About
Factinvo is a free, open-to-all suite of financial tools built specifically for freelancers and independent contractors. Our mission is simple: give self-employed people the same quality of financial tools that large companies take for granted — without subscriptions, accounts or hidden fees.
Everything runs in your browser. Your invoice data, salary figures and tax calculations never leave your device — we have no servers storing your financial information.
Accuracy: Every tax figure is sourced from official government publications (BOE, HMRC, BMF, BOFiP, SPF Finances, etc.) and updated annually. See our audit log for source references.
Free forever: Factinvo is funded through unobtrusive advertising (Google AdSense) and voluntary donations (Ko-fi). We will never require payment or registration to use our core tools.
Have a question, found an error in a tax calculation, or want to suggest a new tool or language? We'd love to hear from you.
We aim to respond within 2–3 business days. For tax figures that need correcting, please include the page URL and a link to the official source — we take data accuracy seriously.
Factinvo's calculators and guides are provided for informational purposes only and do not constitute legal, tax or financial advice. Tax laws change frequently and vary by individual circumstances. Always consult a qualified tax professional or official government sources before making financial decisions.