Accompanied purchases and shipped orders require separate checks. An eligible returning resident may generally use an $800 personal exemption, subject to the applicable conditions and the total purchases brought home.
CBP describes conditions including a qualifying stay abroad of at least 48 hours and use of the exemption no more frequently than every 31 days. Exceptions exist, so confirm eligibility rather than assuming the amount applies automatically. (help.cbp.gov)
Before departure:
- Retain the itemized invoice and payment record.
- Record the suit's purchase value and any separately purchased garments.
- Include the suit when declaring your overseas purchases.
- Consider other purchases using the same exemption.
- Ask CBP about the assessment if your purchases exceed the available exemption.
Do not confuse the personal travel exemption with the low-value shipment rules. CBP's traveler guidance also discusses declaring foreign alterations to an already-owned suit, illustrating why “it is clothing for my own use” is not a complete customs analysis. (cbp.gov)
If the tailor will ship the suit after you leave, have the shipment assessed under the appropriate shipping procedure. Do not simply transfer your accompanied-baggage assumption to the parcel.