Fixed Costs and Variable Costs -Breakeven

Fixed Costs and Variable Costs -Breakeven

Simple Costing: Fixed vs. Variable Costs, Breakeven Point, and Profit Analysis

Understanding fixed costs, variable costs, breakeven point, and profit is crucial for pricing decisions and financial planning. Below is a breakdown with formulas, examples, and graphs.


1. Fixed Costs vs. Variable Costs

Cost Type Definition Examples
Fixed Costs (FC) Costs that do not change with production volume. Rent, salaries, insurance, depreciation.
Variable Costs (VC) Costs that vary directly with production volume. Raw materials, labor per unit, packaging.

Total Cost (TC) Formula

$$ TC = FC + (VC \times Q) $$
  • \(Q\) = Quantity produced/sold
  • \(VC\) = Variable cost per unit

2. Breakeven Point (BEP)

The breakeven point is where Total Revenue (TR) = Total Cost (TC), meaning no profit or loss.

Breakeven Formula

$$ BEP\ (in\ units) = \frac{FC}{SP - VC} $$
  • \(SP\) = Selling Price per unit
  • \(VC\) = Variable Cost per unit

Breakeven Revenue

$$ BEP\ (in\ \$) = BEP\ (units) \times SP $$

3. Profit Calculation

Profit occurs when Total Revenue > Total Cost.

Profit Formula

$$ Profit = (SP \times Q) - [FC + (VC \times Q)] $$


Or:

$$ Profit = (SP - VC) \times Q - FC $$

4. Graphical Representation

Breakeven Chart

Below is a cost-volume-profit (CVP) graph:

          | Revenue/Cost ($)
          |
          |   / Total Revenue (TR = SP × Q)
          |  /
          | / 
          |/________ Breakeven Point (BEP)
          |        /|
          |       / |
          |______/  |
          |    /   |
          |   /    |
          |  /     |
          | /      | Total Cost (TC = FC + VC × Q)
          |/_______|________________
          |        Fixed Cost (FC)
          |________________________
                     Quantity (Q)
%% Breakeven Analysis Graphgraph LR
graph LR
    axis[("Volume (Q) →")] -->|"Low"| Q1[Q=500]
    axis -->|"Breakeven"| Q2[Q=1,000]
    axis -->|"High"| Q3[Q=1,500]
    
    cost[("Cost/Revenue ($) ↑")] --> FC[FC=$10,000]
    cost --> TC[TC=FC + VC×Q]
    cost --> TR[TR=Price×Q]
    
    TR -->|"TR > TC → Profit"| Profit
    TC -->|"TR < TC → Loss"| Loss
    TR & TC -->|"TR = TC"| BEP["Breakeven Point"]
    
    style FC fill:#f5f5dc,stroke:#333
    style TC fill:#ffcccc,stroke:#333
    style TR fill:#ccffcc,stroke:#333
    style BEP fill:#ffff99,stroke:#333
graph LR
    FC[Fixed Cost] -->|+Variable Cost| TC[Total Cost]
    Sales[Total Revenue] -->|Breakeven| BEP((Breakeven Point))
    style FC fill:#f5f5dc,stroke:#333
    style TC fill:#ffcccc,stroke:#333
    style Sales fill:#ccffcc,stroke:#333
    style BEP fill:#ffff99,stroke:#333

Key Points:

  1. Fixed Cost (FC) is a horizontal line (doesn’t change with quantity).
  2. Total Cost (TC) starts at FC and slopes upward (due to VC).
  3. Total Revenue (TR) starts at 0 and increases with sales.
  4. Breakeven Point (BEP) is where TR = TC.
  5. Profit Area = TR > TC (right of BEP).
  6. Loss Area = TR < TC (left of BEP).

5. Example Calculation

Scenario:

  • Fixed Costs (FC) = $10,000
  • Variable Cost per unit (VC) = $5
  • Selling Price per unit (SP) = $15

Breakeven Point (Units)

$$ BEP = \frac{10,000}{15 - 5} = 1,000\ units $$

Breakeven Revenue

$$ BEP\ (\$) = 1,000 \times 15 = \$15,000 $$

Profit if 1,500 Units Sold

$$ Profit = (15 - 5) \times 1,500 - 10,000 = \$5,000 $$

6. Impact of Changing Costs & Prices

Change Effect on Breakeven
↑ Fixed Costs BEP increases (more units needed to cover costs)
↑ Variable Costs BEP increases (profit per unit decreases)
↑ Selling Price BEP decreases (each unit contributes more profit)

7. Practical Applications

  • Pricing Strategy: Adjust \(SP\) to lower BEP.
  • Cost Control: Reduce \(FC\) or \(VC\) to improve profitability.
  • Profit Targets: Calculate required sales volume for desired profit.

Target Profit Formula

$$ Q = \frac{FC + Target\ Profit}{SP - VC} $$

Conclusion

  • Fixed Costs remain constant; Variable Costs change with production.
  • Breakeven Point (BEP) is where revenue covers all costs.
  • Profit = Revenue – Total Costs.
  • Graphs help visualize the relationship between costs, volume, and profit.

Would you like a real-world case study or an Excel template for calculations? Let me know!