Quiet, document-first VAT work

Interface Automation helps UK finance teams prove that VAT on their invoices and returns matches the rules they intend to follow — before a query forces the conversation.

Why we exist

VAT errors rarely announce themselves. They hide in coding habits, incomplete supplier files, and partial exemption shortcuts that looked fine last year. We built Interface Automation to give finance teams an independent check that starts with documents, not with software demos.

We work from Abermule with clients across the United Kingdom. Engagements are scoped to named periods and material streams. Pricing is informational until we have seen enough of your ledger to quote honestly.

How we stay useful

  • Findings written for finance and advisors, not for a product roadmap
  • Sample sizes explained up front so nothing feels like a black-box scan
  • Clear limits: we do not file returns, represent you before HMRC, or replace your accountant
Bright workspace used for careful document review

People behind the reviews

Practitioners who have lived inside purchase ledgers, return workings, and awkward HMRC follow-ups.

Portrait of a professional woman in an office setting

Helena Croft

VAT review lead

Former in-house tax accountant focused on return integrity, input tax evidence, and HMRC query responses for mid-sized UK traders.

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Marcus Ellery

Evidence and recovery specialist

Builds invoice trails and recovery tests for purchase ledgers where blocked items and incomplete supplier files create risk.

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Priya Nair

Partial exemption analyst

Works with mixed suppliers on residual pools, special methods, and annual adjustments that stay readable year-round.