High Low Method
Calculate fixed and variable costs using the high-low method with the highest and lowest activity levels. Separate mixed costs for cost accounting and budgeting analysis.
About This Calculator
The High Low Method Calculator helps cost accountants and business managers separate mixed costs into fixed and variable components using the highest and lowest activity levels. This cost accounting technique is essential for budgeting, cost control, pricing decisions, and break-even analysis across manufacturing, service, and retail businesses.
The high-low method formula uses two data points from your cost history. First, determine the variable cost per unit by dividing the change in total cost by the change in activity level: Variable Cost Per Unit = (Highest Activity Cost - Lowest Activity Cost) / (Highest Activity Units - Lowest Activity Units). Then calculate total fixed cost by subtracting the total variable cost at either point from the total cost at that point: Fixed Cost = Highest Activity Cost - (Variable Cost Per Unit × Highest Activity Units). Finally, the cost model Total Cost = Fixed Cost + Variable Cost Per Unit × x can estimate total costs for any production volume within the relevant range.
While the high-low method is simple and quick, it only considers two extreme data points. For more accurate cost estimation, consider supplementing with scatter plot analysis or regression analysis. The method works best when costs are relatively linear within the relevant range of activity.
Regional Notes
India (IN): Indian cost accountants use the high-low method for factory overhead analysis, cost sheet preparation, and budgeting under standard costing systems. Results are typically reported in Indian Rupees (₹).
United States (US): US management accountants apply the high-low method for cost-volume-profit analysis, flexible budgeting, and activity-based costing. Results are reported in US Dollars ($) following GAAP cost classification standards.
United Kingdom (UK): UK cost accountants use the high-low method for marginal costing, contribution analysis, and management reporting under UK GAAP or IFRS. Results are reported in British Pounds (£).
Frequently Asked Questions
What is the high-low method in cost accounting?
The high-low method is a cost accounting technique that compares total costs at the highest and lowest production activity levels to estimate fixed costs, variable costs, and a cost function for finding total cost at any production volume.
How do you calculate variable cost per unit using the high-low method?
Variable cost per unit is calculated as (Cost at highest activity minus Cost at lowest activity) divided by (Highest activity units minus Lowest activity units). This gives you the cost per additional unit of production.
How do you calculate fixed cost using the high-low method?
Fixed cost is calculated by taking the total cost at either the highest or lowest activity level and subtracting the product of variable cost per unit and the activity level at that point: Fixed cost = Highest activity cost minus (Variable cost per unit multiplied by Highest activity units).
What is the cost model formula from the high-low method?
The cost model formula is: Total Cost = Fixed Cost + (Variable Cost Per Unit multiplied by Number of Units). This allows you to estimate total costs at any production volume within the relevant range.
What is the major disadvantage of the high-low method?
The main disadvantage of the high-low method is that it oversimplifies the relationship between cost and production activity by only considering the two extreme data points, ignoring other factors that can impact cost behavior such as inflation and seasonality.
Is the high-low method the only way to estimate fixed and variable costs?
No, there are other methods such as scatter plot analysis, account analysis, and regression analysis. However, the high-low method provides the simplest approach requiring only two data points.
What is variable cost per unit if highest cost is $1000 at 100 units and lowest cost is $700 at 50 units?
The variable cost per unit is $6 and the total fixed cost is $400. The cost model would be $400 + $6 multiplied by the number of units.
Can the high-low method be used in India, US, and UK accounting?
Yes, the high-low method is universally applicable across all countries including India, the US, and the UK. It is a standard cost accounting technique taught globally and used in management accounting for budgeting, cost control, and decision-making.