Contact

Report an error, a rate change or a question by email.

[email protected]

When you report an error

• Which calculator or salary page, and the values you entered
• The result you got and the result you expected
• Your source, such as a payslip line, a GOV.UK page or an HMRC letter

Please hide names, National Insurance numbers, tax references and addresses on any payslip or letter you attach. Email is handled under the privacy policy.

This is not a helpline for your own tax position. For that, contact HMRC or a qualified accountant.