Compliant invoices, in minutes.
InvoStaq validates tax logic, schemas, and recipient IDs in under 200ms, right inside your native interface. Two minutes to set up, zero portal switching, and zero custom code. Keep non-compliant data out of government registries and keep your cash flow moving.
Native ERP plugins · Peppol BIS Billing 3.0 · EN 16931
VALIDATION
Most providers tell you an invoice failed. We tell you before you send it.
Every invoice gets one of three outcomes, in real time, inside the system your team already uses.
Valid. Sent, and the delivery status written back to your ERP.
Never leaves your system. "Buyer VAT number is missing the country prefix" — and the field to fix.
Possible duplicate, unusual tax rate, split invoice. Held for a person.
From invoice to intelligence in seconds
One platform connects your ERP to the Peppol network while AI validates, delivers and analyzes every invoice automatically.
Invoice created
Your team creates an invoice in Odoo, Dynamics 365, Sage, Xero or any ERP. InvoStaq syncs it automatically, with zero manual exports.
No portals. No manual XML. No complexity.
Your VAT return and your invoices should agree.
Every document that goes through the network is cross-referenced against what you declared. Discrepancies surface before an audit does, not during one.
Invoice-to-submission matching
Every invoice in your ERP checked against what actually reached the network. Nothing quietly fails to send.
VAT category reconciliation
Rates, exemption codes and tax category mappings validated against local and EU requirements.
Audit-ready reporting
Structured reconciliation reports for internal review, external audit, or a tax authority request.
One integration. Every mandate you invoice into.
Receiving and issuing are separate obligations with separate dates. Most businesses are caught by the first one.
New mandate, new rule pack. Your integration does not change.
The invoices nobody had time to check.
Every document that passes through is also read for what it says, not just whether it is valid. Your team sees the exceptions; it doesn't have to go looking for them.
Duplicates
The same invoice, submitted twice, flagged before anyone pays it.
VAT irregularities
Rates that don't match the goods, the jurisdiction, or the counterparty's status.
Outliers and patterns
Line items and supplier behaviour that don't look like the last twelve months.
And a read-only dashboard for the people who just need to know. Status of every document, full audit trail, and the evidence behind it — without anyone in finance learning a new system or being given something they can break.
Runs where your invoices already are.
Native plugin
Dynamics 365 · OdooInstalls inside the ERP. Validation results, warnings and fixes appear as native messages — no new portal, no new logins.
Direct integration
SAP S/4HANA · Business OneConnects over REST. No ABAP, no kernel changes, no middleware project.
REST API and webhooks
Everything elseAny other ERP, accounting system or custom stack.
Everything is documented. Nothing is gated.
API reference, error taxonomy and webhook events, public at docs.invostaq.com. Sandbox keys start with sk_test_ — no real invoices are delivered.
$ curl -H "x-api-key: sk_test_…" \
https://api.sandbox.invostaq.com/api/invoices/send
→ 200 OK "networkStatus": "Processing"Peppol is the rail. InvoStaq is what checks the invoice before it gets on it.
Implementation
From first call to live.
Sandbox
Run your own invoices through it and see what would have failed.
Connect
We map your fields and load the rules for the countries you invoice into.
Go live
Real traffic through the validation layer, statuses written back to your ERP.
What Our Clients Say
Businesses trust InvoStaq to eliminate compliance risk from every invoice.
“InvoStaq's API bridge allowed us to hit our ZATCA Phase 2 compliance milestones in Riyadh without having to completely rebuild our SAP Business One.”