The most expensive VAT mistake is usually invisible
Penalties and late filings get the attention. The expensive problems start much earlier, in master data and manual corrections outside the ERP.
When people think about VAT risk, they often think about penalties.
Late filings. Incorrect rates. Missed deadlines. But the most expensive problems usually start much earlier, and they are often invisible.
A small inconsistency in master data. A manual correction outside the ERP. A reporting extract that differs from the ledger.
None of these look dramatic on their own. Until they appear in multiple reports, multiple countries, or multiple audit requests.
From small data issue to big effort
What starts as a small data issue can quickly become:
- reconciliation effort
- reporting delays
- audit questions
- loss of confidence in the numbers
This is why leading organisations increasingly focus on preventing issues at source rather than correcting them later.
Because the cheapest error to fix is the one that never leaves the ERP.
Originally published on the itax4apps LinkedIn page on 26 June 2026.