Business Case
The official Business Case brief for the 2026 edition.
Open Business Case (PDF)WINTER
CHALLENGE
The 2026 edition has concluded. Explore the Business Case, event recordings and past tasks.
WinterChallenge brings young people together to explore real-world problems, develop solutions and experience the international IEOx community.
AN ONLINE
CHALLENGE FOR
YOUNG PEOPLE
Created by members and alumni of the IEOx Community, WinterChallenge offers an opportunity to discover the kind of problems explored at the International Economics Olympiad.
Participants work across borders, learn from one another and put their reasoning into practice. WinterChallenge began in 2021. Its format has evolved, while its international community and practical approach have remained at its heart.
Welcome
¡Bienvenido!
Bienvenue!
Bem-vindo!
Karibu!
HOW THE 2026
BUSINESS CASE
WORKED
The 2026 WinterChallenge centred on one official competitive round: the Business Case. Teams developed solutions, presented them in English and evaluated other teams’ work. Leading teams then presented their ideas in an online final before an international jury.
01
Group phase
Teams analysed the case, prepared their recommendations and submitted their presentations.
02
Peer grading
Participants reviewed and evaluated the work of other teams.
03
Read the 2026 regulationsOnline finals
Finalist teams presented their solutions before an international jury.
2026 EVENT
TIMELINE
Five key moments shaped the 2026 edition.
Opening Ceremony
Business Case announced.
Case submission
Peer-grading assignments distributed.
Peer-grading deadline
Teams completed their evaluations.
Business Case Finals
Finalist teams presented their solutions.
Closing Ceremony
Results announced.
2025 PARTICIPATION IN NUMBERS
2,054registrations in 2025
61countries and territories in 2025
47+instructors supporting teams in 2025
Figures from the WinterChallenge 2025 Final Report.
TASK ARCHIVE
Explore the available tasks and reference PDFs from the 2021–2026 editions.
SIX EDITIONS
OF THE CHALLENGE
Follow the journey from the first WinterChallenge to the focused Business Case edition of 2026.
2021The beginning — the first WinterChallenge, organised by the IEOx team.
2022More than 1,000 registrations for the second edition.
2023More than 1,600 participants from 66 countries.
2024The community grew beyond 1,700 registrations.
20252,054 registrations from 61 countries and territories.
2026A focused edition with one official Business Case round.
EVENT RECORDINGS
AND RESOURCES
Revisit the events and ideas that keep the WinterChallenge community moving.
2026 EVENT
RECORDINGS
Watch the three moments that opened, shaped and closed the 2026 edition.
WiConomics explainers
OFFICIAL RULES
AND REPORTS
Official information and reference materials for the WinterChallenge community.
IEO Articles of AssociationGENERAL
IEO Regulations of CompetitionGENERAL
WinterChallenge 2026 Annual RegulationsPDF · 2026
2026 Technical Information & Grading ParametersPDF · 2026
Business Case Grading CriteriaPDF
WinterChallenge 2025 Final ReportPDF · 2025
The 2026 documents describe that edition. Rules for a future edition will be published when confirmed.
THE 2026 TEAM
AND ADVISERS
Educators, alumni and volunteers helped bring the 2026 edition to life.
Christos BenosGeneral Manager
Eleni KisiriCommunications, Expansion
Spyros TerzisOperations, Creativity
Aysel MammadovaCommunications
Farangiz DjuraevaAdvisor
Anna BondarevaWebsite, Platform
Sofia VlasovaCommunications
John KantolasTeam Member
Catherine FlorouTeam Member
Eva ShtreysTeam Member
Miguel CubelTeam Member
Nikoletta PispaCommunications
Christos LoukasWiConomics Author
Germano T. MartinelliAdvisor
Loukas ZachilasAdvisor
Patrick EganAdvisor
Ivana ČulinaAdvisor
Alexandr ZhitkovskyAdvisor
CONTACT
THE TEAM
For questions about WinterChallenge, its materials or future editions, contact the team. Please allow one or two business days for a reply.
[email protected]