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 |
| Exceptions held with type and reason | No | Yes |
| Post expense | Yes | No |
| Tax filings (303, 390, 347) | Yes | No |
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.
Want to see it with your company's documents? I will show you how each line is matched against its purchase order and delivery note. Request a demo with your own invoices
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 and a person approves it, it exports a CSV ready to import into A3.
- If there's an exception, it holds the invoice with the reason visible. The invoice does not enter A3 until a person resolves it.
- The firm posts the already-validated batch at close.
Compliance 2027-2028
- Mandatory e-invoicing: structured XML from 6 October 2027 for companies with turnover above EUR 8 million and from 6 October 2028 for everyone else (AEAT calendar).
- Verifactu: invoices with a QR code during 2027 (RD 1007/2023, as amended by RDL 15/2025: before 1 January 2027 for corporate income tax payers and before 1 July 2027 for everyone else; the Ministry of Finance has announced a delay to October 2028 that is not yet in the BOE).
- 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. .
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 is a CSV or Excel file that A3 imports.
- Is it useful for accounting firms?
- Especially. It cuts the hours of "matching" invoices before posting, the classic bottleneck.
- How much does it cost?
- Try it with your own invoices, no implementation fee.
A3 books. ininvoice validates.
Try it with your own invoices, no implementation fee.