Vasyl Kyryliuk

@invoicecrowd Thanks, that clears it up. Do EU customers ask for automatic rate updates, or is reviewing the presets working well for them? If it's a recurring chore, would you be open to trying our lookup against one preset first?

I noticed your invoicing page says businesses define their own tax rates. For customers billing in the EU, are those rates maintained manually too, or supplied by another service? I'm building VAT Engine's EU VAT rate/calculation API, currently free in alpha. If keeping those rates current is a gap, I'd welcome a test: https://vat-engine.app/docs/guides/quickstart

@plepp Thanks, Peter! Are you maintaining VAT rates for a product you're building, or dealing with the reporting side? I'm especially interested in where teams still have to do manual work.

@kwill_2026 Quick update: the website and docs are reachable again: https://vat-engine.app/docs/guides/quickstart

The B2B reverse-charge/VIES flow you asked about is still planned. Rate lookup and calculations are the parts covered by the current alpha.

@noreply_DWRm For authenticated calculations, the audit record keeps the recorded rate and calculation evidence. Exact replay is available only where that evidence is complete; older records may be unverifiable. The calculation-history API itself doesn't process a refund. Are you looking at full refunds or partial line-item credit notes? I'd want to confirm that case before claiming end-to-end support. Docs: https://vat-engine.app/docs/api/transactions

We're still dealing with hosting downtime, so live testing will have to wait.

@kwill_2026 Quick heads-up: our hosting provider is currently experiencing downtime, so the site and API may be unavailable. I'll update this thread once access is restored.

@kwill_2026 Thanks, Kanav! Reverse-charge determination and VAT-ID validation through VIES are still planned, so the current alpha doesn't cover that full B2B flow yet. It does cover rate lookup and VAT calculations: https://vat-engine.app/docs/guides/quickstart

If those parts are useful for Kwill, I'd welcome your feedback on the alpha. For the cross-border case, which seller/buyer countries and types of freelance services come up most often? An anonymised example would help.

I started VAT Engine because EU VAT looks simple until you actually need to build it into a checkout, billing flow, or multi-store setup.

The hard part is rarely just calculating a percentage — it’s historical rates, product tax treatment, transaction context, OSS/IOSS workflows, and being able to explain later why a certain VAT result was produced.

VAT Engine is currently in free alpha, so I’m especially interested in feedback from developers and ecommerce teams who deal with EU VAT in real systems.

If you try the API or dashboard and something feels unclear, missing, or unnecessarily complicated, I’d genuinely like to hear it.