PurposeThe purpose of this study is to examine branding consistency for wine labels. The front label on wine bottles is important for identifying the brand and aiding purchase. Many brands are part of brand families, with the sub-brands linked to the overall brand family. This research provides an overview of how the front label varies across product portfolios of wine brands, noting the importance placed on branding elements and the level of consistency in their use across the brand portfolio.Design/methodology/approachThe authors propose and test a new method to measure branding consistency on labels from the same brand family. Two coding frameworks were created. The first recorded the incidence of brand elements and wine attributes. The second coded wine labels within a company’s portfolio based on the consistency of various brand elements. A total of 3,000 branding elements and wine attributes from 300 wine labels were examined across 60 wine brands from a list of Australian wineries.FindingsGrape variety, brand name and region are used across >90% of wine labels. Branding is presented more prominently than wine attributes. Sub-brand, region, price and variety did not influence branding consistency. Logo presence, logo image on label and colour elements contribute to the greatest variation in branding consistency across a product portfolio.Originality/valueThis study proposes and tests a novel method to measure branding consistency on wine labels and explores the extent to which consistent branding is used across product portfolios. Descriptive research is the first step to theory building. This study provides industry norms for attribute use and a measure of branding consistency for product portfolios giving valuable descriptive knowledge.