The verdict in three sentences
For a group receiving 1,800 supplier invoices per month, an AI and OCR solution costs 6,100 to 15,250 EUR to set up (4 to 10 million FCFA on our grid), then 0.1 to 0.3 USD per document. With 85% of fields extracted automatically, data entry time drops from about 180 hours to under 60 hours a month, and duplicate payments almost disappear. The project succeeds when the approval workflow and the Sage or SAP integration are designed before choosing the extraction tool.
How the processing chain works
Invoices arrive by email, as PDFs, as phone photos or as scanned paper. OCR reads the document, an AI model identifies supplier, number, date, net amounts, VAT (23% standard rate in Ireland) and order lines, then matches the invoice to the purchase order and goods receipt. Compliant invoices go to approval, the rest are flagged to the accountant with the field at issue.
| Step | Before (manual entry) | After (AI and OCR) | Estimated 2026 gain |
|---|---|---|---|
| Receipt and filing | Email and paper, sorted by hand | Dedicated inbox, automatic filing by supplier | 20 hours per month |
| Header entry | 3 minutes per invoice | Automatic extraction, 30-second check | 75 hours per month |
| Line entry | 3 minutes per invoice | Line extraction for 85% of invoices | 60 hours per month |
| PO and receipt matching | Spot checks | Systematic three-way match | Duplicates and variances caught |
| Approval | Paper sign-off, 6 to 10 days | Online workflow by amount threshold, 2 days | Late payment interest avoided |
| Accounting integration | Re-keying into Sage or SAP | Journal entry generated automatically | Zero re-keying |
Budget and options in 2026
Amounts are a 2026 order of magnitude, excluding VAT, converted from our FCFA price grid (1 EUR = 655.957 FCFA). Dublin agency rates for the same scope are often 1.5 to 2 times higher. The per-document cost applies to solutions using a pay-per-use extraction service.
| Option | Set-up (EUR) | Usage cost | Timeline | Best for |
|---|---|---|---|---|
| Extraction only + Excel export | 6,100 to 8,400 | 0.1 to 0.2 USD per document | 4 weeks | Under 800 invoices per month |
| Extraction + approval + Sage | 9,150 to 12,200 | 0.15 to 0.25 USD per document | 6 to 8 weeks | 800 to 3,000 invoices per month |
| Extraction + approval + multi-entity SAP | 12,950 to 15,250 | 0.2 to 0.3 USD per document | 8 to 10 weeks | Groups with several companies |
| Supplier portal (online submission) | 2,300 to 4,600 | Included | 3 weeks | Over 200 active suppliers |
| Maintenance and retraining | 150 to 380 per month | Ongoing | All options |
Compliance matters too: GDPR applies as soon as invoices contain personal data (sole traders, named contacts), and Irish Revenue requires accounting records to be kept for six years. The EU's ViDA package and upcoming e-invoicing mandates make an end-to-end digital AP chain a sound investment.
Mini case study
Aoife, financial controller of a distribution group in Dublin (3 companies, 420 staff), receives 1,800 invoices per month for about 1.92 million EUR of purchases. Her team spends 180 hours a month on them, at a loaded cost of 35 EUR per hour.
- Chosen solution: extraction, approval and SAP integration for 10,670 EUR, usage at 0.2 USD x 1,800 = 360 USD, about 330 EUR per month, maintenance at 230 EUR per month.
- Remaining time: 1,800 one-minute checks plus 270 invoices handled manually at 6 minutes = 57 hours. Gain: 123 hours x 35 EUR = 4,305 EUR per month.
- Duplicate and erroneous payments avoided, estimated at 0.05% of purchases: 960 EUR per month.
- Net gain: 4,305 + 960 - 330 - 230 = 4,705 EUR per month. Payback: 10,670 / 4,705 = about 2.3 months.
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FAQ
How much does an AI OCR solution for supplier invoices cost?
6,100 to 15,250 EUR to set up in 2026 depending on integration (Excel, Sage or SAP), plus 0.1 to 0.3 USD per document and 150 to 380 EUR per month for maintenance.
What automatic extraction rate can we reach?
About 85% of invoices are extracted without correction after a month of learning on your top 50 suppliers. Handwritten invoices remain the weak spot, at 50 to 60% success.
Does the solution handle Irish VAT and our chart of accounts?
Yes, VAT rates (23%, 13.5%, 9%), reverse charge on EU purchases and your chart of accounts are configured at set-up. Entries arrive in Sage or SAP ready to post.
How long does the project take?
From 4 weeks for simple extraction to 8 to 10 weeks for a multi-entity group on SAP, including testing on 300 real invoices.
Our suppliers send poor-quality photos, is that a blocker?
No, pre-processing fixes skew and contrast. Beyond 10% unreadable documents, a supplier portal at 2,300 to 4,600 EUR solves the problem at source.
Let's scope your project. Tell us your monthly invoice volume, ERP and number of entities: we will price a solution between 6,100 and 15,250 EUR, delivered in 4 to 10 weeks. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
