General

1. Item (HS selection) — Required
   Choose the commodity from the Item dropdown. This links your entry to the correct HS code/description.
2. Invoice Value — Required
   Enter the goods’ value. Decimals are allowed (e.g., 1234.56).
3. Quantity — Optional
   Positive whole number, minimum 1).
4. Currency — Required
   Pick the transaction currency. Totals/labels reflect this choice.
5. Shipping — Optional
   Add freight cost if applicable. The “Invoice Value + Shipping” line updates accordingly.
6. Insurance — Optional
   Provide an insurance amount only when using Manual Calculation.
7. Calculation Method
   
   • Auto-Calculation (default): Insurance (and related fields) are computed automatically by the system logic when available.
   • Manual Calculation: You control the insurance amount—enter it in the Insurance field.
8. Calculate button — runs the CIF calculation and updates the results on screen.
9. Clear button — resets all fields back to defaults (including dropdowns) and clears the subtotals/labels.

Tips: Use digits and a period for amounts (e.g., 2500.00). If an input shows a browser validation message, fix that field and try again.