売価 = 原価 (仕入値) + 利益
I mean, sounds obvious.
Equations
- 原価率 = 原価 / 売価
- 利益率 = 利益 / 売価
- 原価率 + 利益率 = 1 (100%)
- this last one is particularly important
- if you know one, you can immediately derive the other
- meaning you can reverse the calculation
- meaning these will be in the exams
- 売価 x 原価率 = 原価
- 売価 x 利益率 = 利益
- 原価 / 原価率 = 売価
- 利益 / 利益率 = 売価
Terminology
- 純売上高 = Net (gross revenue - cost)
- 売上総利益 = Gross
Example question
| ケース | 売価 | 原価 | 利益 | 原価率 | 利益率 |
|---|---|---|---|---|---|
| 1 | 500 | 100 | |||
| 2 | 600 | 360 | |||
| 3 | 400 | 90% | |||
| 4 | 240 | 70% |
Fill in the blanks.
利益加算率 / Markup percentage
利益加算率 = 利益 / 原価
The term 利益加算率 doesn’t actually appear in the exams. They call it 売価の原価のn%増し.
While 原価率 and 利益率 treat 売価 as the base (x% of 売価), 利益加算率 treats 原価 as the base (x% of 原価). This aren’t terms to memorise, but are concepts that once has to fully grok.
More examples
Constant
売上高 = 10,000The three way relationship between 売上高、原価(率) and 利益(率).
原価率 80% = 売上高 * 80% = 原価 is 8,000
and
利益率 20% = 売上高 * 20% = 利益 is 2,000
or, since we already know that 原価率 is 80% and that 原価率 + 利益率 = 100%
another way to calculate the 利益 is using simple subtraction
利益 = 売上高 - 原価 = 2,000For questions about deriving the 売上原価.
売価は原価の25%増し
This phrasing is a bit confusingon first look, but break it down and it means the 売価 is 原価 +(増し) 25%.
Visually, it looks like this
------------------------------------
|
| 利益 25%
売価 10,000 (125%) |________________
|
| 原価 100%
|
-------------------------------------
Therefore
売上原価 = 10,000 / (1 + 0.25) = 8,000
売上総利益 = 10,000 * (0.25 / 1.25) = 2,000
or simpler
売上総利益 = 10,000 - 8,000 = 2,000
Calculating 原価率 / cost ratio and the sales cycle
The 原価率 is different depending on which part of the sales cycle we’re in.
Until now, we’ve calculated based on values before a sale.
But what happens when there’s a 売上戻り / return or 売上値引 / discount?
仕入値引 and 仕入戻し do not affect the 原価率 as those occur before a sale.
In cases of a 売上戻り, simply subtract the total sales revenue. The sale is considered to not have happened so the cost ratio has not changed.
Reality is different because of things like shipping, wages, rent, but those are separate items, ie. expenses. Cost stays the same but expenses go up. But that’s not relevant in the book keeping world.
売上値引 however, will affect the cost ratio. During such an event, these are the order or events
- 原価率 is determined
- sale is made
- 原価率 stays the same
- 売上 is booked
- 売上値引 is booked
- 売上 is substracted
- 原価率 is recalculated
Example in table format
売上高 = 1,000
売上戻り = 200
売上値引 = 100
原価率 = 80%
売上値引 売上戻り
--------------------------------------
利益 | 売上総利益 60 | 100 | 40
| |
原価 | 売上原価 640 | 160
| |
--------------------------------------
売価 700 100 200- 売上原価 / sales price = 700 + 100 = 800
- in cases of 売上戻り / returns, the sale is considered to never have happened
- 総利益 / gross = (700 + 100) * 20%(利益率) - 100(値引) = 160 - 100 = 60
Notes
It’s really just a whole bunch of math. Do the course work!