Terms of Service

Mast Finance Sàrl — Effective date: 31 August 2026 — Version 1.0

1. Scope and Acceptance

These Terms of Service ("Terms") govern access to and use of the Mast Finance cloud-based accounting and treasury software platform and related services (the "Service"), provided by Mast Finance Sàrl, a Swiss limited liability company registered under CHE-136.079.732, with registered address at Rue Centrale 15, 1003 Lausanne, Switzerland ("Mast Finance", "we", "us").

The Service is intended exclusively for business customers (B2B). By accessing or using the Service, you confirm that you are acting on behalf of a legal entity and have authority to bind that entity to these Terms.

These Terms incorporate by reference:

• Privacy Policy
• Data Processing Agreement (DPA)
• Acceptable Use Policy (AUP)
• Cookie Policy
• Data Retention & Account Deletion Policy
• Refund and Cancellation Policy
• Subprocessors

2. Order of Precedence

In the event of conflict between documents, the following order of precedence applies:

1. Any signed Order Form provided by Mast Finance.
2. Data Processing Agreement.
3. These Terms of Service.
4. Referenced policies (Privacy Policy, AUP, Cookie Policy, Data Retention Policy, Refund and Cancellation Policy, Subprocessors).

Where no Order Form has been signed, precedence begins at the Data Processing Agreement and these Terms.

3. Description of the Service

The Service provides cloud-based tools including accounting support, invoicing, supplier and employee expense management, financial reporting, cash and treasury analytics, and related functionalities. Specific features depend on the subscription plan selected.

Mast Finance may add, modify, or discontinue features at any time, and will endeavour to provide reasonable advance notice of material changes.

Important: The Service does not submit filings, declarations, or returns to any regulatory or tax authority unless explicitly agreed in a separate written agreement.

4. No Professional Advice

The Service does not provide legal, tax, accounting, financial, HR, or any other form of regulated professional advice. All outputs, reports, simulations, calculations, narratives, or recommendations generated by the Service:

• are informational only and do not constitute professional advice;
• require independent professional and human review before reliance;
• must not be used as a substitute for qualified legal, tax, or financial advice.

You remain solely responsible for compliance with all applicable laws, regulations, and filing obligations.

5. Accounts and Security

You are responsible for:

• all activities conducted under your account(s);
• maintaining the confidentiality and security of credentials;
• assigning appropriate access rights to authorized users only;
• promptly notifying Mast Finance at contact@mastfinance.io of any unauthorized access or misuse.

Mast Finance is not liable for losses arising from your failure to maintain adequate account security.

6. Customer Data and Responsibility

6.1 Ownership and Licence

You retain all rights to data that you upload, input, or generate through the Service ("Customer Data"). You grant Mast Finance a limited, non-exclusive licence to process Customer Data solely as necessary to provide the Service and as described in the Data Processing Agreement.

You represent and warrant that:

• you hold all necessary rights, consents, and lawful bases to provide Customer Data;
• your use of the Service complies with all applicable laws;
• Customer Data does not infringe the rights of any third party.

You are solely responsible for validating all outputs, statutory record-keeping, and ensuring the accuracy of Customer Data. Data rights and control over each tenant vest in the account holder (the legal entity that created the account), acting through its account owner.

6.2 Support and Operational Access

To provide support, onboarding, data import, and setup services, authorised Mast Finance staff may access your tenant and Customer Data. This access is limited to what is necessary for the requested service or for maintaining the Service, and is subject to the following safeguards:

• Staff access runs through controlled internal mechanisms (a scoped staff session, and, for changes that write data, a proposal-and-approval flow or a logged raw-write session used only as a last resort).
• Staff are bound by confidentiality obligations no less protective than §11 of these Terms.
• Access and any data changes are recorded in audit logs.
• Where staff use AI assistance to help deliver support, onboarding, or setup, that AI processing runs on the AWS Bedrock managed service in Switzerland and the EU, on the same basis described in §7. It does not create any additional data flow beyond the Subprocessors listed in our Subprocessors page.

This clause is the contractual basis on which Mast Finance staff may access a tenant to deliver these services. It does not authorise access for any purpose other than providing, supporting, or maintaining the Service, or complying with a legal obligation.

7. Automated and AI-Based Features

The Service may include automated, statistical, or AI-based features. You acknowledge that:

• AI-generated outputs are probabilistic and may be incorrect, incomplete, biased, or outdated;
• outputs are provided "as is" for informational purposes only;
• you must not use AI outputs as the sole basis for decisions with legal, tax, or financial consequences;
• you are responsible for all inputs and confirm you have the legal right to use such data;
• Mast Finance does not guarantee uniqueness of AI-generated outputs.

Mast AI processes relevant data from your account using AI infrastructure operated through the AWS Bedrock managed service. Customer Data is stored in Switzerland. AI inference runs primarily in Switzerland (AWS Bedrock, Zurich region, eu-central-2) and, for reranking and burst capacity, in EU regions under the Switzerland–EU adequacy decision. The underlying models (provided by Anthropic and Cohere) are accessed as part of the AWS Bedrock managed service; AWS does not use Bedrock inputs or outputs to train its models. By using the Service, you acknowledge that data relevant to your queries (including company names, amounts, and transaction summaries) may be processed by this AI infrastructure as described in our Privacy Policy and Subprocessors list.

