Terms of Service
Last updated: April 2026
Operator: Tom Silas Helmke, c/o Online-Impressum #4746, Europaring 90, 53757 Sankt Augustin, Germany
Email: tshfm78@gmail.com
1. Scope and Acceptance
By accessing or using summatio.com ("Website"), you agree to these Terms of Service. If you do not agree, do not use the Website.
2. Description of Service
The Website provides free online calculators for financial, tax, and real estate calculations. All calculations are performed entirely in your browser (client-side). No data is transmitted to or stored on any server. Optional paid features ("Pro") are processed through LemonSqueezy.
3. No Professional Advice
THE CALCULATORS AND THEIR RESULTS DO NOT CONSTITUTE FINANCIAL ADVICE, TAX ADVICE, INVESTMENT ADVICE, LEGAL ADVICE, OR ANY OTHER FORM OF PROFESSIONAL ADVICE. Use does not create an advisory or fiduciary relationship. The operator is not a licensed financial advisor, CPA, enrolled agent, or attorney.
4. Disclaimer of Warranties
ALL CONTENT AND RESULTS ARE PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, AND NON-INFRINGEMENT.
5. Limitation of Liability
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE OPERATOR SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL, OR PUNITIVE DAMAGES, INCLUDING FINANCIAL LOSSES, TAX DEFICIENCIES, PENALTIES, OR ANY OTHER DAMAGES ARISING FROM USE OF THE WEBSITE.
IN NO EVENT SHALL THE OPERATOR'S TOTAL LIABILITY EXCEED EUR 50.00 OR THE AMOUNT PAID FOR PRO FEATURES IN THE PRECEDING 12 MONTHS, WHICHEVER IS LESS.
6. US Tax Disclaimer
US tax calculations do not account for all aspects of the Internal Revenue Code. Results are NOT suitable for tax return preparation and do NOT replace a CPA or Enrolled Agent. The operator is not registered with the IRS.
7. Pro Subscription
Pro features: Annual (EUR 19.99/year) or Lifetime (EUR 49.99). Payment via LemonSqueezy. No VAT (§ 19 UStG). Cancel anytime through LemonSqueezy. License Keys are personal and non-transferable.
8. No Investment Recommendation
Nothing on this Website constitutes a recommendation to buy, sell, or hold any financial products. Past returns are no guarantee of future results.
9. Intellectual Property
All content is protected by copyright. Personal, non-commercial use only. Systematic scraping is prohibited.
10. Privacy
See our Privacy Policy.
11. Governing Law
These Terms are governed by the laws of the Federal Republic of Germany. EU consumer protection regulations apply for EU consumers. Online dispute resolution: https://ec.europa.eu/consumers/odr
12. Severability
If any provision is invalid, the remaining provisions remain in full force and effect.