HMRC issues new registration warning to tax advisers ahead of November deadline

Tax advisers affected by the latest phase of the new mandatory registration scheme have until November 18 to sign up with HMRC.

MoneyHMRCIt said the second phase window was now open11:39, 18 Aug 2026HMRC has given an update on mandatory changes "designed to raise standards".‌The tax authority said on Tuesday that registration was now open for tax advisers in the second phase of the new Modernising and Mandating Tax Adviser Registration (MMTAR)