Contact Finance & Tax Tools

Found a bug, have an idea for a new tool, or need help using Finance & Tax Tools? Send us a message - we read everything and usually reply within two business days.

What can you contact us about?

Our Finance Calculators

Every tool below runs entirely in your browser — nothing you type is ever uploaded to a server.

Frequently Asked Questions

Do all finance tools work offline?
Yes. The Loan Calculator, Mortgage Calculator, Compound Interest Calculator, ROI Calculator, and Percentage Calculator run entirely in your browser. Once the page has loaded, no connection to our servers is needed for calculations.
Can I report a wrong result or suggest a feature?
Please do — it helps us improve. Include the tool name, the inputs you entered, and the result you expected. We usually fix confirmed issues within a few days.
Is my data shared when I use the contact form?
No. Your message is used only to answer your inquiry and is never shared with third parties. There is no newsletter and no spam — you hear from us only when we reply.
Are the finance tools available in other languages?
Yes. The finance hub is also available in Czech — the Czech version of Finance & Tax Tools includes the loan, mortgage, compound interest, ROI and percentage calculators, and more translations are added over time.