For a Short Visit to Sri Lanka, travelers should obtain an ETA with effect from 1st of January 2012.
Diplomatic and Official passport holders are exempt from ETA processing fee, only when their applications are submitted through the state agencies such as Ministries, Statutory Bodies, Sri Lanka Overseas Missions etc.
At the arrival applicant may be granted 30 days ETA with double entry facility and double entries can be made from the date of initial arrival (Within given 30 days). The balance period of the 30 days of the initial entry will be granted for the second visit to Sri Lanka.
For more information, visit http://www.immigration.gov.lk