How to get First Day of next Year and Last Day of Next year in SQL

DECLARE @TRAVELYEARS INT = -1

SELECT      DATEADD(YEAR, DATEDIFF(YEAR, 0,

            DATEADD(YEAR, @TRAVELYEARS ,GETDATE())), 0),

            'First Day of Year'

UNION ALL

SELECT      DATEADD(MILLISECOND, -3,

            DATEADD(YEAR, DATEDIFF(YEAR, 0,

            DATEADD(YEAR, @TRAVELYEARS, GETDATE())) + 1, 0)),

            'Last Day of Year'

SET @TRAVELYEARS = 1

SELECT      DATEADD(YEAR, DATEDIFF(YEAR, 0,

            DATEADD(YEAR, @TRAVELYEARS ,GETDATE())), 0),

            'First Day of Year'

UNION ALL

SELECT      DATEADD(MILLISECOND, -3,

            DATEADD(YEAR, DATEDIFF(YEAR, 0,

            DATEADD(YEAR, @TRAVELYEARS, GETDATE())) + 1, 0)),

            'Last Day of Year'
Result Set:

2010-01-01 00:00:00.000 First Day of Next Year

2010-12-31 10:39:59.997 Last Day of Next Year

(2 row(s) affected)

                       

———————– ———————-

2012-01-01 00:00:00.000 First Day of Next Year

2012-12-31 10:39:59.997 Last Day of Next Year

(2 row(s) affected)