## CIS + VAT basics
– Know when reverse charge applies; check customer status.
– Keep correct wording on invoices (materials, labour split if needed).
## Pitfalls
– Charging VAT when reverse charge should apply.
– Missing CIS verifications; wrong deductions.
## Hygiene
– Reconcile CIS suffered/deducted monthly.
– Keep evidence of customer status and contracts.
## Actions
– Update invoice templates.
– Train staff on reverse charge decision tree.
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