Terms of Service

1. Scope and operator

These terms apply to the public website, access requests, access calls, beta onboarding and the DeinHans bookkeeping product unless a validly agreed customer agreement states otherwise. DeinHans is operated by Ariel Ben Shushan ERP Consultant, Frankfurter Allee 108a/Fabrikgebäude 2. Hof, 10247 Berlin, Germany.

2. Business customers only

The service is offered exclusively to entrepreneurs acting in the course of their commercial or independent professional activity, legal entities under public law and special funds under public law. It is not offered to consumers.

• Access requests may require company name, business contact details, role or authority, business identifier where appropriate and confirmation that the requested month relates to business activity.
• If we cannot verify the business context or authority, we may reject, defer, or limit access.
• Do not submit private household bookkeeping, consumer tax matters, or non-business financial documents.
• If a consumer-law route is ever offered, it will use separate pre-contract information, withdrawal, payment-button, cancellation and gross-price rules.

3. Beta status and acceptance by us

DeinHans is currently offered in a limited B2B beta. Public assisted-access forms remain non-binding requests. An eligible business using the direct Engine route can create an account and start setup, but a customer relationship and trial begin only after identity confirmation, company and price confirmation, acceptance of the applicable terms and successful workspace activation. We may reject, defer, limit, suspend, or stop beta access where needed for fit, capacity, compliance, security, misuse prevention, payment status, or product reliability.

4. Service scope

DeinHans provides software for source intake, document extraction, bookkeeping proposals, payment matching, validation, configured approval and posting, correction history and monthly export. The accepted package and onboarding agreement define the supported scope and review settings. These software functions do not include professional acceptance, tax advice or filing services.

5. No tax, legal, or professional advice

DeinHans is a preparation and handoff product. System outputs, explanations, classifications, reports, exports, checks and suggestions are not tax advice, legal advice, accounting advice, professional sign-off, filings, audit services, or a substitute for a licensed accountant, tax advisor, lawyer, or auditor. Professional judgment, filings, annual accounts, payroll and special advisory remain with qualified professionals.

6. Access and accounts

You must provide accurate company, contact, billing, role and bookkeeping setup information, keep credentials secure and ensure that only authorized users access the product. You are responsible for activity under your account unless caused by our breach of security obligations.

7. Access request and onboarding rules

Submitting an assisted request, booking a call, or receiving a reply does not guarantee service acceptance. For the direct Engine route, acceptance occurs only when the eligible business confirms identity, company and exact price, accepts the applicable terms and the workspace/trial activation succeeds. Other routes require our explicit confirmation or a separate agreement.

• We may require an access call, source review, identity/company check, package confirmation and payment setup before granting access.
• We may refuse or postpone requests that are outside scope, legally sensitive, technically unsupported, high-risk, abusive, incomplete, or not suitable for beta capacity.
• Marketing claims, demo screenshots and public examples describe intended workflows and may use synthetic data; they are not service guarantees.
• If we provide early access, it may be limited by users, organizations, sources, booking lines, months, integrations, countries, or review paths.

8. Customer responsibilities

You remain responsible for the information, documents, context, permissions and decisions you provide or rely on.

• Provide complete, lawful, current and truthful documents, bank exports, source data, business context and billing information.
• Maintain a lawful basis and required notices for any personal data of employees, customers, suppliers, counterparties, or other third parties included in uploaded or connected materials.
• Answer open business questions promptly and accurately, including private/business use, missing proof, unusual transactions, contracts, refunds, payouts and source gaps.
• Review outputs, tasks, reports, exports, classifications, VAT treatment, payment matching and handover packages before relying on them.
• Keep original records and comply with statutory bookkeeping, tax, commercial, retention and filing obligations that apply to you.
• Involve a licensed accountant, tax advisor, lawyer, or other qualified professional for professional judgment, filings, tax advice, legal advice, annual accounts, payroll and special cases.

9. Accountant and partner work

When a licensed firm performs professional review, tax filings, annual accounts, or advisory work, that work is provided only under a separately accepted mandate. The firm remains responsible for professional judgment, filing, approval, fees, liability and professional duties. DeinHans prepares bookkeeping records and routes open questions; DeinHans itself does not provide tax or legal advice.

10. Customer content and data protection

Customer data remains customer data. Public request forms are for fit information only and must not be used for invoices, receipts, bank exports, employee/customer data, or confidential bookkeeping documents. Before live uploads or connections are enabled, the applicable agreement must include or be accompanied by a data processing agreement where required. By uploading or connecting materials after onboarding, you grant us the rights needed to host, process, analyze, prepare, secure, support and transmit that data for the service. During the active beta, a small group of specifically authorized DeinHans quality personnel may review uploaded documents and related processing results only where reasonably necessary to validate output quality, investigate an issue, or support you. This review is subject to need-to-know access controls and confidentiality obligations; relevant service actions may be recorded for security and audit purposes. Customer content is not used for unrelated advertising or to train general-purpose AI models. You must not upload unlawful content, malware, data you are not allowed to process, or material that infringes third-party rights. The Article 28 DPA and TOMs must define instructions, authorised subprocessors and locations, transfer safeguards, assistance with rights and incidents, audit information and return or deletion. Necessary beta quality review must remain within those agreed instructions and safeguards. This page does not establish that a DPA has already been signed for a particular customer.

