Essential Biodiversity Variables (EBVs) have emerged as a crucial tool for monitoring biodiversity change and provide a framework for standardized and integrated data that align with national and global conservation targets. While EBVs have static definitions, they offer considerable flexibility in their specific data products, allowing regions with diverse geographies, biota, and cultures to develop unique implementation strategies. To guide EBV data products for Japan, we compare data availability and gaps with Finland, a country with similar environments. We review the status of primary data for EBVs in terrestrial ecosystems in these two countries and then compare them with Europe. Phenology and model-based approaches have emerged as cost-effective methods covering multiple EBV classes and assessing changes across diverse biomes and temporal scales. We found that Japan had adequate or surplus data for many EBV classes, particularly for species distributions, phenology, and environmental disasters, and we also note additional data unique to Japan. However, we also identified gaps in Japan such as data for products in Genetic Composition, Species Traits, and Ecosystem Structure EBV classes relative to Finland and Europe. We then discuss how EBVs can contribute to calculate indicators for Japan, such as the “30 by 30,” and highlight the remaining data gaps to realize them. Lastly, we provide our perspectives on calculating EBVs at the national scale, focusing on Japan. As countries and regions develop EBV products, comparative regional analyses help elucidate key commonalities and differences that can inform more coordinated and effective responses to the global biodiversity crisis.