How to control incoming supplier invoices in A3 ERP
A3 ERP, A3CON and A3ECO (Wolters Kluwer) are the most widely used products in Spanish accounting firms and mid-sized SMEs. Solid accounting and tax modules. Line-by-line matching of inbound invoices against POs and delivery notes is not their focus. ininvoice covers that as a layer in front of A3.
A3 books. ininvoice validates.
| Task | A3 ERP | ininvoice |
|---|---|---|
| Capture invoice from email | Manual / extra module | Automatic Gmail |
| Line-by-line PO match | Not standard | Yes, pre-tax |
| Delivery note matching | Limited | Yes, partial receipts |
| Multi-criteria duplicate detection | By invoice number | Multi-signal |
| Tax validation (VAT / IRPF / tax ID) | No | Yes |
| Exception routing | No | By type |
| Post expense | Yes | No |
| Tax filings (303, 390, 347) | Yes | No |
| Practice / multi-client | Yes (A3 Despachos) | Multi-client via firm account |
Ideal for accounting firms on A3 Despachos
The sweet spot of this combination is the accounting firm that handles the books of several SME clients in A3CON or A3 Despachos. Today they spend hours reconciling invoices in spreadsheets before posting them to A3. With ininvoice in front, the matching runs on its own and A3 receives clean data.
More in accounts payable for accounting firms.
The A3 + ininvoice flow
- The client connects their mailbox to ininvoice.
- ininvoice captures, reads line by line, looks up the PO and the delivery note.
- If it matches, it exports a CSV ready to import into A3.
- If there's an exception, it routes the case to the client. The invoice does not enter A3 until it's resolved.
- The firm posts the already-validated batch at close.
Compliance 2026-2027
- Mandatory e-invoicing: structured XML from September 2026 for large suppliers.
- Verifactu: invoices with QR and hash from 2027.
- SII: A3 handles reporting. ininvoice accelerates clean data delivery.
Is your firm on A3 Despachos or A3CON?
Connect Gmail and match your real invoices against their POs and delivery notes. Start free — 20 documents, no card.
Frequently asked questions
- Does ininvoice replace A3?
- No. A3 stays your ERP and tax engine. ininvoice validates invoices before they enter A3.
- Does it work with A3CON, A3ECO and A3 Despachos?
- Yes. The export adapts to each environment (CSV or connector depending on the version).
- Is it useful for accounting firms?
- Especially. It cuts the hours of "matching" invoices before posting, the classic bottleneck.
- How much does it cost?
- Free plan: 20 documents per month. No card required, no commitment.