Terms & Conditions

These General Terms and Conditions (GTC) apply to the use of the SaaS platform BauFin, operated by Krone Baustein e.K., Eschenstieg 1, 20259 Hamburg, Germany (hereinafter "Provider").

BauFin is a web-based financial management software for construction companies and trades. Access is via web browser — no installation required.

Deviating terms of the user are not recognized unless the Provider expressly agrees in writing.

The Provider makes the BauFin platform available to the user as Software-as-a-Service (SaaS). The scope of services depends on the selected plan (BauFin Foundation) and booked add-on modules.

BauFin Foundation includes: Dashboard, Customer Management, Invoices, Expenses, Quotes, Orders, Projects, Time Tracking, Mileage Log, Receipt OCR, Reminders, Income Statement, Cashflow, Controlling, Forecast, Tax Management, Archive, Settings, Push Notifications, Voice Dictation and Fixed Costs Calendar.

Add-on modules (separately bookable): Employees, Subcontractors, Customer Portal, Accountant Portal, Financial Guide, Datenexport Pro.

The Provider aims for an availability of 99% on an annual average. Planned maintenance is announced in advance.

The contract is formed upon registration on the platform and confirmation via email.

The user warrants that the information provided during registration is complete and accurate. Changes must be communicated immediately.

Each user receives a free 30-day trial period with full functionality after registration.

The trial period is 30 days from registration and is free of charge. All features including add-on modules are available during the trial.

After the trial expires, access is restricted to read-only mode (no data modification). The user is notified by email.

If no payment details are provided within 35 days after the trial expires, all data will be irreversibly deleted. The user is notified by email 14 and 7 days before deletion.

Current prices are available on the pricing page (baufin.app/pricing). All prices are in euros and include statutory VAT.

Billing is monthly in advance. Payment is processed via Revolut or PayPal.

In case of payment default, the user is notified by email. After 3 unsuccessful payment attempts, access is restricted to read-only mode.

Price changes are communicated to the user at least 30 days in advance by email. The user has the right to cancel within this period.

The contract runs for an indefinite period with a monthly billing cycle.

The user may cancel at any time effective at the end of the current billing period. Cancellation is done via the platform (Settings → Subscription) or by email.

The user may delete their account at any time (Settings → Profile → Delete account). All data is deleted immediately and irreversibly.

The right to extraordinary termination for cause remains unaffected for both parties.

The user is responsible for the security of their login credentials. Login data must not be shared with third parties.

The user agrees not to use the platform unlawfully, in particular not to store illegal content.

The user is responsible for the accuracy and completeness of the data entered.

The user is obliged to regularly back up their data. BauFin provides the free "Data Copy" function (Settings → Data Copy) for this purpose. Additionally, the user may subscribe to the paid "Datenexport Pro" service, which performs a daily automatic export.

The Provider is fully liable for intent and gross negligence, as well as for damages resulting from injury to life, body or health.

In cases of slight negligence, the Provider is only liable for breach of material contractual obligations (cardinal obligations). Liability is limited to the typical, foreseeable damage.

BauFin is financial management software — not tax advice. The Financial Guide does not replace professional tax advice. The Provider assumes no liability for tax decisions made based on the software.

The Provider is not liable for data loss if the user has failed to make regular backups (Settings → Backup).

The Provider processes personal data in accordance with the Privacy Policy (baufin.app/datenschutz) and the GDPR.

The Provider implements technical and organizational measures to protect data. Tenant separation ensures that data from different users is completely isolated.

(1) The Provider offers an optional, paid add-on service called "Datenexport Pro". This service includes the daily automatic export of all user business data in a machine-readable format (JSON in ZIP file) and email notification with a download link.

(2) Export files are stored in encrypted form on Backblaze B2 (data centre Amsterdam, EU). The retention period is 30 days. Exports from the last 7 days are available in the user panel.

(3) The download link is valid for 72 hours and limited to a maximum of 5 downloads. Each download is logged for audit purposes.

(4) The Provider guarantees an export availability of 99.5% per calendar month. Planned maintenance is excluded and will be announced at least 48 hours in advance.

(5) The Recovery Point Objective (RPO) is 24 hours. This means that in the event of a disruption, the export may not contain data from a maximum of one day.

(6) Details on the availability and quality of the service are set out in the Service Level Agreement (SLA) at baufin.app/sla.

(1) The user is obliged to regularly use the data backup options provided by the Provider and to save copies of their data on their own storage media — at least once per week.

(2) BauFin provides two options for this purpose: a) The free "Data Copy" function (Settings → Data Copy), which allows manual download at any time. b) The optional "Datenexport Pro" service, which automatically performs the export daily and provides a download link by email.

(3) Users of the "Datenexport Pro" service are obliged to regularly download the provided export files — at least once per week.

(4) If the user fails to regularly back up their data, any resulting damage shall be taken into account as contributory negligence on the part of the user pursuant to § 254 BGB (German Civil Code). In such cases, the Provider's liability is limited to the restoration effort that would have been necessary had the user properly backed up their data.

(1) The Provider is fully liable for damages resulting from injury to life, body or health, as well as for damages arising from intentional or grossly negligent conduct.

(2) In the event of breach of material contractual obligations (cardinal obligations) due to slight negligence, liability is limited to the typical, foreseeable damage. Liability is limited in this case to twelve times the monthly fee for the "Datenexport Pro" service.

(3) Any further liability for slight negligence is excluded.

(4) The Provider holds IT professional liability insurance. Details on request.

The laws of the Federal Republic of Germany apply, excluding the UN Convention on Contracts for the International Sale of Goods.

Should individual provisions of these GTC be invalid, the validity of the remaining provisions shall not be affected.

Changes to these GTC will be communicated to the user by email. The amended GTC are deemed accepted if the user does not object within 30 days of notification.

As of: April 2026