Variable Cost Definition Variable Cost Definition: Variable cost is a cost that varies, in total, in direct proportion to changes in the level of activity. A variable cost is constant per unit. Other Related Accounting Articles: Fixed Cost Definition Step Fixed Cost Variable Costing Definition Variable Overhead Efficiency Variance Definition Cost Volume Profit Analysis High-Low Method Direct Costing Definition Marginal Costing Definition Step Variable Cost Definition Activity Base Definition Recommended Books ! Or Download E accounting book in MS-word format for just 20 $ - Click here to Download Tweet Pin It Sana Ahmed Accounting Definitions, Cost Accounting, Managerial Accounting, Managment Accounting No Comments Home » Accounting Definitions & Cost Accounting & Managerial Accounting & Managment Accounting » Variable Cost Definition About The Author Sana Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Save my name, email, and website in this browser for the next time I comment.