Contact

Email [email protected].

Reporting a calculation error

Accuracy is the whole point of this calculator, so error reports are the most useful thing you can send. To help us reproduce it, please include:

• The share link for your calculation (it contains your inputs, so check you are happy to send them)
• The figure you expected, and where it came from: your payslip, Form 130 or your employer
• If a rate or rule has changed, a link to the official notification or Act

What we cannot help with

We cannot give personal tax advice, review your payslip or file returns. For that, speak to your employer's payroll team or a chartered accountant.