The scope of cost accountancy includes costing, cost accounting, cost control, budgeting, and cost auditing. Costing involves collecting and classifying costs and allocating expenses to production. Cost accounting deals with classifying, recording, allocating, summarizing, and reporting costs. Cost control sets targets, tracks actual costs and production, analyzes variances, and takes steps to address unfavorable variations. Budgeting prepares comprehensive operational and financial plans. Cost auditing verifies the accuracy of cost accounts and adherence to cost accounting plans.