The verdict in three sentences
A MICE agency running 25 conferences a year of 300 to 3,000 attendees spends around EUR 70,000 a year on registration platforms billed per event or per registrant. A custom tool at EUR 40,000 to 80,000, combining registration, hotel booking, badges and sponsor invoicing, pays off from the second season. Beyond the savings, the agency regains ownership of its attendee data, which changes its ability to resell its conferences year after year.
What third-party platforms really cost
The director of an agency in Strasbourg, a hub for European institutions much like Brussels or Geneva, works for medical societies, professional federations and EU bodies. For each conference, the team rebuilds the event on a platform, re-enters rates (member, non-member, student, early bird), exports registrants to Excel for hotels, then to badge software, and invoices sponsors separately in the accounting tool.
| Item per conference (1,000 attendees) | Off-the-shelf platform | Custom tool |
|---|---|---|
| Platform fees | EUR 2,000 to 15,000 per event or EUR 3 to 6 per registrant | Included |
| Online payment commission | 1.5 to 3% + platform fees | 1.4 to 2.9% (payment provider only) |
| Event setup | 1 to 2 days | 2 to 4 hours (template duplication) |
| Hotel block management | Separate spreadsheet | Built-in module, quotas per hotel |
| Badge printing | Export, then third-party software | Direct generation, QR code |
| Sponsor and exhibitor invoicing | Separate accounting tool | Quotes, invoices and reminders built in |
| Data ownership | Shared with the vendor | Exclusive to the agency |
Modules of custom conference software
The typical scope covers the full cycle, from registration opening to the post-event report.
| Module | Scope | 2026 budget (estimate) |
|---|---|---|
| Registration and rates | Categories, early bird, promo codes, groups, attendance certificates | EUR 10,000 to 18,000 |
| Attendee payment and invoicing | Card, bank transfer, purchase order, compliant invoices | EUR 6,000 to 12,000 |
| Accommodation | Hotel blocks, quotas, rooming lists | EUR 5,000 to 10,000 |
| Badges and access control | On-site printing, QR code, session scanning | EUR 6,000 to 12,000 |
| Sponsors and exhibitors | Packages, floor plan, invoicing | EUR 6,000 to 13,000 |
| Programme and speakers | Abstract submission, scheduling, attendee app | EUR 5,000 to 10,000 |
| Dashboard and exports | Registration tracking, revenue per event, client report | EUR 2,000 to 5,000 |
| Maintenance and hosting | Fixes, changes, scaling on opening days | EUR 1,000 to 2,000 per month |
The budget varies mostly with scientific abstract management and the number of languages. For a trilingual European conference (French, English, German), add EUR 3,000 to 6,000.
When custom is not worth it
Below 8 to 10 events a year, or for events under 200 attendees, an off-the-shelf platform stays more cost-effective. Custom makes sense when volume is stable, formats repeat year to year and clients demand full white-labelling.
| Organiser profile | 2026 recommendation |
|---|---|
| Fewer than 10 events a year | Off-the-shelf platform |
| 10 to 20 events, varied formats | Off-the-shelf platform with API to your tools |
| 20 or more events, recurring formats | Custom tool |
| Medical conferences with abstracts and CME credits | Custom or specialist vendor |
| Clients requiring full white-label | Custom tool |
Mini case study
Marc, director of a MICE agency in Strasbourg, runs 25 conferences a year for 24,000 attendees in total. He pays an average EUR 70,000 a year in platform fees, and his team spends 45 days a year re-keying data (about EUR 18,000 of loaded time).
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He invests EUR 70,000 in a custom tool with EUR 1,500 monthly maintenance. Year 1: 70,000 + 18,000 = EUR 88,000, against EUR 88,000 of current costs, so break-even. Year 2: EUR 18,000 of maintenance only against EUR 88,000, or EUR 70,000 saved. Payback arrives during the second season, as planned.
FAQ
How long does it take to build conference management software?
Plan 4 to 6 months for the full scope. It is wise to launch the registration module on a pilot conference of 300 to 500 attendees before moving the whole season.
Will the tool handle the load when registration opens?
Yes with auto-scaling infrastructure. Expect 1,000 registrations in the first hour for a 3,000-attendee conference.
Can we invoice sponsors directly from the tool?
Yes, the sponsor module generates quotes, invoices and reminders, then exports to your accounting software. It accounts for EUR 6,000 to 13,000 of the budget.
Is attendee data GDPR compliant?
Yes if consent is collected at registration and data is purged after 3 years of inactivity. Hosting in the European Union is recommended.
What if we change provider?
The contract should require source code delivery and a reversibility clause. With hosting in your name, the transition takes 2 to 4 weeks.
Let's scope your project. Send us your conference calendar, registration volumes and current tools: we will price software between EUR 40,000 and 80,000 with a 4 to 6 month plan. 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.
