New Zealand won the toss and elected to field first.
Sri Lankan batsman were out in a hurry as they looked to slog every ball out of the park but managed to reach 142 for 8 thanks to an unbeaten 81 by Angelo Mathews.
Thilakarathna Dilshan was the only other batsman to reach double figures as he made 28.
New Zealand reached the target in just 10 overs with 9 wickets to spare thus securing a 2 nil Victory in the 2 match series while Sri Lanka will lose their Number 01 ranking in T20’s.
Colin Munro hit the 2nd fastest T20 half century off just 14 balls.