The verdict in three sentences
A Magento-to-headless B2B migration costs between 40,000 and 90,000 EUR (net) in 2026, depending on catalogue size, customer count and integration complexity. The project pays off through lower Magento TCO, a performance gain and the end of accumulated technical debt. Budget 5 to 7 months, including SEO redirects and customer account migration.
Why leave Magento in B2B
Magento is still powerful but heavy: Adobe Commerce licence costs, demanding hosting, risky updates and penalising load times. Headless (decoupled front end, API-first commerce back end) flips the logic.
| Criterion | Magento (Adobe Commerce) | Headless B2B |
|---|---|---|
| Annual licence | 22,000 - 120,000 EUR/yr | 0 - 30,000 EUR/yr by stack |
| Hosting | 12,000 - 40,000 EUR/yr | 4,000 - 18,000 EUR/yr |
| Load time | 2.5 - 5 s | 0.5 - 1.5 s |
| Updates | Heavy, risky | Continuous, isolated |
| Evolution cost | High | Moderate |
| Technical debt | Growing | Controlled |
Performance is not cosmetic: in B2B, a fast portal cuts recurring buyers' ordering time and reduces support tickets.
What the migration budget covers
| Item | 2026 range (EUR net) | Note |
|---|---|---|
| Audit + target architecture | 5,000 - 10,000 | Stack choice, cutover plan |
| Headless front (Next.js/Nuxt) | 15,000 - 35,000 | B2B journeys, accounts, pricing |
| Catalogue migration | 6,000 - 14,000 | Products, variants, media |
| Customer + history migration | 5,000 - 12,000 | Accounts, price lists, orders |
| Redirects + SEO | 3,000 - 7,000 | 301s, hreflang, sitemaps |
| ERP/PIM/payment integration | 6,000 - 18,000 | Reconnecting the flows |
The critical item is migrating customer accounts and their price lists: losing an order history or a negotiated list immediately creates commercial disputes.
Mini case study
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Julian, e-commerce manager at a B2B distributor in Berlin, pays 34,000 EUR/yr in Magento licence and 22,000 EUR/yr in hosting, i.e. 56,000 EUR/yr of platform base. His site loads in 3.8 s and generates many slowness tickets.
After a headless migration at 68,000 EUR (net), his annual TCO drops to ~20,000 EUR (reduced licences and hosting), i.e. 36,000 EUR saved per year. The migration pays for itself in under 2 years, before counting the conversion lift from moving to 1.1 s load times and the drop in support tickets.
FAQ
Is headless always cheaper to run? Often, thanks to no heavy licence and lighter hosting, but it depends on the chosen stack. The real gain is reduced technical debt and evolution costs.
Will we lose our SEO when migrating? No, if the 301 redirect plan is rigorous and URLs are kept or mapped. Budget 3,000 to 7,000 EUR (net) to secure SEO.
Can we keep our ERP and PIM? Yes, headless reconnects to your existing systems via API. Reconnecting the flows costs 6,000 to 18,000 EUR (net).
How long does the migration take? Budget 5 to 7 months for a full project with customer and catalogue migration. A phased cutover by segment reduces risk.
Must we migrate everything at once? No, a phased approach (catalogue, then customers, then advanced features) limits risk and smooths the load. It is often the recommended route.
Let's scope your project. Magento-to-headless B2B migration, indicative budget 40,000 - 90,000 EUR net, 5-7 month timeline with customer migration and SEO. 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.
