The verdict in three sentences
In distribution, the line that quietly destroys margin is not purchase price but badly managed stock: stockouts, overstock and inventory discrepancies. A vertical solution (50-200 EUR/user/month) is enough when your processes fit the standard; a custom build (30,000-70,000 EUR) pays off as soon as multi-warehouse, automatic replenishment and your margin rules fall outside the boxes. The target figure is the same either way: 99% inventory accuracy and -15% tied-up capital.
What inventory software really costs in 2026
The sticker price tells you nothing: the three-year total cost, including integration and data migration, is what matters.
| 2026 option | Entry cost | Recurring cost | Process fit |
|---|---|---|---|
| Shared spreadsheet | 0 EUR | Hidden time | Weak, frequent errors |
| Generic stock SaaS | 40-90 EUR/user/month | Subscription | Medium |
| Vertical distribution tool | 50-200 EUR/user/month | Subscription + support | Good on standard |
| Custom module | 30,000-70,000 EUR | 12-18% maintenance/yr | Total |
| Full integrated ERP | 60,000-150,000 EUR | 15-20% /yr | Total, heavier |
For a distributor with 8-15 users, a vertical solution runs around 9,600-36,000 EUR/year; custom becomes competitive from year two if your business rules are specific.
The features that actually make money
Not every building block is equal. Here is the concrete impact of the main ones.
| Feature | What it prevents | Typical 2026 gain |
|---|---|---|
| Real-time multi-warehouse | Stockouts and blind transfers | -20 to -30% stockouts |
| Barcode / mobile scan | Entry and picking errors | 99% inventory accuracy |
| Automatic replenishment | Overstock and rush orders | -15% tied-up capital |
| Cycle counting | Annual shutdown and downtime | 0 warehouse-down days |
| Real-time line margin | Undetected loss-making sales | +2 to 4 margin points |
The mobile scan + automatic replenishment pair repays the project fastest: it hits human error and trapped cash at the same time.
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Mini case study
Thomas runs a building-materials distributor in London: 3 warehouses, 12 users, 3.2M EUR of stock. He carries roughly 480,000 EUR of overstock and 6% stockouts. A custom module at 55,000 EUR (amortised over 3 years, i.e. 18,300 EUR/yr + 8,000 EUR maintenance) cuts tied-up capital by 15%, releasing 480,000 EUR once, and drops stockouts to 2%. Counting only the released cash and 40,000 EUR/yr of recovered sales, payback lands in under 12 months.
FAQ
Vertical solution or custom to start? If your processes are standard, go vertical (50-200 EUR/user/month): fast start, low risk. Custom is justified once your margin or replenishment rules are genuinely specific.
How long to deploy? Budget 6-10 weeks for a multi-warehouse + scanning scope, data migration included. A full ERP rises to 4-6 months.
Do barcodes really change accuracy? Yes: you typically move from 90-94% to 99% inventory accuracy, which removes most picking disputes and accounting discrepancies.
Can stock connect to accounting and e-commerce? Yes, via API or connectors. Budget 3,000-12,000 EUR of integration depending on the systems to link (accounting, POS, online store).
What gain on tied-up capital should I expect? A well-tuned automatic replenishment targets -15% of stock value without hurting service level, often within the first months.
Let's scope your project. Tell us your warehouse, user and SKU counts: we price vertical vs custom with a 3-year TCO. 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.
