If you think the value of your dwelling is within 10% of an ATED threshold, you should complete a pre-return banding check form to ask HMRC to carry out checks on your property details and valuation, to see if you need to pay ATED.
Email HMRC to ask for this form in Welsh (Cymraeg).
Before you start
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You’ll need to fill in the form fully before you can print it. You cannot save a partly completed form, so HMRC recommend you gather all your information together before you begin to fill it in.