VAT Leak CheckFind VAT leaks in your Shopify order history
A free audit of cross-border order VAT. Upload your orders CSV and see which orders look wrong against current value limits.
Coming soon. The audit tool is still being built; the page below describes what it will do. Nothing to upload yet.
Thanks. The full version is not ready yet; we counted your interest anonymously. Nothing was charged and no data was sent.
The problem
Tax rules at checkout can change without notice. Value limits for the EU IOSS scheme (EUR 150), the UK (GBP 135), Australia (A$1,000) and New Zealand (NZ$1,000) apply at checkout. Note the EUR 150 figure is also the EU customs-duty limit that is changing in 2026; that change concerns customs duty, not VAT. When rules shift, merchants usually find out weeks later during bookkeeping or VAT filing.
Nobody rechecks historical orders against current rules, so leaked VAT and overcharges build up unnoticed.
The solution
Upload your Shopify order CSV export. VAT Leak Check will:
- Check every order against the current value limit for its destination country
- List leaked and overcharged orders with the reason
- Show month by month when the rule behaviour changed (planned)
- Export the results for your accountant (planned)
Planned features, not yet available.
100% browser-based. Your data never leaves your computer. Delete personal columns before uploading if you prefer.
How it works
- Export. Download the orders CSV from Shopify (Taxes, Shipping Country and Lines columns required).
- Upload. Drag and drop or select the file. Optional: remove customer name and address columns first.
- Analyze. The rules engine compares each order value with the value limits: EUR 150 (EU), GBP 135 (UK), A$1,000 (AU) and NZ$1,000 (NZ).
- Review. See flagged orders, tax differences and the trend chart.
- Export. Download a results CSV: order ID, destination, value, tax charged, tax expected and reason.
Key features
Multi-country
EU IOSS, UK, Australia and New Zealand thresholds, each with source and date.
Drift detection
A monthly trend chart shows when VAT behaviour changed.
Privacy-first
Processed in your browser. No data storage, no server transmission, no tracking.
Free
No subscription, no upsell. Auditing should be accessible.
Accountant-ready
Export a detailed CSV for reconciliation or professional review.
Informational
Every rule cites its source (HMRC, EU, ATO, IRD) and effective date.
Free to use
Free
No subscription. No premium tiers. Anonymous counts only (see privacy below).
Legal and privacy
Informational tool only, not tax advice. Each VAT rule will cite its source and effective date. Consult a tax professional before acting on these results.
Browser-only. Your CSV is processed entirely in your browser. Your orders are never sent to our servers, stored remotely or shared.
Anonymous counts only. This page counts visits and button clicks, and the traffic source tag in the link (?src=). No cookies, no IP address, no name or email, no order data. We do not collect your email yet; the notify button will only ask for it with a separate consent line.
No Shopify affiliation. Built for Shopify order exports. Not endorsed by or affiliated with Shopify, Inc.