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[U.S. Import Customs Clearance] CBP Form 301 – Instructions for Completing the Customs Bond
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Time of issue:
2025-09-26 17:50
Customs bonds are applicable to specific types of CBP transactions, and the bond conditions vary depending on the type of activity the bond covers.

CBP Form 301 – Customs Bond
Broker Filer Code
Customs Broker Identification Code. Provide a number used to identify the bond filer, which could be a Customs broker, a Surety agent, or any other party authorized to file the bond.
Surety Reference Number
Guarantor Reference Number. The guarantor may choose to submit a 9-digit, self-generated Guarantor Reference Number to CBP as an alternative to the Social Security Number (SSN) for use as the Bond Control Number.
Execution Date
Effective Date: The date on which the Surety or Bond Principal last signs the Bond.
For Continuous Bonds: Must be on or before the Effective Date.
For Single Transaction Bonds: The date must be the same as or earlier than the transaction date.
SECTION I
Choose either the Single Transaction Bond or the Continuous Bond based on the situation—both cannot be selected simultaneously.
Identification of the transaction secured by this bond (e.g., entry number, seizure number, etc.)
Transaction identification information covered by this Bond guarantee (e.g., Entry number, Seizure number, etc.).
Applies only to Single Transaction. If you're applying for a Continuous Bond, you don't need to fill out this box.
If the Single Transaction Bond covers Activity Code 1 or 1a, please provide the Entry number.
If the Single Transaction Bond covers Activity Code 10, provide the Seizure number.
If the Single Transaction Bond covers Activity Code 16, a unique ISF transaction number will be provided.
If the Single Transaction Bond covers Activity Codes 1 and 16 (Unified Filing), provide the Entry number and the unique ISF transaction number.
For any other activity codes that allow Single Transaction Bond declarations, an identifying number can be provided.
Transaction Date
Transaction date: If it’s a single transaction bond, provide the date on which the transaction occurred (if known).
Single-Transaction Bond: Required Field
- Activity Codes 1, 1a, 3, 5, 6, 7, 8, 9, 10:
If known, please fill in the transaction date; if unknown, the transaction due date will be the execution date.
- Activity Code 16:
Fill in the ISF filing date
Continuous Bond: Not applicable, leave blank
Port Code
Port code: Enter the 4-digit code for the port where the Single transaction occurred. Leave this field blank for Continuous bonds.
Effective Date
Effective Date. Applicable only to Continuous Bonds. Indicates the date on which CBP begins accepting Continuous Bond transactions. The Effective Date must be the same as, or later than, the Execution Date.
SECTION II
Activity Code
Select the corresponding activity code—only one can be chosen, though 3a can be selected individually or together with 3. The declarant has the option to cross out any unused activity codes.
Limit of Liability
Liability limit: Enter the Bond amount next to the selected activity code. The amount must be a whole dollar amount (if the Single Transaction Bond amount includes cents, round up to the nearest dollar).
In all other liability limit areas, enter "N/A" (optional) next to the underlined activity code.
PRINCIPAL
Name and Physical Address (including legal description and state of incorporation)
Name and actual address (including legal description and company registration location). Provide the full name and legal description of the Bond Principal (e.g., Corporation, Partnership, Individual), the actual address (not a P.O. Box), and the state where the company is registered, if applicable.
For Continuous Bonds: If it is a Limited Partnership, please provide a copy of the partnership agreement. If it is a General Partnership, please list the partners' names and addresses on the Bond form (e.g., a general partnership consisting of
CBP Identification Number
CBP Identification Number. Provide the CBP identification number submitted in accordance with 19 CFR 24.5.
When using the Internal Revenue Service (IRS) Employer Identification Number (EIN), you must include a two-digit suffix code, resulting in an 11-digit number.
Signature
Signature. Provide the signature of the party authorizing the bond contract to be signed. The name and title (or authorized representative) of the party signing the Bond must also be entered in this box. If an authorized agent is signing the Bond, the company name of the Attorney in Fact must be provided.
SEAL
Seal. The Principal must determine whether a seal is required under the laws of the state where the Bond was executed. Checking the box indicates that the seal has been affixed in accordance with 19 CFR 113.25 or submitted electronically to CBP. If the box remains unchecked, it means a seal is not required.
Mailing Address Requested by the Surety
The guarantor’s requested mailing address. Provide the address where the guarantor can receive the Notice of Service.
SURETY
Name and Physical Address (including legal description and state of incorporation)
Name and physical address (including legal description and company registration location). If applicable, provide the full name and physical address of the guarantor listed in the Treasury Department’s “Treasury Listing of Approved Sureties” (Treasury Circular 570), published in the Federal Register by the U.S. Department of the Treasury. If the guarantor is an individual, please provide their name, legal description, and physical address.
Surety Number
Provide the 3-digit identification code assigned by CBP to the surety company.
Agent ID Number
Please provide the ID number of the guarantor listed on the Power of Attorney. If the guarantor is an individual, you may submit their Social Security Number (SSN), or alternatively, use the CBP-assigned number provided by Customs and Border Protection.
Signature
Signature. Provide the signature of the party authorizing the signing of the Bond contract. The name and position (or authorized representative) of the party signing the Bond contract must also be entered in this box.
SEAL
Seal. The surety must determine whether a seal is required under the laws of the state where the Bond was executed. Checking the box indicates that the seal has been affixed in accordance with 19 CFR 113.25 or submitted electronically to CBP. If the box remains unchecked, it means a seal is not required.
PAGE 2 CBP FORM 301
If the CBP Form 301, Page 2, does not contain substantive information, it is not required to be submitted to CBP (for either Single Transaction or Continuous Bonds). Substantive information applies only to the Co-Principal, Section III Divisions/Users, and the Co-Surety.
This page needs to be completed only if there is a Co-Principal, Section III Divisions/Users, and/or a Co-Surety.
If a second page is required, four header data items must be provided: Broker Filer Code, Surety Reference Number, Principal Name, and CBP Identification Number—matching the fields on Page 1.
SECTION III
Please list the full names of all businesses or non-corporate entities authorized to fulfill Bond obligations on behalf of the principal, including their CBP identification numbers. For each entity listed, provide the complete name (e.g., ABC Company, DBA 123 Company). If the identification number is based on an Employer Identification Number (EIN), it must match the primary number (the first nine digits of the principal’s Bond issuer identification number as shown on the Bond).
Total number of importers listed in Section III: Provide the total count of entities listed. If none are listed, enter 0. The total number of users in Section III does not include the main principal or any co-principals.
If a Bond application has more than 2 co-principals, CBP Form 301A must be used.
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