Food prices fell by 1.3% in March mainly due to cheaper fruit and vegetables.
Statistics New Zealand grocery and meat prices were also down.
Tomatoes were the cheapest they've been in four years at $2.76 a kilogram, apple prices were down by a third and the cost of kumara fell 19%.
In the year to March, food prices fell by 0.4% led by lower prices for dairy products.
Food prices make up nearly 19% of the Consumers Price Index.