Free tools for freelancers and small businesses in Spain
Email signatures, VAT, income tax and payroll calculations, quotes and QR codes. Free, no sign-up and nothing sent to any server: everything runs in your browser.
Available
Why use Kyros Utils
Free, no sign-up
Every tool is free, with no limits, no accounts and no watermarks on what you download.
Your data stays in your browser
Calculations, signatures, quotes and QR codes are generated on your computer or phone. We don't send or store what you type.
2026 tax data
VAT, withholding, payroll income tax and social security contributions follow the official 2026 tables from the Spanish Tax Agency and Social Security.
Frequently asked questions
Are the tools really free?
Yes. There's no paid version, no sign-up and no usage limit. The site is funded by advertising.
Do you store the data I type?
No. Everything is calculated in your browser and nothing is sent to a server. Some tools can remember your details, but only on your own device.
Do they work for all of Spain?
Yes, for the common tax territory. The Basque Country and Navarre have their own income tax, so the net salary calculator isn't exact there.
How often is the tax data updated?
We review rates and tables every January and whenever the Tax Agency or Social Security publish changes during the year.