
MTD Client Onboarding: A Checklist for Accountants (April 2027 and April 2028 Waves)
In short: To onboard clients for HMRC's next Making Tax Digital waves, segment your book by qualifying income, contact April 2027 clients during 2026, standardise the records layer across clients, use the 2026-27 waiver to fix habits, and keep penalty explanations simple. Over £30,000 in 2025-26 means MTD from April 2027; over £20,000 in 2026-27 means April 2028.
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