Beta Terms

Last updated: 22 April 2026

These Beta Terms govern participation in the Closed Beta of Harriet. They apply in addition to the Terms and Conditions; in case of conflict, these Beta Terms prevail.

The provider of the Closed Beta is Mario Deubler, Schödlbergergasse 16/53, 1220 Vienna, Austria (hereinafter "we"). You expressly agree to these terms on first access to the Application.

1. Beta status and purpose

Harriet is in a closed, invitation-only Beta phase. The purpose of the Beta is to validate functionality, gather feedback and improve the Application before broader market launch. The Beta is free of charge and limited to a defined group of invited users.

2. No warranties

The Beta is provided "as is" and "as available". We make no representations or warranties — express or implied — regarding availability, fitness for a particular purpose, freedom from defects, completeness or tax accuracy. Features may change, be deactivated or replaced at any time. Data may be lost in exceptional cases; keep backup copies of your receipts outside the Application as a precaution.

3. Data preparation tool, not tax advice

Harriet is a digital data preparation tool. It is expressly not a tax advisor and does not provide tax advice within the meaning of the Austrian Wirtschaftstreuhandberufsgesetz (WTBG 2017) or comparable professional regulations. The content produced by the Application — in particular categorisations, optimisation hints, tax forecasts and the generated E/A and E1a drafts — are prepared data suggestions for your own review and for review by an authorised tax advisory firm.

Responsibility for tax accuracy, for the final review, for filing with the Finanzamt and for compliance with tax obligations (e.g. record-keeping and retention obligations under BAO/UGB) lies exclusively with you or with the tax advisory firm engaged by you.

4. AI transparency and automated decisions

Harriet uses automated and AI-supported procedures. We make how it works transparent (notice under Art. 50 EU AI Act):

  • OCR: Uploaded receipts are read using OCR; texts and amounts are extracted.
  • Classification: Receipts and bank transactions are assigned to a tax category in several stages:
    1. MCC code recognition for card transactions
    2. Vendor match (known providers)
    3. EKR mapping (Austrian unified chart of accounts)
    4. Keyword match
    5. LLM fallback (AI model, where rule-based steps do not apply)
    6. Generic fallback with low confidence
  • Confidence: Each suggestion is given a confidence score. AI-generated classifications are marked as such in the Application.
  • Optimisation hints and forecasts: Calculations for income tax (ESt), SVS, profit allowance and similar metrics are rule-based, on the basis of data confirmed by you.

Notice under Art. 22 GDPR: No solely automated decision-making with legal effect takes place. Human review is required and intended before any further use of the results — in particular before submission to the Finanzamt.

5. Your responsibility as a Beta user

You undertake to:

  • upload only receipts and data which you are entitled to process,
  • review the Application's suggestions yourself or have them reviewed by an authorised tax advisory firm before filing with the Finanzamt,
  • keep backup copies of your original receipts outside the Application,
  • report defects, misclassifications and security issues to us promptly via hello@harriet.tax,
  • not pass on confidential information about the Beta (e.g. unreleased features) to third parties without our consent.

6. Limitation of liability

To the extent permitted by law, our liability for the Beta is limited to intent and gross negligence. Liability for the tax accuracy of the categorisations, calculations and optimisation hints suggested by the Application as well as for indirect damages, loss of profit or data loss is excluded to the extent permitted by law. Liability under the Product Liability Act, for injury to life, body or health, and for breach of essential contractual obligations (cardinal duties) remains unaffected; in the latter case liability is limited to the foreseeable, contract-typical damage.

7. Data protection

Processing of your personal data is described in our Privacy Policy. It explains in particular the processors we use (Vercel, Supabase, Mistral AI, Proton Mail, PostHog, Cloudflare) and the respective legal bases.

8. Data Processing Agreement (DPA)

Where you, as controller within the meaning of the GDPR, introduce personal data of your own or of others into the Application (e.g. data of your customers or suppliers on receipts), we conclude a Data Processing Agreement under Art. 28 GDPR with you. The full text is available at harriet.tax/en/avv. By accepting these Beta Terms you also agree to the DPA.

9. Ending the Beta

Both you and we may end Beta participation at any time without giving reasons. In case of violations of these terms or the T&Cs, we may suspend access with immediate effect. After termination we delete your content within 90 days at the latest, unless statutory retention obligations require otherwise. On request we will provide your content in advance in a structured format.

10. Changes

We may adapt these Beta Terms. We will notify you of material changes by email. In case of material changes, renewed consent on next access to the Application is required.

11. Contact

For questions about these Beta Terms or about Beta participation: hello@harriet.tax