New Zealand's KFC, Taco Bell and Pizza Hut stores have helped drive millions in profits for global owner Restaurant Brands

The multi-national company's reported 5.4-percent sales growth in the year ending December - reaching 1.39 billion dollars.

The Kiwi division's recorded the highest net profit - at 41.7 million - and the Australia and California markets had losses.

Restaurant Association President Mike Egan says convenience is a big factor behind people buying fast food.

He says people are super-busy, often stuck in traffic - and part of their daily stress is the question of what's for dinner.