About FreelancePay

FreelancePay builds free, accurate calculators for freelancers and self-employed workers: social security contributions (cuota de autónomos in Spain, recibos verdes in Portugal), self-employment tax in the US, and more.

Every calculator is backed by a tax model maintained for the current tax year, with figures verified against official sources (Seguridad Social, CIRS/CIVA, IRS). Tax rules change every year — we update the parameters without changing the code.

The site is free and monetized by advertising.

Questions or corrections? Contact us.