Shipping from Mexico to the U.S.: customs checklist
For an international shipment, the label moves the parcel while documentation explains what is crossing. Vague descriptions and inconsistent values cause delays.
Updated: 2026-08-01
Key takeaways
- Describe each product by material, function and quantity.
- Keep value consistent across the order, invoice and declaration.
- Identify origin, classification and product restrictions.
- Clarify who pays duties and import charges.
Minimum data before quoting
- Complete shipper and recipient, including phone and email.
- Specific description for every product.
- Quantity, unit value, currency and total value.
- Country of origin of the goods.
- Weight and dimensions of the finished parcel.
- Purpose: sale, sample, return or another reason.
A description customs can understand
“Accessories,” “sample” or “merchandise” says very little. A useful description states what the item is, its material and purpose—for example, “adult cotton T-shirt” instead of “clothing.”
Do not reduce declared value to lower taxes. Inconsistencies may trigger holds, corrections, penalties or rejection.
Classification and restrictions
The tariff code informs treatment and duties, but selecting it requires product knowledge. If goods are regulated, perishable, chemical, medical, food-related or contain batteries, validate requirements before creating a label.
Helixium can orchestrate transport, while the shipper remains responsible for truthful declarations and permits when applicable.
Total cost and expectations
- Separate transport from duties, taxes and customs fees.
- Define whether shipper or recipient pays when the service supports that choice.
- Do not present transit time as a guarantee of customs release.
- Keep the commercial invoice, proof and submitted description.
- Allow time for review or information requests.
Frequently asked questions
- Does every shipment pay duties?
- It depends on value, commodity, origin, entry type and current rules. Keep transport pricing separate from customs estimates.
- Will the carrier correct my commercial invoice?
- It may request information, but the shipper is responsible for complete and truthful data.