Modern finance teams operate in an environment where accuracy, speed, and adaptability define success, and traditional incremental budgeting often falls short in keeping pace with rapid business change. This applied course introduces learners to zero-based budgeting (ZBB) principles and guides them through building budgets from the ground up, structuring and coding departmental costs in Excel, and using AI-powered tools such as ChatGPT or Excel Copilot to speed up variance detection and narrative preparation. Through a combination of guided videos, hands-on Excel labs, and reflective Coach dialogues, learners connect budgeting theory with real-world execution and build the skills needed to analyze and manage costs with greater precision.