Terms of Use

Last updated: 25 May 2026

These Terms of Use ("Terms") govern your access to and use of openaccountants.com, our API and MCP server, the skill library, and related services (the "Service"), operated by OpenAccountants ("OpenAccountants", "we", "us") from Malta. By using the Service you agree to these Terms. If you do not agree, do not use the Service.

1. What OpenAccountants is

OpenAccountants is an open-source library of tax-computation "skills" — reference documents describing tax rules, rates, thresholds, and citations — intended to be used by AI agents and developers. Each skill carries a quality indicator showing whether it has been reviewed by a licensed practitioner.

2. Not professional advice

The Service and all skills are provided for general informational and computational purposes only. They are not tax, legal, accounting, or financial advice, and do not create a professional or client relationship between you and OpenAccountants or any contributor. You must have any output reviewed and signed off by a qualified professional licensed in the relevant jurisdiction before filing or acting on it.

3. No warranty

The Service is provided "as is" and "as available", without warranties of any kind, express or implied. Tax law changes frequently and skills may be incomplete, outdated, or incorrect — including rates, thresholds, and citations. A skill marked "research-verified" has notbeen signed off by a credentialed accountant. Even "accountant-verified" skills are reference material, not a guarantee of correctness for any particular situation. We do not warrant that the Service will be uninterrupted, accurate, or error-free.

4. Limitation of liability

To the maximum extent permitted by law, OpenAccountants, its team, and its contributors will not be liable for any indirect, incidental, special, consequential, or punitive damages, or for any loss (including taxes, penalties, interest, or professional fees) arising from your use of, or reliance on, the Service or any skill. Nothing in these Terms excludes liability that cannot lawfully be excluded.

5. Verifying accountants and contributors

If you contribute to or verify skills as a licensed practitioner:

(a) What verification means. You are reviewing open-source reference material against published guidance and current legislation for your jurisdiction. You are notreviewing any specific person's return, signing a filing, or forming a client engagement with anyone who later uses the skill.

(b) Public credit. Your name and professional credentials will be published publicly as the verifying/contributing accountant, as described in our Privacy Policy. You consent to this and confirm you are entitled to use the credentials you provide.

(c) Your warranties. You confirm you are a licensed practitioner in good standing in the jurisdiction(s) you verify, and that your contributions are accurate to the best of your professional knowledge at the time of submission.

(d) Contribution licence.Unless agreed otherwise in writing, contributions you submit are licensed under the project's open-source licence (AGPL-3.0), and you grant OpenAccountants a worldwide, royalty-free licence to publish, distribute, and adapt them as part of the Service.

(e) Paid engagements. Where you are engaged for paid review (for example through a freelance marketplace), the scope, fee, and deadline are governed by the specific contract for that engagement.

6. Open-source licence

The skill library is open source and licensed under the GNU Affero General Public License v3.0 (AGPL-3.0), with a commercial licence available on request. Your use of the library's content is subject to the applicable licence terms.

7. Acceptable use

You agree not to misuse the Service: no unlawful use; no attempts to disrupt, overload, or gain unauthorised access; no misrepresenting a skill's verification status or a contributor's involvement; and no use that infringes others' rights. We may suspend or terminate access for breach.

8. Accounts

You are responsible for your account and for keeping your login secure. Accountant accounts must use your real identity and accurate credentials.

9. Intellectual property

The OpenAccountants name and brand are ours. Skill content is governed by the open-source licence above. Other site content is owned by OpenAccountants or its licensors.

10. Third-party services

The Service links to and integrates with third parties (for example hosting providers, AI agents, and freelance marketplaces). We are not responsible for third-party services, and their own terms apply.

11. Indemnity

You agree to indemnify OpenAccountants against claims arising from your breach of these Terms or your unlawful or infringing use of the Service.

12. Changes

We may update the Service and these Terms from time to time. Material changes will be posted here with a new "last updated" date; continued use means you accept the updated Terms.

13. Governing law

These Terms are governed by the laws of Malta, and the courts of Malta have exclusive jurisdiction, subject to any mandatory consumer protections in your country of residence.

14. Contact

OpenAccountants — info@openaccountants.com. See also our Privacy Policy.