====== Which VAT Calculation Schemas Exist in TrawelWise? ======

There are 4 kinds of VAT calculation schemas in TravelWise:

==== I. Full amount included ==== 
VAT is already included in the Sell price.

__Calculation formula:__ 
**Sell price – Sell price/(1+VAT%/100)**
OR
**Sell price*VAT%/(100+VAT%)**


==== II. Full amount added ====
VAT increases the Sell price, as becomes added to it separately.

__Calculation formula:__ **Sell price*(VAT%/100)**

==== III. Margin included ====
VAT is already included in the Sell price.

__Calculation formula:__ **Profit (i. e. commission)*VAT%/(100+VAT%)**


==== IV. Margin added ====
VAT increases the Sell price, as becomes added to it separately.

__Calculation formula:__ **VAT%/100*Expense price**


==== EXAMPLES ====
(correspondingly to the above mentioned schemas):

**Common conditions:
Sell price = 200,
Expense = 100,
VAT 25%**

**1. 
Full amount //included// = Sell price – Sell price/(1+VAT%/100) = 200-200/(1+25/100) = 200-160 = 40
OR 
Full amount //included// = Sell price*VAT%/(100+VAT%) = 200*25/(100+25) = 200*0,2 = 40**

Sell Price w/o VAT = 200-40 = 160


**2.
Full amount //added// = Sell price*(VAT%/100) = 200*(25/100) = 50**

Sell Price with VAT = Sell price + VAT amount = 200 + 50 = 250
Sell Price w/o VAT = 200

**3.
Margin //included// = Profit*VAT%/(100+VAT%) = (Sell price-Expense price) *VAT%/(100+VAT%)  = (200-100)*25/(100+25) = 20**

Profit = 100
VAT = 20
Sell Price w/o VAT = 200-20 = 180

**4.
Margin //added// = VAT%/100*Expense price = 25/100*100 = 25**

Sell Price with VAT = 200+25 = 225
Sell Price w/o VAT = 200
Profit = Sell w/o VAT – Expense price = 200-100 = 100