The article proposes revised minimal standards for the description of new taxa within the class *Halobacteria*, a group of halophilic archaea. These standards are based on polyphasic taxonomy and incorporate recent advancements in molecular and genomic techniques. Key revisions include the retention of previously required and some recommended minimal standards, while introducing changes to align with new methodologies. The 16S rRNA gene and the *rpoB* gene are highlighted as important molecular markers for identification. Phylogenomic analysis based on concatenated conserved, single-copy marker genes is emphasized for inferring taxonomic status. Genome-relatedness indexes, such as average nucleotide identity (ANI), digital DNA–DNA hybridization (dDDH), and average amino acid identity (AAI), are crucial for rigorous comparisons among close relatives. The article also provides detailed guidelines for cultivation, isolation, morphology, growth conditions, nutrient requirements, biochemical activities, polar lipid profiles, phylogeny, and genomics. The aim is to provide comprehensive guidance for the description of new taxa, ensuring accuracy and consistency in haloarchaeal taxonomy.The article proposes revised minimal standards for the description of new taxa within the class *Halobacteria*, a group of halophilic archaea. These standards are based on polyphasic taxonomy and incorporate recent advancements in molecular and genomic techniques. Key revisions include the retention of previously required and some recommended minimal standards, while introducing changes to align with new methodologies. The 16S rRNA gene and the *rpoB* gene are highlighted as important molecular markers for identification. Phylogenomic analysis based on concatenated conserved, single-copy marker genes is emphasized for inferring taxonomic status. Genome-relatedness indexes, such as average nucleotide identity (ANI), digital DNA–DNA hybridization (dDDH), and average amino acid identity (AAI), are crucial for rigorous comparisons among close relatives. The article also provides detailed guidelines for cultivation, isolation, morphology, growth conditions, nutrient requirements, biochemical activities, polar lipid profiles, phylogeny, and genomics. The aim is to provide comprehensive guidance for the description of new taxa, ensuring accuracy and consistency in haloarchaeal taxonomy.