About Sumwise

Sumwise is a set of free, fast calculators for money and everyday questions, run by the Sumwise team. Everything runs in your browser, with no sign-up.

Where the numbers come from

Tax and VAT rates are taken from official government sources; each one below shows when it was last checked. Each result is an estimate: your payslip or tax return can differ.

• UK income tax and NI, checked 2026-10-28
• US federal tax, checked 2026-11-03
• German income tax, checked 2026-10-28
• French income tax, checked 2026-11-03
• Irish income tax, checked 2026-11-03
• Australian income tax, checked 2026-10-28
• VAT rates, checked 2026-11-03

Contact

Spotted an error or want a new calculator? A contact address is coming soon.