Sources & methodology

Where the rules come from

We start with official customs and government publications (for example HMRC, U.S. CBP, ZATCA, Dubai Customs, CBIC India, FBR Pakistan, Singapore Customs and the EU's Your Europe portal). Where an official page is not available, we use reliable secondary sources and label them Reported.

Labels

• Official: value read from a government source, with a link.
• Reported: value from a reliable secondary source, waiting for official confirmation.
• Estimated: our estimate when no published value was found.

Daily checks

An automated check runs every 24 hours. It re-reads every source page, flags any change in numbers, and refreshes gold rates (international market rate and official customs valuation rates such as India's tariff value). The United States and China are checked first.

Gold valuation

Gold is valued as weight × purity (karat/24) × rate per gram of 24K gold. Where the destination publishes an official customs rate, we use it; otherwise we use the day's international market rate.

Exchange rates

Amounts are converted with approximate daily reference rates. Customs uses its own official exchange rate on the day you arrive.

Corrections

Found an error? Tell us with a link to the official source.