THE BLOCK CUSTOMS BROKERS, LLC

The Block Customs Brokers, LLC is a CBP-licensed customs brokerage firm headquartered in Naperville, Illinois, a western suburb of Chicago. Operating under filer code NFX, the company is positioned to serve commercial importers throughout the Midwest who need reliable, knowledgeable customs clearance support.

Naperville's proximity to Chicago O'Hare International Airport — one of the busiest air cargo hubs in North America — makes it a practical base for customs brokers handling time-sensitive air freight shipments. Importers routing goods through O'Hare, or transporting cargo inland from ports such as Los Angeles, Long Beach, or East Coast gateways, will find a Naperville-based broker well-suited to coordinate the final stages of customs release and delivery into the Midwest.

For importers new to the process, working with a licensed broker simplifies several critical compliance steps. The Block Customs Brokers, LLC can assist with Importer Security Filing (ISF), commonly called the ISF 10+2 filing, which must be submitted at least 24 hours before cargo is loaded at the foreign port for ocean shipments. Failure to file on time can result in CBP penalties, making accurate and timely ISF filing a top priority. The firm also assists with customs entry preparation, ensuring that commercial invoices, packing lists, and other documentation are correctly submitted to CBP.

Import bond requirements are another area where a licensed customs broker adds value. Most commercial importers are required to have a continuous customs bond on file with CBP, and understanding bond thresholds and renewal requirements is part of operating a compliant import program. The Block Customs Brokers, LLC can guide importers through bond setup and maintenance.

For businesses that may qualify for cost recovery programs, the firm can advise on duty drawback eligibility. Duty drawback allows importers to recover duties paid on goods that are subsequently exported or destroyed, and navigating the rules around unused merchandise drawback or manufacturing drawback requires careful documentation. Importers searching for a duty drawback broker should inquire whether the firm supports these filings.

HTS code classification is foundational to every import transaction — the HTS code determines the applicable duty rate and any partner government agency requirements. Accurate tariff classification helps avoid delays, penalties, or unexpected duty assessments. The Block Customs Brokers, LLC assists clients in identifying the correct classification for their products.

Whether you are searching for a customs broker near me in the Chicago suburbs, navigating your first commercial import, or managing a recurring program across multiple lanes, The Block Customs Brokers, LLC offers licensed brokerage expertise grounded in the Naperville and greater Chicagoland market.