Frequently asked questions about participation, registration, and guest fees for IOI 2026.
Each country sends a team of up to four students, selected through its own national olympiad in informatics.
To find out how your country selects its team, contact your national IOI representative. Their details are listed here: ioinformatics.org/page/members/7
The official registration system for IOI 2026 is now open. Invitation letters can be obtained directly through this system after completing the required steps.
Please note that the final deadline for registration is 15 June 2026. Registration of all delegation members including participants, guests, and committee members is handled by the team leader.
Open Registration SystemThe guest fee is 1,500 EUR per person and covers accommodation (double occupancy) and all meals for the duration of IOI 2026.
Payment deadlines and additional details will be emailed to registered guests.
Single room upgrades are available for an additional 1,000 EUR, subject to availability.