Three uses of AI, three regimes. In every case described here, the models concerned are Mast Finance's own. The third-party model providers we access through AWS Bedrock (Anthropic, Cohere) are contractually barred from using your data to train or improve their models; nothing in this section creates an exception to that. (a) Running the Service. Mast Finance runs its models on your Customer Data to provide the Service to you: document recognition, entry categorisation, reconciliation, anomaly detection, forecasting. This is the very purpose of the Service and requires no separate authorisation. (b) A model dedicated to you. Mast Finance may train, fine-tune, or parameterise a model of its own whose outputs benefit only your organisation. Such a model, its weights, and its derivatives are siloed to your organisation, are not made available to any third party, and are deleted together with your Customer Data. (c) The shared model improvement programme. Mast Finance training its own models on examples drawn from your data, where the resulting improvements benefit its other customers, requires your organisation's express, optional authorisation, given in the application by an owner or administrator, disabled by default and deemed refused in its absence. Refusing or revoking it has no effect on your price, your features, or your Service. Where enabled, only training examples that have first been irreversibly anonymised are used: no names, no addresses, no account or identification numbers, and amounts reduced to orders of magnitude. What remains are patterns, not your accounting. Revocation takes effect immediately for all future extraction; examples already anonymised are, by that anonymisation, no longer personal data and are not affected. The authorisation, its version, its timestamp, and its author are recorded in your organisation's consent history.

8. Acceptable Use

Your use of the Service is subject to the Acceptable Use Policy (AUP). Mast Finance may suspend or restrict access to prevent harm, investigate misuse, or comply with legal obligations.

9. Fees, Billing, and Renewal

9.1 Plans and billing periods

Paid access is sold as a subscription to a plan. When you subscribe, you choose the plan and the billing period, either monthly or annual. The billing period you choose is the term of the subscription.

Negotiated plans (including practice and enterprise arrangements) are governed by the Order Form or written agreement signed for them. Where such a document exists, it prevails over this section.

9.2 Automatic renewal

Your subscription renews automatically at the end of each billing period for another period of the same length, and the renewal is charged to the payment method on file, at the price then in force for your plan and billing period. This continues until the subscription is cancelled.

We send a renewal reminder at least 7 days before the renewal date. Your payment history is available in your billing settings, where each invoice can be downloaded as a PDF.

9.3 Cancellation

You may cancel at any time from the billing settings in the application. You may also request cancellation by writing to contact@mastfinance.io from the account owner's address or that of an authorised administrator. No notice period applies.

Cancellation takes effect at the end of the current billing period: you keep access to paid features until that date, and no further renewal is charged. Fees already paid for the current period are not refunded. Mast Finance may grant a refund at its discretion in individual cases; see the Refund and Cancellation Policy.

After the paid period ends, the account enters the lifecycle described in §13 and in the Data Retention & Account Deletion Policy: your Customer Data remains readable and exportable for 30 days, personal data is anonymised at Day 30, and the remaining financial data is permanently purged at Day 90. Cancelling therefore starts that clock — export a complete copy of your Customer Data before it runs out. We send export reminders to the billing or contact address on the account around Day 20 and again around Day 25, but running the export remains your responsibility.

9.4 Taxes

Prices are shown and charged in Swiss francs. Mast Finance Sàrl is not currently registered for Swiss VAT, so the price displayed is the amount charged, with no VAT added. Should Mast Finance become VAT-registered, VAT will be added to the displayed price and shown separately before you confirm any payment, and this section will be updated accordingly.

9.5 Price changes

We may change the price of a plan. A price change never affects the period you have already paid for. We will give you at least 30 days' written notice before a price change applies to a renewal of your subscription, so that you can cancel before it takes effect if you do not wish to continue.

9.6 Changes to your subscription

You may upgrade at any time; the upgrade takes effect immediately and the price difference for the remainder of the current period is charged on a pro-rata basis by our payment processor.

You may move to a lower plan where your usage allows it. Because plans carry limits (including the number of users), a change to a lower plan may require you to reduce usage first, and the application will tell you what must be reduced. A change to a lower plan takes effect at the end of the current billing period.

9.7 Failed payments and non-payment

If a renewal payment fails, our payment processor retries the charge and we notify you. If payment has still not succeeded after approximately seven days, your account becomes read only: you and your users keep access to your data, including export, but can no longer record new entries.

If the account is still unpaid thirty days after it became read only, we send a final written notice to the billing or contact address on the account.

If the account is still unpaid sixty days after it became read only, the subscription is cancelled. Your Customer Data then follows the lifecycle described in §13 and in the Data Retention & Account Deletion Policy: it remains recoverable and exportable for 30 days, personal data is anonymised at Day 30, and financial data is purged at Day 90.

You can restore full access at any point before cancellation by settling the outstanding amount.

