There are six methods for calculating the value of imported goods to assess the amount of Customs Duty and import VAT a business to pay. The same value is also used for trade statistics.
All six methods are outlined below and should be tried in order. If Method 1 does not apply, try Method 2. If that does not apply, try 3 and so on. However, Method 5 can be tried before 4.
Source: marcusward.co