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Use the contact details below to report incorrect rates, suggest improvements or raise editorial concerns.
For corrections, rate errors or data-quality feedback: mskippergriffiths@gmail.com
Please include a link to the relevant GOV.UK or HMRC source when reporting a rate discrepancy so we can verify and update promptly.
Rate or threshold corrections — if a published HMRC rate has changed and is not yet reflected on this site.
Factual errors — if methodology, description text or worked examples contain errors.
We cannot provide personalised tax advice or carry out Self Assessment calculations on your behalf.
The homepage calculator is the fastest way to turn this guidance into a concrete monthly take-home and tax reserve estimate.