Power BI vs Tableau — Business Intelligence Platform Comparison [2026]

Power BI Pro is $14 per user per month and Power BI Premium Per User is $24, both paid yearly; Fabric capacity, which lets viewers read content without a paid licence, is priced per capacity. Tableau Cloud starts at $15 per user per month, billed annually, for its entry licence; Creator and Explorer licences, which author and edit content, cost more.

Compare on your own mix of authors and viewers, not on the entry price. A team with a few authors and many readers pays very differently from a team where everyone builds dashboards. Add the cost of data preparation, governance add-ons and training before you compare totals.

Power BI's model runs on a tabular engine. It rewards a star schema of fact and dimension tables, and DAX time-intelligence functions make period-over-period finance measures straightforward. DAX takes longer to learn, but the measures it produces are reusable and easier to govern.

Tableau allows looser relationships between tables, and Level of Detail expressions such as FIXED, INCLUDE and EXCLUDE handle many calculations with less code. Tableau Prep Builder is a separate, visual data-preparation tool. Teams with heavy financial modelling tend to prefer DAX; teams exploring irregular data tend to prefer Tableau.

Power BI is built into Microsoft 365: reports embed in Teams and SharePoint, Excel connects to Power BI datasets, Microsoft Entra ID (Azure AD) handles sign-in and security groups, and sensitivity labels carry through. It also reads Azure, Fabric and Dynamics 365 data natively.

Tableau has been part of Salesforce since 2019, so it fits Salesforce-centred stacks and Slack, and it runs in several clouds or on your own servers. If your company avoids committing analytics to one cloud vendor, that portability matters.

Both support row-level security. In Power BI it is defined with DAX filters and managed through Microsoft Entra ID groups; in Tableau it is built with user functions and calculated fields, with sign-in through SAML or other identity providers. Tableau Catalog, part of the Data Management add-on, adds lineage across data sources.

Dashboards are rebuilt, not converted: the two tools use different calculation languages. A realistic migration inventories workbooks first and archives the unused ones, rebuilds data sources as Power BI semantic models, rewrites calculated fields and LOD expressions as DAX measures, rebuilds visuals in Power BI's own idioms, ports row-level security, and runs both tools in parallel until the numbers match.