Stay Compliant. Reduce Landed Cost.
Flat-rate U.S. customs brokerage. 30-minute filing SLA. Transparent pricing — no surcharges.
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Three promises we make to every importer we file for.
Reduce landed cost
Expert-led tariff classification and duty planning. We read every entry like a line item on your P&L — because it is.
Built-in reliability
Customs expertise that keeps you compliant and focused on your business — not sweating border delays.
Transparent pricing
Every import. Every export. One flat rate. No surcharges. Volume pricing for high-frequency shippers.
The math is usually the pitch.
Most brokers quote low, then add. We don't. Compare a year of filings at your actual volume.
See your custom 2026 quote →Getting started is simple.
Book a 30-minute consultation.
We learn your business — what you're shipping, where it's going, and where you're exposed.
We set you up.
Self-service portal for filings, or just email us your documents. Whichever's easier for you.
We handle it from here.
Fast filings. Accurate classifications. Ongoing tariff optimization — all taken care of.
Built for hardware importers where one entry mistake changes margin.
Electronic Components & Connector Distributors
SKU-level HTS audits, Section 301 China cleanup, AD/CVD screening, PSC/protest support, and broker coordination for recurring component entries.
Learn more →Aerospace & Space Precision Components
Material-flow HTS review, Section 232/AD/CVD monitoring, country-of-origin defense, and DFARS-ready customs documentation for AS9100 supply chains.
Learn more →EV Battery & Drivetrain Importers
FEOC/IRA evidence packets, UFLPA screening, lithium-battery escalation, HTS review, and broker routing for battery and drivetrain imports.
Learn more →Robotics & Industrial Automation
Classification and first-import controls for actuators, sensors, robot compute, motors, lithium batteries, frames, chargers, and fast-changing robot BOMs.
Learn more →AI Compute & Datacenter Hardware
Customs-side classification, valuation, first-sale files, Section 301 stack review, and broker coordination for high-value AI infrastructure imports.
Learn more →We built Greenwich Mercantile because importers deserve a broker who reads every entry like it's a line item on their P&L.
Questions, answered directly.
The five we hear most. For anything else, a 30-minute call is usually faster than email.
Greenwich Mercantile offers transparent, flat-rate pricing per import or export. The rate is the same regardless of shipment size, complexity, or number of filings. No surcharges. No hidden fees. For a full industry breakdown of per-entry pricing, section 301 fees, bond fees, and hidden costs, read our complete guide to how much a customs broker costs.
Every filing is guaranteed to be completed within 30 minutes of receiving your documents. That's not an average — it's our service level agreement.
Most brokers file what they're handed. Greenwich Mercantile conducts expert-led tariff classification reviews to identify opportunities to legally reduce your duty spend.
Customs holds typically result from classification errors, missing documentation, or compliance flags. Our process is designed to prevent holds before they happen — and to resolve them the same day if they do.
Yes. We handle setup of importer numbers, continuous bonds, and POA in a single onboarding session. Most new importers file their first entry within a week.
The Greenwich Brief.
Subscribe and we'll send the Free 2026 Tariff Stacking Checklist immediately — then one issue per month for importers who'd rather read it from us than learn it from a CBP form.