Imputation has enabled genomic selection in commercial livestock, taking advantage of a more cost effective Low Density (LD) panel, increasing the number of genotyped animals and hence adoption. A 5K LD panel has been employed commercially in New Zealand.  This study investigated the accuracy of imputation using a new 15K panel being developed by the International Sheep Genomics Consortium in four scenarios across two multi-breed New Zealand sheep populations. The prototype panel resulted in higher values of imputation accuracy compared with the current LD panel (5K), which will benefit the implementation of genomic selection for the sheep industry in New Zealand.