Breakeven Revision Notes
Breakeven Revision Notes
A business will use breakeven to work out what volume of sales it needs to cover the
production costs.
The contribution tells us how much each product made contributes towards the fixed
costs. We work out the contribution of a product by using the following formula:
contribution = selling price – variable costs per unit
For example, if a book sells for £12 and the variable cost for each book was £7, the contribution would be £5, this is £5 towards the fixed costs. If the fixed costs of the business were £30,000 then we would know that 6,000 books needed to be sold in order
to break even.
The margin of safety of a product shows us the difference between the estimated breakeven sales production and number of planned sales (or maximum sales value). Using the same example of the book, if the business reckons they are able to sell 7,500 units, and the breakeven sales production was 6,000 – the margin of safety would have been 1,500. This means that the business would be able to sell 1,500 products less than they had planned before being in danger of making a loss.
Calculating Breakeven
There are a number of ways to do this. We can use a table, graph or a formula.
If we want to use the graph, we need first to do the table. Take this business as an example:
To draw up the table, we need the following columns:
|No of Units |Variable Costs |Fixed Costs |Total Costs |Sales Revenue |
| | | | | |
To fill in the table, we pick a sensible range of data, as shown in the next table:
- Multiply the number of units by the variable cost per unit to calculate the variable costs for each row
- Leave the fixed costs as they are, as they do not change with output
- Multiply the number of units by the selling price to calculate sales revenue
- Add together the fixed costs and variable costs to calculate total costs
- To calculate the profit/loss, take total costs away from sales revenue
|No of Units |Variable Costs |Fixed Costs |Total Costs |Sales Revenue |
|0 |£0 |£200,000 |£200,000 |£0 |
|100,000 |£30,000 |£200,000 |£230,000 |£85,000 |
|200,000 |£60,000 |£200,000 |£260,000 |£170,000 |
|300,000 |£90,000 |£200,000 |£290,000 |£255,000 |
|400,000 |£120,000 |£200,000 |£320,000 |£340,000 |
|500,000 |£150,000 |£200,000 |£350,000 |£425,000 |
|600,000 |£180,000 |£200,000 |£380,000 |£510,000 |
Now we come to drawing the graph:
Step 1: Draw the axis. Money (£) always goes up the y axis, and units along the x axis
Step 2: Plot the fixed costs. In this case £200,000
Step 3: Now we plot the points for the total costs and join them up
Note: At this point check you have your values right, and assure that the total costs begin at 0 units at the base rate of the fixed costs
Step 4: Plot the points for revenue and connect them. These points should begin at £0
Step 5: Find the point where the two lines (sales revenue and total costs) meet
Step 6: Draw a line to each axis to show the break-even point and break even sales
production
- The breakeven point shows us the point where the two values – the total costs and the sales revenue income – are equal
- The breakeven sales production shows us this also, but gives us the exact number of units estimated to be the breakeven production point. This is not entirely accurate, as it is just an estimate, but we can compare it to the value we arrive at when calculating breakeven using the formula…
If you want to use a formula to work out the breakeven of a product, we use this:
…when:
contribution = selling price per unit – variable costs per unit
So using the newspaper example, the contribution will be the selling price minus the variable costs: 85p – 30p = 55p. We now know that each unit sold contributes 55p towards the fixed costs.
The fixed costs are £200,000. If we divide 55p by this amount (200,000 ÷ 0.55) we arrive at 363636, which we can round to about 365000. Comparing our value of 365,000 to the value from the graph which appears to be about 375,000 – we can see that they are not too far apart.
The Dangers of Breakeven
Breakeven is not entirely accurate and is not as useful as it may sometimes seem. The main limitations of breakeven charts are:
- They do not take into account possible changes in costs over the time period, e.g. economies of scale or increase in production costs/materials
- They do not allow for changes in the selling price, e.g. they would not take note of price reductions and special offers
- The analysis of the breakeven is only as good as the quality of the information
- They do not allow for changes in the market effects, e.g. if a new competitor to the business is introduced to the market in the time period
-----------------------
The Daily Waffle is a newspaper.
• Each newspaper is sold for 85p
• The variable costs per newspaper is 30p
• The fixed costs are £200,000
units
£
100,000
200,000
300,000
400,000
500,000
100,000
200,000
300,000
400,000
500,000
600,000
0
0
fixed costs
fixed costs
0
0
600,000
500,000
400,000
300,000
200,000
100,000
500,000
400,000
300,000
200,000
100,000
£
units
total costs
total costs
fixed costs
0
0
600,000
500,000
400,000
300,000
200,000
100,000
500,000
400,000
300,000
200,000
100,000
£
units
sales revenue
sales revenue
total costs
fixed costs
0
0
600,000
500,000
400,000
300,000
200,000
100,000
500,000
400,000
300,000
200,000
100,000
£
units
break-even point
break-even sales production
breakeven =
fixed costs
contribution
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