Sign in to your Government Gateway or GOV.UK One Login.
Add Self Assessment (and VAT if you need Making Tax Digital VAT).
Wait for activation — first-time users may need an activation code by post.
Use the same user ID and password in QuickTaxFiler when you submit.
QuickTaxFiler helps you complete Self Assessment and supplementary forms. If you have questions, use chat or email support@quicktaxfiler.co.uk.
Start a return