Tax, VAT & MTD

What has to be reported, when, and what Making Tax Digital changes.

These answers provide general information, not advice tailored to your circumstances. Rules can change and exceptions may apply — speak to the CASS team before making a tax, accounting or financial decision.

If you should have registered earlier, HMRC can treat the registration as effective from the date it should have happened. That can mean VAT is due on sales even if you did not charge customers VAT at the time.

Reviewed by Paul Barnes, Founder, Cloud Accounting Support Services · Last reviewed 29 September 2026

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