Find Collation of a SQL Server Instance

To find Collation of a SQL Server Instance using T-SQL run this query:

SELECT SERVERPROPERTY('COLLATION')

sql_server_instance_collation_tsql

To find Collation of a SQL Server Instance using SQL Server Management Studio (SSMS):

Right Click on a SQL Server Instance in Object Explorer and choose 'Properties':

sql_server_instance_collation_ssms_properties

On the General tab you can see SQL Server Instance collation:

sql_server_instance_collation_ssms_view