Goods you buy online often include foreign VAT. The rules in the country of purchase determine whether you may have this reimbursed.
The rules on VAT on purchases from online stores may vary depending on what country the store is situated in, also within the EU. Some stores are permitted to sell without VAT when goods are shipped directly to countries outside the EU. You must check with the online store what applies to them.
When you import the goods to Norway, Norwegian VAT is calculated based on the entire purchase price. This means that if you have paid VAT in the country of origin, this amount must be included in the calculation of Norwegian VAT.
There are usually arrangements abroad that provide the opportunity to have foreign VAT reimbursed in arrears. If foreign VAT is refunded, you may apply to Norwegian Customs to correct the declared value of the goods. Subjects that are not registered for VAT in Norway may (at the same time) change the calculation of the Norwegian VAT, and apply to have Norwegian VAT on this amount reimbursed.
Amounts below NOK 100 are non-refundable.