9.8 Free and complimentary access

Mast Finance may grant free access to the Service, including beta access and access granted with an invitation code. Free access is granted at our discretion and for the period we state. No payment is taken for free access, and no refund arises from it. Free access is governed by §9.9.

9.9 Free trials and free tiers

Mast Finance may offer free trials, beta access, or free-tier plans at its discretion. During any free or trial period:

• the Service is provided "as is", as described in §12 and §14;
• Mast Finance may limit features, usage, storage, or support;
• Mast Finance may terminate or modify free access at any time without liability;
• all other provisions of these Terms apply, including data protection, acceptable use, and limitation of liability.

Upon expiry of a free trial, access to paid features will cease unless you subscribe to a paid plan. Customer Data then follows the same lifecycle described in §13 and in the Data Retention & Account Deletion Policy: it stays available for export during a grace period, personal data is anonymised at Day 30, and financial data is purged at Day 90.

10. License Compliance, Verification, and Misuse

10.1 Accuracy Obligation

You must provide accurate information relevant to pricing metrics, including number of users, legal entities, and company size.

10.2 Verification

Mast Finance may reasonably verify compliance with these Terms.

10.3 True-Up and Back-Billing

If underpayment or misuse is identified, Mast Finance may invoice retroactive fee differences, verification costs, and interest as permitted by Swiss law.

10.4 Material Breach

Intentional misrepresentation or circumvention of pricing metrics constitutes a material breach. Mast Finance may immediately suspend access, terminate the agreement, and pursue all available legal remedies.

11. Confidentiality

Each party agrees to protect the other's confidential information with reasonable care and to use it solely for performing or receiving the Service under these Terms.

12. Availability and Maintenance

The Service is provided on an "as available" basis. Mast Finance operates it with reasonable care and endeavours to minimise disruption and to give advance notice of scheduled maintenance where practicable, but does not commit to any specific level of availability.

Availability targets, support response times, and any associated remedies such as service credits exist only where Mast Finance has agreed them in writing with a customer, in a signed Order Form or a separate service level agreement. Absent such a written agreement, no availability target, no support response time and no service credit applies.

Support is provided by email at contact@mastfinance.io.

13. Term and Termination

Except as provided in §10.4, either party may terminate for material breach not remedied within 30 days of written notice. Upon termination or account deletion, Customer Data follows the lifecycle set out in the Data Retention & Account Deletion Policy:

• your access to the Service will cease;
• Day 0: account deletion is requested by writing to contact@mastfinance.io from the account owner's address. Before we confirm the deletion we offer you a complete export of your Customer Data, which you may decline in writing. A complete export can also be downloaded at any time before deletion via Settings > Data Export.
• Grace period (Day 0 to Day 30): your data remains fully intact and the account can be recovered.
• Day 30: individual personal data is anonymised and the tenant is archived; recovery is no longer possible.
• Day 90: all tenant-scoped financial data is permanently purged. Only a minimal tenant record (company name and subscription metadata), anonymised audit logs, and Mast's own Stripe billing records are retained, as required for Mast's 10-year bookkeeping obligation under CO Art. 958f.

You remain responsible for retaining your own accounting records for the statutory period under Swiss law.

14. Warranties and Disclaimers

Except as expressly stated, the Service is provided "as is" without warranties of any kind, including implied warranties of merchantability, fitness for a particular purpose, and non-infringement.

15. Limitation of Liability

To the maximum extent permitted by applicable law:

• Mast Finance shall not be liable for indirect, incidental, consequential, special, or punitive damages.
• Aggregate liability shall not exceed the greater of (a) the total fees paid in the 12 months preceding the claim and (b) CHF 500.

Nothing excludes liability for death or personal injury caused by negligence, fraud, or any other liability that cannot be excluded under Swiss law.

16. Indemnification

You agree to indemnify Mast Finance from third-party claims arising from your Customer Data, misuse of the Service, or breach of these Terms.

17. Force Majeure

Neither party shall be liable for failure or delay caused by circumstances beyond reasonable control, including acts of God, war, pandemics, or failures of third-party infrastructure.

18. Assignment

You may not assign your rights without Mast Finance's prior written consent, except in connection with a merger or acquisition. Mast Finance may assign these Terms upon written notice.

19. Notices

Notices shall be given in writing by email. Notices to Mast Finance: contact@mastfinance.io. Notices to you: the email address associated with your account.

20. Changes to These Terms

Mast Finance may update these Terms at any time. Continued use after any update constitutes acceptance. We update the version number and effective date shown at the top of this document on every change, so that you can tell when the Terms have changed. The current version is always available at /terms.

21. Governing Law and Jurisdiction

These Terms are governed by Swiss law. The parties submit to the exclusive jurisdiction of the courts of Lausanne, Switzerland. The CISG is excluded.

22. Severability

If any provision is found invalid, it shall be modified to the minimum extent necessary or severed. The remaining provisions continue in full force.

23. Waiver

No failure or delay in exercising any right constitutes a waiver. No waiver shall be effective unless in writing.

Mast Finance Sàrl — Rue Centrale 15, 1003 Lausanne, Switzerland — contact@mastfinance.io