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TaxGuardHub
Universal EU e-invoice XML validator with zero PII retention
Instantly validate e-invoices against official 2026 Schematron rules across 7 EU jurisdictions. In-memory SaxonC processing with zero data storage and automatic PII masking.
Hi Product Hunt! 👋
I built TaxGuardHub after spending way too many hours trying to understand why an e-invoice XML was rejected by government tax portals.
With European mandates rolling out (Romania's e-Factura, Germany's XRechnung, Polish KSeF, Peppol), developers and finance teams are hit with cryptic Schematron logs and raw regex patterns. Standard XML tools struggle because ISO Schematron requires full XSLT 2.0/3.0 support, which usually means spinning up heavy local Java utilities.
Key things I focused on:
1. In-memory validation: Powered by SaxonC/GraalVM running official schemas for 7 EU jurisdictions.
2. Privacy first: Invoices contain sensitive corporate and financial data. Nothing is ever saved to disk or databases, and PII is automatically masked.
3. Fast diagnosis: Pointing out the exact line and element that caused the rejection, with actionable guidance.
You can test any invoice XML directly in your browser without registration.
Would love to get your thoughts and hear about any edge cases or tax rules you’ve had trouble validating!
About TaxGuardHub on Product Hunt
“Universal EU e-invoice XML validator with zero PII retention”
TaxGuardHub was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #136 on the daily leaderboard. Instantly validate e-invoices against official 2026 Schematron rules across 7 EU jurisdictions. In-memory SaxonC processing with zero data storage and automatic PII masking.
On the analytics side, TaxGuardHub competes within Fintech, Privacy and Developer Tools — topics that collectively have 579.3k followers on Product Hunt. The dashboard above tracks how TaxGuardHub performed against the three products that launched closest to it on the same day.
Who hunted TaxGuardHub?
TaxGuardHub was hunted by Gleb M. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of TaxGuardHub including community comment highlights and product details, visit the product overview.
Gleb M