Business Central is licensed per user per month in two tiers. Essentials covers finance, purchasing, sales and order processing, inventory, warehousing, projects and reporting, which is the full scope for most organisations. Premium adds manufacturing and service management. Team Member licences, for staff who approve, enquire or enter time rather than transact, cost a fraction of a full user and are frequently under-used.
Finance & Operations sits at a much higher per-user rate and carries a minimum commitment, which is one of the clearest signals about who it is designed for.
In both cases licensing is the smaller number in year one. Implementation covers discovery, configuration, data migration, integrations, testing and training, and the variables that move it are entity count, warehouse and manufacturing complexity, how many systems need connecting, and the state of your existing data.
Budget for the second year too. Licensing recurs, support is normally a monthly retainer or a block of hours, and most organisations make further changes within twelve months once they see what else the platform can automate.