Equestrian
Initiative
Your activities define your modules.
Your organisation is audited only against the modules that match what it actually does. Each Activity Module adds its own criteria on top of the Core Mandatory Layer, which applies to every SEI organisation.
Eight modules. Your organisation will be audited only against the module (s) applicable to your activities..
Stables & Equestrian Centres
Facilities where horses are accommodated, kept, cared for or handled.
Training & Coaching
Competent instruction, responsible training methods and participant safety.
Breeding & Stud Operations
From responsible breeding decisions to youngstock development.
Horse Therapy & Care Services
Horse wellbeing and beneficiary protection in equine-assisted services.
Leisure, Tourism & Equestrian Activities
Trail riding, equestrian holidays, carriage and working-equine tourism.
Events & Competitions
The complete event lifecycle, from local competitions to major events.
Transport & Logistics
The complete journey — road, air, sea and multimodal transport.
Equestrian Products & Services
Suppliers of products and professional services to the sector.
SEI Standard — Introduction
The introduction to the SEI Standard: purpose, structure, how the Core Mandatory Layer and the Activity Modules combine, and how conformity is demonstrated.
Start your SEI journey
Complete the registration form and the SEI Team will contact you to confirm your activities, identify the applicable Activity Modules and guide you through the next steps.
The future starts here
Stay connected with the future of equestrianism.
SEI
SEI — Sustainable Equestrian Initiative. An evidence-based sustainability certification standard created for the equestrian world, with horse wellbeing at its centre. Established 2023, The Netherlands.
SEI | Sustainable Equestrian Initiative
Address: Nicolaes Maestraat 2, Office 213
1506 LB Zaandam, The Netherlands
Telephone: 0031-(0)85-301 0650
Dutch Chamber of Commerce: 67691951
EU VAT (VIES): NL857133147B01
© 2026 Sustainable Equestrian Initiative. All rights reserved.
Responsible equestrianism. Proven for the future.