All goods imported into Singapore, including replacement goods, are subject to Goods and Services Tax (GST) levied at the prevalling rate on the goods' Cost, Insurance and Freight (CIF) value. This is inclusive of all other charges, costs and expenses incidental to the sale and delivery of the goods into Singapore. There is no GST relief for importing replacement goods.

For replacement goods without any value indicated in the invoice, the importer has to obtain the commercial value of the items from the supplier. The declared commercial value of the goods from the supplier should be based on

1. The transaction value of identical or similar goods from the same country of origin that is exported at about the same time, or

2. The original price payable for the goods as if they are sold for export to Singapore.

You may refer to Customs Circular No. 09/2012 on the valuation of goods to be declared for GST purposes.