returns, etc.).

How do you handle missing documents?

DDY analyses the documents uploaded to its interface. Preliminary conclusions can be drawn even before every document in the audit scope has been obtained.

How do you handle cybersecurity?

Security has been built into Due Dil Yourself from the design stage through a frugal, controlled use of AI, with no external flows involving American or Chinese models that could endanger the confidentiality of your information.
Our software undergoes regular audits, reviews and security tests (penetration tests, or “pentests”), and we hold cyber insurance with Stoïk.

Does DDY replace the lawyer?

DDY does not give legal advice: it only analyses documents on behalf of tax experts, following the recommendations of the CNB (Conseil national des barreaux, the French national bar council).
If needed and on request, we can put you in touch with our network of lawyers.

How do I get started?

Nothing could be simpler: contact us, and our team will take care of installing our interface.

Contact

A question, or a deal under way? Write to us and we will reply by email.