Most international visitors need a visa for India before travel. The standard route for exhibitors and trade visitors is the Government of India e-Business Visa (typically USD 80, multiple entry up to 1 year, processed in about 3–5 working days on indianvisaonline.gov.in); a 30-day e-Tourist Visa costs about USD 25 and a 1-year e-Tourist Visa about USD 40, but tourist visas are not the correct category for commercial exhibition activity. Nepal and Bhutan nationals do not need a visa, and Maldives nationals can obtain a visa on arrival. Apply at least 2 weeks before departure, carry a printed Electronic Travel Authorisation, and keep an invitation or ESFE registration confirmation with your documents.
Estimated cost: Varies by visa type and nationality (check official site).
Processing: Varies by nationality; apply several weeks before travel.
Apply online on the Government of India e-Visa portal and carry a printed Electronic Travel Authorisation plus a copy of the organiser invitation or ESFE registration confirmation. Cheaper but not the correct category for exhibiting or conducting commercial business at the show — use the e-Business Visa for stand staffing and contract talks.
Official