Get in touch
Spotted an error, got feedback, or want to suggest a new calculator? We'd love to hear from you. Calculio is run by a small team, and every message is read by a real person.
What to contact us about
Report an error in a calculator
Spotted a figure that looks wrong, or a formula that doesn't match current HMRC, DVLA or NHS rules? Let us know which calculator and what you found, and we'll check it.
Suggest a new calculator
Have a UK calculation you can't find anywhere, or think we're missing? Tell us what it should work out and we'll consider it for a future update.
Content corrections
Found something unclear, outdated, or incorrect in one of our guides or FAQs? We'd rather fix it than leave it, so please point us to the exact page.
Media and press enquiries
Working on a story that references UK tax, motoring or personal finance figures? Get in touch and we'll do our best to help.
Privacy or data protection queries
Questions about our Privacy Policy, Cookie Policy, or a request relating to your rights under UK GDPR, can be sent to us directly.
General questions
Anything else about Calculio, how we work, or how a specific calculator was built is welcome too.
Frequently asked questions
Want to know more about how we work first? Read our About page.