11. Pricing, billing, taxes and cancellation

The direct DeinHans Engine prices are shown net of VAT and are assigned from the confirmed legal form and annual net-revenue band. Eligible direct organizations receive a 30-day no-card trial after successful workspace activation. Stripe operates direct subscription billing and the Customer Portal. Professional-firm work, managed-client commercial arrangements, unsupported scope and exceptional services remain separate and require an explicit order, mandate, or agreement.

• The DeinHans Engine costs EUR 29, EUR 49, or EUR 99 per month for an eligible business, depending on legal form and annual net revenue. Any professional mandate with an accounting firm is separate and begins only after the firm accepts it.
• A booking line, included line volume, overage rate, correction/retry treatment, supported entities, sources, integrations, months, users, third-party fees, professional-fee component and invoicing flow must be defined in the accepted order, mandate, or onboarding confirmation.
• Not included unless agreed separately: annual accounts, tax returns, payroll, legal advice, tax advisory, historical cleanup, special advisory, unusual one-off cases, unsupported countries, or unsupported integrations.
• Fees are due according to the agreed billing terms. Late payment may lead to suspension or termination after appropriate notice where required.
• Cancellations, renewals, credits, refunds, export periods and treatment of rejected or unsupported months are governed by the accepted order or separate agreement; statutory rights and mandatory law remain unaffected.
• No amount is due when the direct trial starts. If the trial ends without a valid payment method, the subscription is paused and no charge is attempted. Adding a payment method and resuming the subscription authorizes future recurring charges under the confirmed plan and billing terms.

12. Availability and no guaranteed service level

We operate the beta service with reasonable care but do not guarantee uninterrupted availability, error-free operation, specific processing times, specific accountant outcomes, acceptance into beta, continued beta access, or compatibility with every bank, portal, accounting system, file, source, or customer case. Maintenance, provider incidents, security events, capacity limits, or integration outages may affect access.

13. Third-party services and integrations

The service uses Supabase, Vercel, Railway and OpenAI for the agreed product processing. Resend supports communication; Stripe handles billing, Cal.com scheduling and Notion enquiry and contact records. OpenRouter is not currently enabled to process customer documents. The DPA and annexes identify active subprocessors, purposes and international processing. Any expansion follows the agreed notice and objection provisions and applicable legal requirements. Using service providers does not remove our own contractual or statutory duties.

14. Automation and AI-assisted preparation

DeinHans combines deterministic rules with AI-assisted extraction, classification, matching and review. AI outputs can be incorrect or incomplete. Validation, visible exceptions, configured approval rules and corrections govern their use; your firm retains professional judgment and final acceptance. Provider processing and retention are described in the privacy notice and DPA. We do not promise universal zero retention, exclusive EU processing, an AI Act certificate or a completed high-risk conformity assessment. Use outside the agreed bookkeeping purpose requires a separate assessment and agreement.

14a. Traceability and GoBD

DeinHans supports GoBD-compliant bookkeeping through linked original documents, traceable processing and decisions, and protection of posted entries. Corrections must remain traceable. The business and firm check completeness, professional accuracy and import into the target accounting system. They maintain their existing statutory archive, including originals, and document responsibilities, interfaces and controls. DeinHans remains responsible for its own protection and cooperation duties. A monthly export does not replace the complete archive or every data-access requirement of a tax audit. No official or independent GoBD certification is promised.

15. Intellectual property

The website, product, software, workflows, designs, text, templates, models, prompts, documentation, reports structure and brand assets remain the property of DeinHans or its licensors. You may use the service only as permitted by these terms or a signed agreement. Customer data remains customer data.

16. Confidentiality and security

Each party protects non-public business, financial, professional and customer information, uses it only for the agreed purposes and limits access to authorised persons who need it. Confidentiality continues after termination. Where German professional secrecy applies, the service agreement must address section 203 StGB and section 62a StBerG, including confidentiality undertakings, further providers and overseas processing. Personal-data breach handling, assistance and notification follow the GDPR and DPA; as processor we notify the controller without undue delay. General terms do not replace the required secrecy and processing arrangements.

17. Liability

Our liability is unlimited for intent and gross negligence, injury to life, body or health, fraudulent concealment, expressly assumed guarantees and mandatory statutory liability, including applicable data-protection liability. For ordinary negligence, we are liable for breach of essential contractual duties, limited to foreseeable damage typical of the contract. Essential duties are those that enable proper performance and on which the customer may regularly rely. Other liability for ordinary negligence is excluded where legally permissible. Shared responsibility and reasonable mitigation follow applicable law. Free access, AI use or involvement of a subprocessor do not create a blanket exclusion of our liability. Individual agreements and mandatory statutory rights remain unaffected.

18. Suspension and termination

We may suspend or terminate access for misuse, security risk, non-payment, unlawful use, high-risk data, unsupported scope, beta capacity limits, provider restrictions, or material breach. The applicable order or agreement should state the effective date, payment consequences, export format and period, read-only period if any, deletion schedule, statutory retention override, backup timing, treatment of any professional mandate and continuing confidentiality.

19. Changes to these terms or the service

We may develop and technically adapt the software while preserving the agreed service and level of protection. We give timely notice of material adverse changes. Changes to existing prices, principal services or contractual duties do not take effect merely by updating this website, customer silence or continued use. Required contractual changes are expressly agreed. Without agreement, the existing terms continue until valid termination. Individually promised discounts remain protected within their agreed scope.

20. Governing law and venue

German law applies, excluding conflict-of-law rules, unless mandatory consumer protection law requires another rule. If you are a merchant, legal entity under public law, or special fund under public law, the courts of Berlin, Germany, have jurisdiction to the extent permitted by law.