Аннотация:The article presents the innovative method of cost planning with taking into account the priorities of expense items, and the active online service which enables the method usage in a variety of client applications. Widest area of the service usage is the budgeting, although the service allows flexible and dynamic planning of any resource costs. The important innovation for users is ability to specify the expected resource amount and the requests for resource as numerical segments, receive results in the same form, and then clarify the plan in the course of its implementation.